Welding Lens Color Chart: Shades, Colors & Safety Guide

A shop hand once struck an arc at 180 amps through a lens he’d grabbed from the wrong drawer — within hours his eyes felt full of sand, and by morning he couldn’t look at the shop lights without wincing. That gritty, burning sensation is photokeratitis, and it almost always traces back to one preventable mistake: picking a lens shade by feel instead of by the chart.

What a Welding Lens Color Chart Really Tells You

A shop hand once struck an arc at 180 amps through a lens he’d grabbed from the wrong drawer. Within hours his eyes felt full of sand, and by morning he couldn’t look at the shop lights without wincing. That gritty, burning sensation is photokeratitis, and it almost always traces back to one preventable mistake: picking a lens shade by feel instead of by the chart.

The fix is simpler than it sounds. Every welding helmet, cover plate, and pair of filter goggles you have ever used belongs to a numbering system, and one reference document tells you which number belongs on which job. That document is the welding lens color chart, sometimes called a shade chart.

So what exactly does a welding lens color chart do?

At its core, it is a lookup table. Two inputs — what process are you running and how much current or material thickness you are working with — give one output: the minimum filter shade you are allowed to look through. Run 60 amps of TIG on thin stainless and the chart points you to a lighter shade. Strike a 300-amp stick bead on ½-inch plate and the same chart pushes you several shades darker.

The “color” in the name is a historical hangover. Older charts were printed next to swatches of the green glass they recommended, so people started calling the whole table a color chart. Hold onto this distinction now: shade is the safety rating, color is the look. A shade 10 lens can be green, gray, gold, or blue-tinted and still be a shade 10. We’ll untangle color versus shade properly in a later section.

What shade do I need? The short answer

Filter lenses are numbered roughly from 3 (lightest) to 14 (darkest), defined under ANSI Z87.1 and referenced by AWS Z49.1. As a practical starting point:

• Shades 3–6 — torch work: oxyfuel cutting, brazing, gas welding on light stock.
• Shades 7–9 — plasma cutting and lighter-duty arc work.
• Shades 10–13 — the everyday welding band for MIG, TIG, and stick across most amperage ranges.
• Shade 14 — the top of the scale, reserved for high-current work and air carbon arc gouging.

The chart’s rule of thumb is worth memorizing: start with a shade too dark to see the weld zone, then step lighter until the weld zone is clearly visible — without ever going below the listed minimum. More on that method in the step-by-step section later.

Why the chart exists at all

A welding arc isn’t just bright. It is a compact radiator pumping out ultraviolet, infrared, and visible energy at once. OSHA’s eye protection fact sheet documents that this arc radiation can injure the cornea — photokeratitis, commonly called arc eye or “welder’s flash” — and contribute to long-term lens damage with repeated exposure (OSHA eye protection fact sheet). Your cornea has no pain receptors of its own, so the burn shows up hours later, which is exactly why the shop hand in the story felt fine at first.

Because of that hazard, eye and face protection from radiant energy isn’t advisory. It’s enforced: 29 CFR 1926.102 covers construction work and 29 CFR 1910.133 covers general industry. The chart is simply how a worker translates those rules into the right piece of glass.

Who this guide is for, and the terms you’ll need

This guide is written for shop welders, apprentices, students in a Aluminium Welding Course, cutting-table operators, fabrication helpers, and anyone who supervises hot work. You don’t need optics training — you need five terms:

• Shade number — the density rating of a filter, from 3 to 14.
• Filter lens — the dark plate or cartridge that sits between your eyes and the arc.
• ADF — auto-darkening filter, the liquid-crystal cartridge in modern helmets.
• Light state — the ADF’s resting, clear condition before an arc is detected (commonly shade 3 or 4).
• Dark state — the shade the ADF switches to when the sensors fire (commonly 9–13).

Over the next sections we’ll dig into how shade numbers translate into light transmission, print the full process-and-amperage tables for stick, MIG, TIG, plasma, oxyfuel, and brazing, compare OSHA’s legal minimums against ANSI/AWS recommendations, clear up the green-versus-gray-versus-blue color question, match the chart to passive and auto-darkening helmets, and finish with a repeatable method for picking your shade every single time — including the mistakes that send people to the eye doctor.

If you weld aluminum, note that process choice changes your amperage habits: an Aluminum MIG Welding setup on thin material sits at the lighter end of the stick, while an Aluminum Flux Core Welding job runs hotter and asks for more shade. Same arc family, different line on the chart.

How Shade Numbers Work: Light Transmission, UV, and IR

Before you can trust the welding lens color chart, you need to know what a shade number actually is. It is not a brightness dial and it is not a color code. A shade number is an optical density step: it describes how much visible light a filter lets through, on a logarithmic scale. That last detail changes how you read every chart.

Shade Numbers Are Density Steps, Not Linear Settings

Because the scale is logarithmic, each step up cuts transmitted visible light by roughly a factor of ten. Moving from shade 10 to shade 11 does not make the lens 10 percent darker; it passes about one-tenth as much light. That is why the scale runs only from shade 3 to shade 14 and still covers everything from torch brazing to high-amperage stick. A small number change is a large jump in protection.

Older references and some lens markings use density notation instead, written as decimals, such as a “density 10.0” lens. Density and shade numbers describe the same property, so a density 10 lens is the shade 10 you find on a modern chart. If you inherited a box of lenses stamped with decimals, they map straight onto the shade column.

UV and IR: The Protection That Never Changes

The arc produces three kinds of radiant energy: visible light, ultraviolet (UV), and infrared (IR). Visible light is what overwhelms your eyes and causes the glare you are trying to manage. UV and IR are the invisible hazards. UV causes photokeratitis — the “arc flash” sunburn on your cornea — and long-term exposure is linked to cataracts and retinal damage. Infrared adds deep thermal load to the eye.

Here is the critical insight most welders learn the hard way: a quality welding filter blocks essentially all UV and IR regardless of its visible shade number. A shade 10 lens and a shade 13 lens are both rated to hold UV and IR transmission below the limits set by OSHA 29 CFR 1926.102 and the transmittance requirements in the ANSI Z87.1 device standard. The shade number only governs visible light. A darker lens adds no UV or IR protection; it only makes the puddle harder to see.

Absorptive Glass vs. Auto-Darkening Filters

Two technologies deliver that protection, and they work very differently.

• Absorptive glass filters are the traditional fixed-shade plates. Metallic oxides — iron, manganese, cobalt — are baked into the glass, which is what gives the lens its green tint. The chemistry absorbs visible light and blocks UV and IR. The shade is permanent; to change it, you change the plate.
• Auto-darkening filters (ADFs) use liquid crystal cells sandwiched between polarizers, driven by light sensors and a small circuit. When the sensors detect the arc, the crystals realign in a fraction of a millisecond and the visible transmission drops to the selected dark state.

The safety advantage is that ADFs carry constant UV/IR protection in both the light state and the dark state. The lens always filters UV and IR at its maximum rating; the sensors only modulate visible light. That is why a shade 9 to 13 ADF helmet set to shade 10 satisfies the same chart entry as a passive shade 10 plate. An ADF set too light on the visible shade still violates the shade chart, even though the helmet itself is fully compliant hardware.

Choosing the Shade You Can Actually Use

Practical shade selection has two variables: the chart minimum for your process and amperage, and your own visual acuity under that filter. Start at the chart minimum, confirm you can read the puddle and the joint edges, and go darker only if glare forces it. Personal factors shift the same point. Age reduces the eye’s natural light transmission, so an older welder may legitimately need a slightly lighter shade to read the same puddle. Eye conditions, ambient shop lighting, and welding overhead all move the line where “dark enough” tips into “too dark.” Welders running aluminum, where the puddle is bright but low-contrast, often find standard stick-welding shades too dark to read the wet edge; the shade notes in our Aluminum MIG Welding: The Complete Practical Guide walk through that trade-off.

Once you grasp that shade equals visible density and that UV and IR protection is a separate, constant property, the rest of the chart becomes simple bookkeeping. The next section delivers the full process-by-process tables so you can look up exactly where your work falls.

The Complete Welding Lens Shade Chart by Process and Amperage

This is the part people photograph with a phone and tape inside a toolbox lid. Two data points drive every row: the process you are running and the current you are running it at (for flame work, material thickness replaces amperage). The first column of each table mirrors OSHA Table E-1 in 29 CFR 1926.102, the enforceable construction minimum. The second column shows what ANSI/AWS Z49.1, Safety in Welding, Cutting and Allied Processes recommends — the consensus best practice most shops adopt as their internal rule. Read the amperage off the machine, not out of your memory.

Stick Welding (SMAW) Shade Chart

Welding current	OSHA minimum shade	ANSI/AWS recommended shade
Under 60 A	7	10*
60–160 A	8	10
160–250 A	10	12
Over 250 A (to 550 A)	11	14

OSHA publishes a second stick table for welders using a thick (roughly 1/8 in) filter plate, keyed to electrode diameter instead of current:

Electrode diameter	Required shade
3/32 in	10
1/8 in	10
5/32 in	10
3/16 in	12
7/32 in	12
1/4 in	14
5/16 in	14

Note: ANSI/AWS Z49.1 begins its arc-welding recommendations at 60 A. Below that, shops default to the standard’s lowest practical arc value — typically shade 10 — or to a written employer rule. Shade 10 is the safe floor for stick either way, because a 40 A stick arc still produces intense ultraviolet. For process selection and rod behavior, see our Advantages of Stick Welding: Why SMAW Still Wins guide.

MIG (GMAW) and Flux Core (FCAW) Shade Chart

Welding current	OSHA minimum shade	ANSI/AWS recommended shade
Under 60 A	7	10*
60–160 A	10	11
160–250 A	10	12
250–500 A	10	14
Over 500 A	12	14

GMAW and FCAW share the same OSHA band of 10 from 60 to 500 A, which surprises welders who assume wire processes are gentler than stick. They are quieter, not dimmer. Short-circuit transfer on thin sheet runs cool in amps but still throws full ultraviolet, so reaching for a shade 8 because “it’s only 45 amps” is a chart violation. Aluminum makes it worse: the arc’s UV output climbs sharply on aluminum, which is why Aluminum MIG Welding: The Complete Practical Guide and Aluminum Flux Core Welding: What Actually Works in 2026 both tell operators to stay at the darker end of the range.

TIG (GTAW) Shade Chart

Welding current	OSHA minimum shade	ANSI/AWS recommended shade
Under 50 A	8	10
50–150 A	8	12
150–500 A	10	14

TIG is the trap for shade-shoppers. The arc is clean, the smoke is minimal, it looks tame — but a bare tungsten arc has no flux or fume blanket to soften it, and its ultraviolet output is high for its apparent brightness. Stainless and aluminum TIG work is a classic source of “I only did a few tack welds” arc flash. It also shows the widest gap between OSHA (8) and ANSI/AWS (10–12) of any process here.

Plasma Arc Welding, Plasma Cutting, and Air Carbon Arc

Process and condition	OSHA minimum shade	Recommended shade
Plasma arc welding, under 30 A	6	8
Plasma arc welding, 30–60 A	8	8
Plasma arc welding, 60–150 A	9	8–10
Plasma cutting, under 300 A	8	10
Plasma cutting, 300–400 A	9	12
Plasma cutting, 400–800 A	10	14
Air carbon arc gouging, under 500 A	4	5
Air carbon arc gouging, 500–1000 A	5	6

Cutting shades climb with machine current rather than travel speed. Gouging reads lighter than it deserves because the air jet scatters the arc, but the glare off the puddle is still brutal. Our Air Arc Welding and Carbon Arc Gouging walkthrough covers electrode sizing, compressed-air setup, and the ear and face protection that pairs with these shades.

Oxyfuel Welding, Oxygen Cutting, and Torch Brazing

Task	Material or plate thickness	Shade
Oxyfuel gas welding	Under 1/8 in	4–5 (OSHA min 3–4)
Oxyfuel gas welding	1/8–1/2 in	4–5
Oxyfuel gas welding	Over 1/2 in	5–6
Oxygen cutting	Under 1 in	3–4
Oxygen cutting	1–6 in	4–5
Oxygen cutting	Over 6 in	5–6
Torch brazing	Any	3–4
Torch soldering	Any	2

Flame work needs far less density because a fuel flame produces no ultraviolet to speak of — the hazard is brightness plus the sodium flare off flux, which is why these glasses are usually straw or green tinted rather than gray. OSHA’s eye protection fact sheet still requires them: the flame, the hot metal, and the spatter are each their own hazard.

One habit worth building: these values shift with amperage, so re-check the chart every time you change process, wire size, or machine setting. As AWS’s shade chart and eye protection guide puts it, the chart is a lookup tool, not a one-time decision — and a helmet whose dial covers shade 9 to 13 will cover nearly every row in these tables at once.

OSHA vs. ANSI vs. AWS: Which Shade Table Should You Follow?

More than one shade chart exists, and they don’t always agree. The numbers on your shop wall poster, in your helmet booklet, and on the card a compliance officer carries can differ by a shade or two. None of them is wrong. Three organizations wrote them for three different purposes, and sorting out who did what ends the guessing game.

OSHA: The Legal Floor

OSHA publishes the numbers with legal weight. Construction work falls under 29 CFR 1926.102, whose Table E-1 lists minimum filter shades for welding, cutting, brazing, and soldering. Section 1926.102(b)(2) is blunt: filter lenses or plates must protect workers from the radiant energy those processes produce. General industry has a companion rule, 29 CFR 1910.133, requiring a shade appropriate to the work being performed.

Two details in that table get overlooked constantly:

• Darker is always allowed. Table E-1 explicitly permits shades more dense than those listed to suit the individual’s needs. Shade 12 on a job with a shade 10 minimum is not a violation. Shade 9 on that same job is.
• Helpers get their own number. The tables cover people standing near the arc, not just the person holding the stinger. For a helper near stick welding, OSHA lists a lighter but still protective shade, commonly shade 8. Fire watchers and nearby grinders need rated protection too, not bare eyes and a squint.

OSHA’s own eye protection fact sheet repeats the same logic: match the filter to the hazard, and never substitute a lighter lens for comfort.

ANSI Z49.1 and AWS: The Recommended Ranges

ANSI doesn’t write welding standards in a vacuum. ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes, is developed under American Welding Society committee structure, and its Table 1 “Guide for Shade Numbers” is drawn from AWS F2.2, the Lens Shade Selector. The AWS-published Z49.1 text is readable online, and AWS keeps current chart material in its Welding Digest shade chart guide.

Where OSHA gives a single minimum, ANSI and AWS typically give a recommended range. A 5/32-inch stick electrode around 150 to 180 amps may overlap both documents, but the AWS range often sits one shade darker for the same process. Safety-conscious employers resolve the gap by adopting the darker ANSI value as internal policy. It satisfies OSHA by definition and leaves margin for long shifts, reflective booths, and the eye fatigue that accumulates over eight hours under a hood.

ANSI Z87.1: The Device Standard

This is the distinction that trips people up. Z49.1 tells you which shade to use. ANSI Z87.1 tells you whether the helmet, filter plate, or safety spectacle is built well enough to trust at all. Z87.1 covers impact resistance, optical quality, and marking requirements, and a compliant helmet carries the Z87+ stamp plus a shade designation on the filter or shell. That is why an unmarked lens is a false economy: it may look dark enough at the counter, but it has never been tested for UV and IR transmission, and no chart can rescue it.

How Compliance Actually Gets Inspected

Inspectors rarely show up with a light meter and a shade card. What they check is process: a written hazard assessment, documented PPE training, legible Z87 markings on gear, and the shade in use against the process running on the floor. If a welder is running 200-amp MIG through a shade 8 lens, the citation writes itself. It is the same shade logic taught in welding programs.

Combined Shades: Eyewear Under a Helmet

Wearing safety glasses under a hood is smart. Flipping up should not mean unprotected eyes near sparks and grinding dust. What you cannot do is stack lenses and assume the shades add up. Shade numbers are logarithmic, so two shade 5 lenses do not make a shade 10. Select your helmet shade from the process and amperage chart, then treat the under-helmet eyewear as impact and UV protection for hood-up moments, not as part of the shade calculation.

Quick Reference: Who Governs What

Authority	Document	What It Gives You	Legal Weight
OSHA	1926.102 Table E-1; 1910.133	Minimum filter shades by process and amperage	Enforceable law
ANSI / AWS	Z49.1 Table 1 (from AWS F2.2)	Recommended shade ranges	Consensus standard
ANSI	Z87.1	Device performance, impact rating, markings	Certification standard

The takeaway is simpler than the acronyms suggest. Use OSHA as the floor, ANSI Z49.1 as the target, and Z87.1 to confirm the gear on your head is actually rated for the job. The gaps matter most when you switch processes on the same bench, as when air arc welding at high current gives way to a low-amp root pass on thin sheet.

Lens Color vs. Lens Shade: Why the Chart Looks Green, Gray, or Blue

Walk into any welding supply aisle and you will see the same filter plate in four different tints: classic bottle green, smoky gray, warm gold, and a blue-tinted “true color” plate that looks more like a camera filter than a piece of safety glass. Shoppers grab whichever looks clearest and assume the tint is doing the safety work. It is not. Color and shade mean two completely different things, and confusing them is one of the most common reasons people end up with the wrong lens.

Shade Is the Rating, Color Is the View

Shade is the safety number. It is a standardized measure of how much visible light a filter transmits, and it is what the shade chart in this article is built around. Welding filter shades run on a numbered scale, roughly 1.5 for light cutting work up to 14 for the most intense arc processes, and each step up blocks noticeably more light. A shade 10 blocks far more light than a shade 7, regardless of what color the glass happens to be. Regulators only care about that number: under OSHA 29 CFR 1926.102, a lens must deliver at least the minimum shade listed for your process and amperage, and nothing about tint changes that obligation.

Color is the comfort layer. It describes which parts of the visible spectrum the lens passes through, and therefore how the arc, the puddle, and the surrounding plate look to your eye. As HexArmor’s comparison of green and gray tints puts it, tint affects color perception and visibility while shade governs light intensity. You can buy a green shade 10 and a gray shade 10 that block identical amounts of light and still show two very different pictures.

Traditional Green Glass

For most of the 20th century, green was welding. Standard absorptive glass filters, tinted by the metal oxides and flux chemistry in the melt, knock down visible light while also blocking ultraviolet and infrared radiation. They are cheap, durable, and genuinely protective. The trade-off is color distortion: green glass swallows much of the red and orange content of the arc, so the molten puddle and the arc itself can blur into a single glowing mass. Specialty variants such as didymium and gold-filtered glass were developed to notch out specific bright emission lines, which helps on materials like stainless and aluminum where the arc spectrum is harsher.

Gray, Neutral, and True-Color Tints

Gray and neutral-density tints absorb wavelengths more evenly, so the workpiece looks closer to how it looks in normal daylight. You can tell where the heat-affected zone ends, read the edge of the joint, and spot undercut without the whole field going monochrome green. The next step is true-color and blue-filter technology, which expands the visible spectrum and suppresses the yellow-green spike that dominates a standard arc image. The result is sharper separation between the puddle, the arc cone, and the surrounding metal. That matters in auto-darkening helmets too, since the fixed tint behind the liquid crystal stays with you from start to finish of every pass. If you have ever struggled to follow a seam in Aluminum MIG Welding: The Complete Practical Guide, where the puddle is bright and the reflection is deceptive, a neutral or true-color filter makes the difference far easier to read.

Gold, Brown, and Specialty Tints

Gold and brown tints are common in cutting and torch work, where the arc is less intense but the flame and slag spray are constant. They warm the image and reduce the harsh blue cast of plasma and gouging arcs. Grinding shades in the 2 to 3 range often use similar warm tints. None of these replace the shade requirement; they simply shape what you see once the correct shade is chosen.

Lens Color Comparison at a Glance

Lens Color	Pros	Cons
Classic green	Inexpensive, widely available, solid UV/IR block, familiar arc view	Distorts reds and oranges, puddle and arc can blend, more eye strain over long arcs
Gray / neutral	Natural color rendering, easy to see joint edges and HAZ, less distortion	Slightly higher cost, does not filter harsh emission lines as aggressively
True color / blue filter	Widest visible spectrum, best puddle-to-arc separation, precise detail	Premium pricing, needs a good battery or solar cell to stay consistent
Gold / brown	Comfortable warm view for cutting, brazing and grinding, reduces glare	Less accurate color, not ideal for precise arc work

The rule that ties it all together is simple: color is a comfort and clarity choice, shade is the safety rating. Whatever tint you prefer, the lens must still meet or exceed the minimum shade for the process and amperage on the chart. A beautifully clear shade 6 used for 150-amp stick welding is still a violation, and no amount of true-color technology makes it safe. As Paulson Manufacturing’s shade guidance emphasizes, pick the shade first for the exposure, then pick the color for the view.

Passive vs. Auto-Darkening Helmets: Matching the Chart to Your Helmet

The shade chart only protects you if your helmet can deliver the shade it calls for. Two helmet families do that very differently: the passive hood with a fixed filter, and the auto-darkening helmet that switches shade on its own. How each one maps onto the chart decides whether your setup is compliant or just looks it.

Fixed-Shade Passive Helmets

A passive helmet is a shell, a fixed filter plate, and headgear. The filter never changes: it sits at one darkness all shift, most commonly a shade 10 plate, the classic all-purpose choice for stick and MIG in the mid-range of amperage. Some welders keep a small set — a shade 9 for light TIG, an 11 or 12 for heavy stick — and swap as the job changes.

The trade-off is workflow. Because the lens stays dark, you flip the hood up to inspect fit-up or check a root gap, then nod it down to strike the arc. That constant nodding tires over a long day, and the momentary nod-and-strike habit is where many first-time arc flashes happen: if the helmet is still descending when the arc catches, your eyes take the full UV load.

Passive helmets have real advantages: no batteries, no electronics to fail, low cost, and no layer to scratch or delaminate. For a shop running one process all day, a passive hood with the correct plate is fully chart-compliant and hard to beat for reliability. Our advantages of stick welding guide covers the amperage ranges where a fixed shade 10 plate works and where to step up.

Auto-Darkening Helmets (ADF)

An auto-darkening helmet sandwiches a liquid-crystal filter between polarizing layers. In its light state the filter is transparent, typically shade 3 or 4, so you can position the electrode. When the sensors detect the arc, the liquid crystals twist and the filter drops to its dark state, the shade you dialed in. Quality filters make that switch in roughly 1/25,000 to 1/30,000 of a second, fast enough that the first flash never reaches an unprotected retina.

Adjustable-shade models generally cover shades 9–13, where most common welding falls. Broader models run from shade 4 to 13, adding a grinding mode that parks the filter at a light tint so you can grind without lifting the hood. Market listings commonly show an 8–13 range, with shade 13 the darkest common setting, enough for high-current spray-transfer MIG and heavy stick.

Three controls matter when you’re mapping an ADF onto the chart:

• Shade selector — the darkness in dark state; the number you compare against the chart.
• Sensitivity — how easily the sensors trigger. Turn it down in a crowded bay so a neighboring arc doesn’t darken your lens; turn it up outdoors so your own arc reliably triggers it.
• Delay — how long the lens stays dark after the arc stops. Long delay protects you during TIG post-flow; short delay lets you see the finished bead sooner.

Power comes from a replaceable lithium battery, a solar cell, or both. Hybrid solar/battery models are the safer buy: the solar cell assists and keeps the battery topped up so the filter doesn’t die mid-job. A dead battery on a solar-only helmet in a dim corner is a classic way to end up welding behind a lens that never darkens.

Matching the Helmet to Your Process Mix

Choose by what you actually weld, not by the spec sheet’s widest number.

Your work	Best helmet fit	Typical setting
Single process, one amperage band	Passive hood, correct plate	Shade 10 (11–12 for heavy stick)
Mixed shop: MIG, TIG, light fab	ADF, shades 9–13	10 for MIG, 9–11 for TIG
Field work, thick plate, gouging	ADF with wide range plus grinding	11–13; drop to 4 for inspect/grind
Precision TIG on thin material	ADF, low light state, true-color optics	Shade 8–9 dark state

If you weld aluminum, spray-transfer MIG on thick plate climbs the amperage column quickly while pulsed and short-circuit settings sit much lower. Our aluminum MIG welding guide covers those current ranges, and they translate directly into the shade you dial in.

One more compliance detail: an ADF assembly only counts as OSHA-compliant when it meets 29 CFR 1926.102, which means it carries ANSI Z87.1 impact and optical certification. As Miller’s helmet selection guide and this primer on auto-darkening helmets both emphasize, certification gets the helmet in the door; your shade choice is what keeps you legal arc after arc.

How to Choose the Right Shade: A Step-by-Step Method

Picking the correct shade isn’t about guessing what “looks right”, it’s about finding the perfect balance between protection and puddle visibility. The smallest oversight can lead to eye strain, or worse, photokeratitis. With the right method, you can dial in your lens for any job without sacrificing either safety or your weld quality.

Step 1: Identify Your Process

Every arc produces a different amount of radiant energy. Stick, MIG, TIG, plasma cutting, and oxyfuel all demand their own starting point. For example, lower amp TIG will call for a much lighter shade than heavy duty stick welding at high amperage. If you’re working with more finicky base metals, such as the ones you’ll run into for aluminum MIG welding, pay extra attention to this step, as the arc characteristics can be deceptively bright.

Step 2: Read Your Amperage or Material Thickness

Now, grab your machine’s amperage, or your material’s thickness. This is the most important factor, as shade requirements scale with amperage — higher current arcs are brighter and demand darker filters. Find these numbers before you ever touch your shade dial, as they will be your jumping off point for the rest of the selection process.

Step 3: Find the Minimum and Apply the ANSI Rule

Cross reference your process and amperage with your welding lens shade chart to locate your minimum protective shade. From there, follow the standard selection rule from ANSI Z49.1: start with a shade too dark to see the weld zone, then go lighter until the weld zone is visible without dropping below the minimum. Keep in mind that OSHA guidance notes shade numbers are guides that may be varied to suit individual needs, as long as the minimum protective shade is met.

Step 4: Test With the “Too Dark, Then Step Lighter” Method

Strike a quick, short test bead in your exact set up before committing to a full pass. If you cannot make out the leading edge of your puddle at all, you’re too dark. Step your shade down one increment at a time until you can clearly see the puddle, puddle tail, and any joint prep without squinting. The second you can see those details with comfort, lock into that shade. Never go below the minimum that you found in step 3 to accomplish this.

Step 5: Verify With Your Helmet and Adjust For Conditions

For those running multiple processes, your equipment matters. For mixed-process work, an adjustable auto-darkening helmet covering shades 9-13 covers the widest set of tasks. Before welding, test your helmet’s sensors by covering them and striking an arc, check your delay and sensitivity settings, and ensure your ADF is set to at least your minimum. Additionally, take ambient light into account. Bright shop lighting or working outdoors in the sun can sometimes trick sensors, so a quick verification before each major change is vital.

Your Quick Selection Checklist

• Process: Identify exactly what you’re doing before anything else.
• Power: Confirm your amperage or material thickness off of your machine.
• Minimum: Find the minimum protective shade on your chart for those numbers.
• Test: Use the “too dark, then step lighter” method, never below the minimum.
• Verify: Test your helmet sensors, battery, and shade range for your process.
• Re-check: Re-evaluate your shade any time you change process, amperage, or your work environment.

At the end of the day, the chart isn’t meant to restrict you, it’s meant to free you up. By following this method every time, you’ll be able to protect your eyes, see your puddle with confidence, and lay your cleanest bead with far less fatigue.

Common Mistakes and Troubleshooting Your Shade Selection

Knowing the chart is only half the battle. Most eye-strain complaints and near-misses don’t come from welders who never read a shade chart; they come from welders who read it once and then fell into a habit. Shade selection is a per-job decision, and these are the mistakes that come up again and again.

Mistake 1: One Shade for Every Job

A helmet that lives at shade 10 all week is fine for 90-amp TIG work and genuinely dangerous on 150-amp stick. Processes and amperage change from task to task, so the minimum shade changes with them. If you run a fixed-shade passive helmet, keep a spare cartridge or two of the next darker and next lighter shade in your toolbox. If you run an auto-darkening helmet, get in the habit of glancing at the dial every time you change process or material.

Mistake 2: Too Light a Shade

This is the classic error from the arc-flash story. Insufficient shade shows up as eye fatigue mid-shift, watering eyes, a gritty sensation, and light sensitivity after welding. Those are the warning signs of photokeratitis, and OSHA treats the shade tables in 29 CFR 1926.102 as enforceable minimums for exactly this reason. Critically, a shade set too light is a violation even on an ANSI-compliant auto-darkening helmet. Certification covers the device; your setting covers you.

Mistake 3: Too Dark a Shade

Going the other direction isn’t safer, just harder. When you can’t see the puddle clearly, you strain, your head creeps closer to the arc, and your travel speed and torch position drift. The result is inconsistent beads, lack of fusion, and often a rework job. As a rule, pick the darkest shade you can still see the puddle with comfortably, and if you’re squinting, step one shade lighter.

Mistake 4: Ignoring Amperage Changes

A common shop pattern: dial the machine up for a thick joint, forget to touch the helmet. Every jump in amperage pushes you toward the next shade band on the chart. The same applies when you switch from, say, aluminum MIG work (see our Aluminum MIG Welding: The Complete Practical Guide) to steel stick the same afternoon.

Mistake 5: Unrated, Damaged, or Counterfeit Lenses

Buying the cheapest filter plates online is a gamble. Unmarked or counterfeit lenses may not deliver the shade printed on the label, and scratched, crazed, or delaminating plates degrade protection unpredictably. Look for the manufacturer’s shade marking and the ANSI Z87.1 certification stamp. Replace damaged filters immediately, and always run a clear cover lens over the filter to take the spatter hits instead.

Mistake 6: Sensor and Mode Problems on ADF Helmets

Auto-darkening helmets detect the arc through small sensors on the front of the shell. Out-of-position work, a helper’s body, or a poor angle to the arc can block those sensors, so the helmet never darkens even though it’s set correctly. Sensitivity controls and sensor count matter here: more sensors mean more chances to catch the arc from awkward angles, and a higher sensitivity setting helps in bright ambient light. Also watch the mode switch. Grinding mode leaves the lens in its light state, so using it during welding means welding essentially unprotected.

Mistake 7: Forgetting Side Shields and Bystanders

A helmet protects the front; arc radiation scatters sideways. Welders grinding nearby, helpers watching a root pass, and fire watchers all need eye protection with lateral coverage. Filter eyewear worn under a helmet must comply with the combined-shade rules, since stacking two filters adds density beyond what either rating alone describes.

Symptom	Likely Cause	Fix
Eyes gritty or watery after welding	Shade too light for the amperage	Step up one or two shades per the chart
Constant squinting, leaning in	Shade too dark	Step one shade lighter until the puddle is clear
Helmet didn’t darken at all	Blocked sensors, dead battery, or grinding mode	Clean sensors, replace battery, check mode switch
Helmet darkens late or intermittently	Low sensitivity, poor arc angle, too few sensors catching the arc	Raise sensitivity, reposition, consider a multi-sensor helmet
Uneven welds, drifting arc	Straining through too dark a filter	Lighten the shade; verify against the chart
Blurry or patchy darkening	Scratched or delaminating filter plates	Replace plates and fit a fresh clear cover lens
Discomfort despite correct shade	Wrong lens tint for the task	Try a gray or true-color filter; see the lens color section above

For more on how ADF helmets behave in daily use, this primer on auto-darkening weld helmets is a solid follow-up read. And if you work across processes, from flux-cored work (Aluminum Flux Core Welding: What Actually Works in 2026) to specialty repair like Alloy Wheel Welding: A Comprehensive Guide to Safe and Effective Aluminum Wheel Repair, treat the shade chart as a lookup you make at the machine, not a number you memorize once.

Beyond the Arc: Shades for Cutting, Brazing, Grinding, and Nearby Workers

Most people picture the shade chart as a welding tool, but the same table covers a whole family of hot work that never touches a filler rod. Plasma cutting, oxyfuel cutting, torch brazing, gouging, and grinding all emit radiant energy, and each has its own minimum filter shade. Skip the chart on these tasks and you get the same gritty eyes as the arc welder in our intro story — sometimes worse, because cutting torches are exactly where people get careless about eye protection.

Plasma Arc Cutting: Shade Follows Current, Not Plate

Plasma cutting is rated by amperage, not material thickness, because arc intensity is set at the power supply. The current OSHA minimums in 29 CFR 1926.102, Table E-1 line up like this:

Plasma current	Minimum filter shade
Under 300 A	Shade 8
300–400 A	Shade 9
400–800 A	Shade 10

Two practical notes. First, a shop machine capped at 60 A or 100 A still sits in the “under 300 A” row, so shade 8 is the floor and a shade 9 or 10 lens is perfectly acceptable. Second, higher density than the listed shade is always allowed; going lighter than the table is the violation. OSHA says as much in its eye protection fact sheet on welding, and the same logic applies to every row below.

Oxyfuel Cutting, Gas Welding, and Torch Brazing: The Light-Shade End

This is where the chart gets surprisingly gentle. A neutral oxyfuel flame produces far less visible and infrared output than an electric arc, so the filters are light enough that cutting goggles feel almost transparent next to a shade 10 welding plate.

Task	OSHA minimum shade
Oxygen cutting, light work under 1 in thick	Shade 3
Oxygen cutting, 1–6 in thick	Shade 4
Oxygen cutting, over 6 in thick	Shade 5
Oxyfuel gas welding, light to medium work	Shade 4
Oxyfuel gas welding, heavy work	Shade 5
Torch brazing	Shade 3–4
Light oxygen cutting (handheld torch)	Shade 3–4

That 3–4 range for brazing is why amber-flashed cutting goggles look so pale. They are not defective and they are not “too light for safety” — they are matched to a flame process rather than an arc. If you grab a shade 10 plate for a brazing job, you will not get hurt, but you will struggle to see the joint flow and will likely push the puddle off position. The trick is switching shades when you switch processes, not wearing one lens for the whole day. The same discipline matters in Air Acetylene Welding: Torch Basics, Brazing & Safety, where small torch work demands clear visibility of a tiny heat-affected zone.

Air Carbon Arc Cutting and Grinding

Carbon arc gouging uses a real electric arc plus a jet of compressed air, so treat it like stick welding: match the shade to the amperage in the gouging torch, with shade 10 as the common working floor at typical currents and darker settings for high-current gouging bars. Equipment and technique are covered in Air Arc Welding and Carbon Arc Gouging: Process, Safety, Applications, and Best Practices.

Grinding is different again. There is no arc, but there is a stream of sparks, hot scale, and shattered abrasive coming off the wheel. Most shops run shade 2–3 tinted grinding goggles for comfort during extended sessions, and at minimum you should wear impact-rated eyewear marked to OSHA 1910.133 standards with the side shields intact. Tinted grinding lenses are a comfort choice; impact resistance is the safety requirement.

Helpers, Fire Watchers, and Bystanders

The chart only works if everyone in the line of fire is covered. ANSI Z49.1 recommends eye and face protection with lateral (side) coverage for welding, cutting, and allied operations — not just for the person holding the torch, but for anyone within viewing range who can catch the arc in peripheral vision.

• Fire watchers and helpers need protection rated for the process they are observing, not safety glasses alone, and their helmets or goggles should wrap around the temples so light cannot leak in from the side.
• Bystanders behind you can receive reflected arc energy off shiny metal, so screens, curtains, and a quick verbal warning are part of eye protection.
• Filter eyewear under a helmet is acceptable, but the outer filter in your line of sight must meet the chart minimum for the work. Wearing a shade 5 goggle under an auto-darkening helmet set to shade 9 protects nobody if the helmet fails to darken.

Keep a printed shade card taped inside your toolbox lid, read it before every process change, and treat lateral coverage as non-negotiable. The chart only protects the people who actually consult it — and everyone standing beside them. For a full process-by-process breakdown, return to our shade chart tables above and re-check your settings whenever the work changes.

Practical Tips, Care, and the Takeaway

After going over every part of the welding lens color chart, the last thing to remember is this: the perfect shade means nothing if your gear can’t actually protect you anymore. Eye protection is a system, and a small crack, a dead battery, or a scratched lens can be just enough to expose you to the exact damage that the chart is meant to prevent. With that in mind, a few minutes of care can go a long way for a lifetime of clear vision.

Helmet and Lens Maintenance

Your filter is the most expensive piece of protection on your helmet, so it should be treated as such. A majority of the abuse it takes comes from direct spatter and scratches, all of which can be prevented with the right upkeep.

• Shield the filter: Always use a clear cover lens over the filter lens. Clear cover plates protect the expensive filter lens and should be replaced when heavily scratched. These are meant to be the sacrifice, not your auto-darkening cartridge.
• Inspect before every job: Take a moment to check your cover lens, filter, and helmet body for crazing, deep gouges, delamination, or warping. Damaged or heavily scratched filters scatter light and reduce effective protection and should be replaced, even if the helmet still appears to darken.
• Store with intention: Keep your filters away from direct heat, loose scrap, and grinding debris. Tossing an unprotected lens into the bottom of a toolbox is one of the fastest ways to ruin it.
• Clean gently: Only use a clean, soft cloth to wipe your lenses. Avoid harsh chemicals or abrasive rags, as they can do more harm than the spatter you’re trying to wipe off.

Buying, Compliance, and Readiness

Whether you’re picking up your first helmet or replacing an old one, safety certifications should be non-negotiable. Before you strike your first arc, take a minute to verify the paperwork of your gear.

• Verify your markings: Certified helmets carry Z87.1 markings and the shade range printed on the helmet or lens housing. This certification is the device requirement that works hand in hand with the eye protection mandates found within OSHA 1910.133.
• Know your range: Double check the manufacturer shade range on your helmet shell. An auto-darkening filter can only protect you within that range, meaning it will never be a substitute for going below the minimum required by the chart.
• Check your power: For battery or solar powered ADF’s, test your sensitivity and delay, check your batteries, and make sure your grind mode isn’t accidentally engaged. A helmet that won’t darken is just as dangerous as a lens that is too light.
• Keep spares on hand: Cover lenses are cheap for a reason. Keep a couple in your box so a scratched one never forces you to weld with a compromised view.

Make the Chart a Habit

With all of this being said, gear maintenance is only half of the battle. The other half is the selection itself. Keeping a laminated shade chart in the toolbox makes correct selection the default rather than the exception. No matter if you’re running stick, cutting, or working with precise jobs such as aluminum MIG welding, having that card within arms reach will prevent rushed guesswork.

Most importantly, re-evaluate shade whenever process or amperage changes. A jump of only a few dozen amps can cross a required shade threshold, and every change is a chance to double check. When in doubt, reference the minimums within OSHA 1926.102, and lean towards the darker, ANSI/AWS recommended values. Remember the golden rule for this entire guide: darker is always allowed, lighter is never compliant.

The Takeaway

The logic behind a welding lens color chart isn’t about aesthetics, it’s about blocking the invisible. Shade is your safety rating against ultraviolet and infrared radiation, whilst lens color is solely a comfort and puddle visibility choice. All of the tables, authorities, and technologies all point to the same goal: protect your eyes before the arc is struck.

Inspect your gear, replace what’s damaged, certify what you buy, and never guess your shade. Do this for every job, every time. That alone is the greatest piece of welding advice you could ever apply to your eyes, ensuring the only thing left from your work, is a solid weld.

Frequently Asked Questions

What shade welding lens do I need?

It depends on your process and amperage. Common starting points are shade 10 for stick welding at 60-160A, shade 10-12 for MIG in that range, and shade 10-12 for TIG at 50-150A. Use the chart minimum as a floor, then pick the darkest shade you can still see the weld puddle with.

Is a shade 10 lens enough for all welding?

No. Shade 10 meets OSHA’s minimum for several common ranges, but ANSI/AWS recommend darker shades as amperage climbs — shade 12 around 160-250A and shade 14 above 250A. A shade 10 lens used at high current leaves you under-protected.

What is the difference between lens shade and lens color?

Shade is the safety rating — how much visible light the filter blocks, numbered roughly 3 to 14. Color is the tint of the light that gets through, such as traditional green, neutral gray, or true-color blue-filter lenses. Color affects clarity and comfort; shade determines protection.

Can I weld with a lens that is darker than the chart says?

Yes. OSHA states that shades more dense than those listed may be used to suit the individual’s needs. The only real limit is visibility — if it’s so dark you can’t see the weld zone, you’ll strain and lose control of the puddle.

What shade should my auto-darkening helmet be set to?

Set it to the shade range the chart gives for your process and amperage — most helmets cover shades 9-13, which handles most stick, MIG, and TIG work. For low-current TIG or cutting and grinding modes, many helmets go lighter, down to shades 4-8.

Why does everything look green through my welding lens?

Traditional welding glass is a green-tinted absorptive filter that blocks UV and IR efficiently but distorts color. Modern gray or true-color lenses widen the visible spectrum so the arc, puddle, and base metal look more natural, which many welders find reduces eye fatigue.

What shade do people working near a welder need?

Helpers, fire watchers, and nearby workers still need filtered protection, typically lighter than the welder’s shade — OSHA’s tables list around shade 8 for helpers near stick welding. Side coverage matters too, since arc radiation reaches the eyes from angles, not just straight on.

What shade is used for cutting and grinding instead of welding?

Oxyfuel cutting generally needs shades 3-5 depending on plate thickness, torch brazing shade 3-4, and plasma cutting shades 8-10 depending on current. Grinding usually calls for shade 2-3 or dedicated grinding goggles, which is why many helmets include a light grinding mode.

How do I know if my auto-darkening helmet is legal for my job?

Check that the helmet and lens carry ANSI Z87.1 certification markings and that the selected shade covers the process and arc current you’re running. A compliant helmet set to too light a shade is still a violation of the shade requirement.