Choosing the right welding lens shade isn’t just about comfort. Your eyes depend on it. After 10 years in metal fabrication, I’ve seen too many welders learn this lesson the hard way. Arc eye (photokeratitis) feels like sandpaper in your eyes, and retinal damage is permanent. The right lens shade prevents both.
This welding lens shade guide chart covers all major processes with both OSHA minimum requirements and practical recommendations from professional welders who actually use this equipment daily.
What Lens Shade Do I Need for Welding?
For most welding applications, you need shade 10-13. MIG and Stick welding typically require shade 11-13, TIG welding uses shade 8-12, and plasma cutting needs shade 6-11 depending on amperage. Always select a shade that provides adequate visibility while protecting from harmful UV and IR radiation.
- Key Point: OSHA minimums are often too light for comfort
- Best Practice: Start darker, adjust lighter if needed
- Safety First: UV/IR protection matters more than visible light darkness
Let me explain why this matters. The welding arc produces three types of radiation: visible light, ultraviolet (UV), and infrared (IR). While visible light brightness is what you notice, UV and IR cause the actual damage. Proper lens shades filter all three.
Quick Reference Lens Shade Chart
This chart shows the recommended lens shades for all common welding operations. The minimum shade column represents OSHA requirements, while the recommended column reflects what professional welders actually use for comfort and extended welding sessions.
| Welding Process | Operation/Amperage | Minimum Shade (OSHA) | Recommended Shade |
|---|---|---|---|
| Stick (SMAW) | Under 60A | 7 | 9-10 |
| Stick (SMAW) | 60-160A | 8 | 10-11 |
| Stick (SMAW) | 160-250A | 10 | 11-12 |
| Stick (SMAW) | 250-500A | 11 | 12-13 |
| MIG (GMAW) | Under 60A | 7 | 9-10 |
| MIG (GMAW) | 60-160A | 10 | 10-11 |
| MIG (GMAW) | 160-250A | 10 | 11-12 |
| MIG (GMAW) | 250-500A | 11 | 12-13 |
| Flux Core (FCAW) | Under 60A | 7 | 9-10 |
| Flux Core (FCAW) | 60-160A | 10 | 10-11 |
| Flux Core (FCAW) | 160-250A | 10 | 11-12 |
| Flux Core (FCAW) | 250-500A | 11 | 12-13 |
| TIG (GTAW) | Under 50A | 8 | 8-10 |
| TIG (GTAW) | 50-150A | 8 | 10-11 |
| TIG (GTAW) | 150-250A | 10 | 11-12 |
| TIG (GTAW) | Over 250A | 10-12 | 12-13 |
| Air Carbon Arc | All amperages | 12 | 13-14 |
| Plasma Cutting | Under 20A | 6 | 6-7 |
| Plasma Cutting | 20-40A | 7 | 8 |
| Plasma Cutting | 40-60A | 8 | 9 |
| Plasma Cutting | 60-80A | 9 | 10 |
| Plasma Cutting | 80-300A | 10 | 11 |
| Oxy-Fuel Cutting | All operations | 3-4 | 4-5 |
| Gas Welding | Light to medium | 4-5 | 5-6 |
MIG Welding Lens Shade Guide
Gas Metal Arc Welding (MIG) produces a consistent, moderately bright arc. The shade you need depends primarily on your wire diameter and amperage output.
Quick Summary: MIG welding typically requires shade 10-12 for most applications. Light duty work under 60 amps can use shade 9-10, while heavy production welding over 250 amps needs shade 12-13.
Light Duty MIG (Under 60 amps)
Use shade 9-10 for thin gauge metal, auto body work, and light fabrication. This includes .023-.030 wire sizes running at the lower end of your machine’s capacity.
Medium Duty MIG (60-160 amps)
Shade 10-11 covers most general fabrication. I’ve found shade 10 works well for 1/8 to 3/16 inch steel with .035 wire. This is the sweet spot for hobby welders and general shop work.
Heavy Duty MIG (160-250 amps)
Step up to shade 11-12 for 1/4 inch and thicker materials. Production welding with .045 wire at 200+ amps creates serious arc intensity that requires darker filtration.
Production MIG (250+ amps)
Industrial applications running .052 wire or heavy flux core need shade 12-13. Pipeline and structural welders I know prefer shade 12 or 13 for all-day production work.
Stick Welding (SMAW) Lens Shade Guide
Shielded Metal Arc Welding varies significantly based on electrode type and amperage. The arc characteristics differ between 6010, 6011, 7018, and other rods.
6010 and 6011 Rods
These cellulose rods run hot and penetrating. At typical rod amperages (90-140 amps for 1/8 inch), shade 10-11 works well. The arc is somewhat harsher than 7018, so don’t go too light.
7018 Rods (Most Common)
The standard low-hydrogen rod produces a smoother, slightly brighter arc than 6010. For 7018 at 110-180 amps (typical 3/32 and 1/8 rod sizes), shade 11-12 provides excellent visibility with adequate protection.
Heavy Rods (5/32 and larger)
Running 5/32 or 3/16 inch rods at 180+ amps demands shade 12-13. The arc intensity at these amperages is serious, and professional welders consistently choose darker shades for extended sessions.
6010: Shade 10-11
Light Rods: Shade 9-10
TIG Welding Lens Shade Guide
Gas Tungsten Arc Welding (TIG) generally requires lighter shades than stick or MIG because the arc is less intense and more concentrated. However, material type affects your needs.
Low Amperage TIG (Under 50 amps)
Shade 8-10 works well for thin gauge work, precision TIG on stainless, and orbital applications. At these low amperages, visibility matters more than maximum darkness.
Medium TIG (50-150 amps)
Shade 10-11 covers most standard TIG applications including 1/8 to 1/4 inch material. This range provides good puddle visibility while protecting your eyes during extended welds.
High Amperage TIG (150+ amps)
For heavy aluminum production or thick stainless work, shade 11-12 is appropriate. Aluminum TIG often requires slightly darker shades than steel due to reflectivity.
Aluminum TIG Note
Aluminum reflects more light and often runs at higher amperages than steel of the same thickness. Many TIG welders use one shade darker for aluminum compared to steel.
Plasma Cutting Lens Shade Guide
Plasma cutting requires significantly lighter shades than welding because the plasma arc, while bright, is less intense than a welding arc and is typically viewed for shorter durations.
Light Plasma (Under 40 amps)
Shade 6-8 suffices for most DIY plasma cutters and light fabrication work. This includes 30-40 amp machines cutting 16-20 gauge material.
Medium Plasma (40-80 amps)
Shade 8-10 covers most production cutting. At 60 amps cutting 3/8 inch plate, shade 9 is comfortable and provides adequate protection.
Heavy Plasma (80+ amps)
For industrial machines running 100+ amps, use shade 10-11. High-definition plasma and machines cutting 1 inch plus material require this level of protection.
Understanding Lens Shade Numbers
Shade Number: A numerical rating (typically 3-14) that indicates the optical density of a welding filter lens. Higher numbers provide greater protection from visible light, UV radiation, and infrared radiation. The scale is logarithmic, meaning each step represents a significant increase in filtration.
Shade numbers aren’t linear. Shade 10 isn’t just slightly darker than shade 9—it filters significantly more light. The scale measures optical density, with each number reducing light transmission considerably.
Think of it this way: shade 3 is like sunglasses (suitable for torch work), while shade 14 is nearly opaque (needed for carbon arc welding over 500 amps). The difference between shade 10 and 11 is noticeable, but the difference between shade 3 and 14 is dramatic.
Here’s what shade numbers actually mean in practice:
| Shade Number | Light Transmission | Typical Application |
|---|---|---|
| 3-4 | High transmission | Torch work, oxy-fuel cutting |
| 5-7 | Moderate transmission | Light plasma cutting, gas welding |
| 8-10 | Reduced transmission | Light TIG, low-amp MIG/Stick |
| 11-13 | Low transmission | Most welding applications |
| 14 | Minimal transmission | Carbon arc welding, extreme amperage |
One important distinction: UV and IR protection is NOT directly tied to shade number. Quality welding lenses filter UV and IR across all shade ratings. A proper shade 10 lens provides the same UV/IR protection as shade 14—the difference is visible light darkness only.
Optical Density: A measure of how much light passes through a filter. Higher optical density means less light transmission. All quality welding lenses must provide adequate UV and IR filtration regardless of shade number, as these invisible rays cause the most eye damage.
OSHA and ANSI Safety Standards
OSHA standard 29 CFR 1910.252 specifies minimum shade requirements for welding operations. These are legal minimums, not necessarily what’s comfortable or ideal for extended work.
Key OSHA requirements include:
- Eye protection must meet ANSI Z87.1 standards
- Filter lenses must have appropriate shade numbers for the operation
- Protective eyewear must be worn underneath welding helmets during grinding and chipping
- Face shields alone are insufficient—proper filter lenses are mandatory
ANSI Z87.1 is the standard for occupational and educational personal eye and face protection devices. When selecting welding lenses, look for this certification mark to ensure the lens meets minimum impact resistance and optical quality standards.
Important: OSHA minimum shades are exactly that—minimums. Most professional welders use shades 1-2 numbers darker than OSHA minimums for comfort and added safety margin. Just because shade 8 is “legal” for your application doesn’t mean it’s ideal.
Auto-Darkening Helmet Settings Guide
Auto-darkening helmets have revolutionized welding safety and productivity. Instead of flipping your helmet up and down, you see clearly between welds and the lens darkens automatically when you strike an arc.
Variable shade helmets typically offer a range from shade 9 to 13. For most applications, set your helmet to:
- MIG welding: Shade 10-11 (adjust based on material thickness)
- Stick welding: Shade 11-12 (7018 runs better slightly darker)
- TIG welding: Shade 9-11 (lighter for precision work)
- Plasma cutting: Set to lowest setting if helmet allows, or shade 8-9
Quality auto-darkening helmets have a fail-safe feature—if the batteries die or electronics fail, the lens defaults to the dark state (usually shade 10 or darker). This ensures you’re protected even during electronic failure.
Auto-Darkening Settings Reference
Shade 9-10
Shade 10-11
Shade 11-12
Shade 12-13
Frequently Asked Questions
What shade lens is best for MIG welding?
For most MIG welding applications, shade 10-12 is best. Use shade 9-10 for light duty work under 60 amps, shade 10-11 for general fabrication (60-160 amps), and shade 11-13 for heavy applications over 160 amps. The exact shade depends on your machine output and material thickness.
What is the OSHA standard for welding lens shades?
OSHA standard 29 CFR 1910.252 specifies minimum shade numbers ranging from 7-11 depending on welding process and amperage. For stick welding under 60 amps, minimum is shade 7. For stick welding over 500 amps, minimum is shade 11. These are legal minimums—most welders prefer darker shades for comfort.
What does shade number mean on welding lens?
The shade number indicates how dark the lens filter is, measured on a scale from 3 (light) to 14 (darkest). Each number represents increasing optical density. Shade 10 transmits very little visible light while shade 3 is relatively light. Higher numbers block more visible light, but all quality welding lenses provide UV and IR protection regardless of shade number.
Can you weld with shade 10?
Yes, shade 10 is appropriate for light to medium welding applications. It works well for MIG welding under 160 amps, light stick welding under 100 amps, and TIG welding under 50 amps. However, for higher amperage applications or extended welding sessions, you may prefer shades 11-13 for added comfort and eye strain reduction.
What shade for 7018 rod?
For 7018 electrodes typically used at 110-180 amps, shade 11-12 is recommended. At lower amperages (90-110 amps) with smaller 7018 rods, shade 10 may suffice. At higher amperages (180+ amps) with 5/32 or larger 7018 rods, use shade 12-13 for adequate protection and comfort.
What shade lens for TIG welding?
TIG welding typically requires lighter shades than other processes. Use shade 8-10 for TIG under 50 amps, shade 10-12 for 50-150 amps, and shade 12-13 for over 150 amps. Aluminum TIG often requires slightly darker shades than steel due to brightness and reflectivity. Most TIG welders prefer shade 10-11 for general work.
What is the darkest welding lens shade?
Shade 14 is the darkest standard welding lens shade available. It’s primarily used for high-amperage carbon arc welding and air carbon arc cutting over 500 amps. Shade 14 filters nearly all visible light and provides maximum protection from intense UV and IR radiation. Most welding applications never require shade 14.
What shade for plasma cutting?
Plasma cutting requires lighter shades than welding. Use shade 6-8 for under 20 amps, shade 8 for 20-40 amps, shade 9 for 40-60 amps, shade 10 for 60-80 amps, and shade 11 for over 100 amps. The plasma arc is less intense than welding arcs but still requires proper protection from UV radiation.
Final Safety Tips
After years in the trade, here are the practical tips that matter most:
- Start darker, not lighter. If you can’t see well enough, step down one shade. If you start too light, you’ve already exposed your eyes.
- Replace scratched lenses immediately. Cracks and scratches can leak UV radiation even if the lens appears dark enough.
- Consider your environment. Overhead welding and confined spaces often require darker shades due to reflected light.
- Your eyes change with age. Older welders often need darker shades as light sensitivity increases.
- When in doubt, go darker. Eye strain and fatigue are signs your shade is too light. Permanent damage can occur without immediate symptoms.
Welder’s Flash (Photokeratitis): A painful eye condition caused by UV radiation exposure from welding arcs. Symptoms include burning, gritty-feeling eyes, light sensitivity, and excessive tearing. It typically develops 6-12 hours after exposure and can last 24-48 hours. Repeated exposure increases risk of permanent eye damage including cataracts and retinal injury.
Remember: this lens shade guide chart provides recommendations based on industry standards and professional experience. When selecting your lens shade, prioritize safety over convenience. Your vision is irreplaceable.
