Stainless steel sheet is flat-rolled stainless under about 3/16″ (4.76 mm) thick. It’s what kitchen backsplashes, commercial worktops, appliance panels, signage and food-plant equipment are made from. Buying the right sheet comes down to four choices: grade, thickness (gauge), finish and size. This guide explains each one with charts you can use when ordering, and covers how to cut, bend and look after the sheet once you have it.
Quick answers
- Most common grade: 304 (general use). Choose 316 for coastal, pool or chemical exposure, and 430 when cost matters more than corrosion resistance.
- Most common finishes: 2B (smooth mill finish), No.4 (brushed) and No.8 (mirror).
- Most common size: 48″ × 96″ (4′ × 8′). Metric: 1219 × 2438 mm or 1250 × 2500 mm.
- Typical thicknesses: 24–20 gauge for backsplashes and wall panels, 18–16 gauge for counters, sinks and equipment, and 14–11 gauge for heavy-duty parts.
- Weight rule of thumb: about 41.6 lb per sq ft per inch of thickness, or 7.93 kg per m² per mm.
What counts as “sheet”? Sheet vs plate vs strip vs foil
The names describe the thickness and width of flat-rolled stainless. The usual reference is ASTM A480, the general specification behind ASTM A240 plate, sheet and strip:
| Product | Typical thickness | Typical width | Usually made by |
|---|---|---|---|
| Foil / shim | Under about 0.005″ (0.13 mm) | Narrow rolls | Cold rolling |
| Strip | Under 3/16″ (4.76 mm) | Under 24″ (610 mm) | Cold rolling + slitting |
| Sheet | Under 3/16″ (4.76 mm) | 24″ (610 mm) and wider | Cold rolling (2B, BA finishes) |
| Plate | 3/16″ (4.76 mm) and thicker | 10″ and wider | Hot rolling (No.1 finish) |
In practice, suppliers call anything you can buy as a flat panel under about 5 mm “sheet”. Material from coil is cold rolled, which gives tighter thickness tolerances and a smoother surface than hot-rolled plate. That’s why almost all sheet you see in kitchens and on appliances is cold rolled. For thicker material, see our guide to stainless steel plate and its finishes.
Choosing the grade
The grade is the alloy recipe. It decides how well the sheet resists corrosion, whether it’s magnetic, how easily it forms and welds, and much of the price. Most sheet sold for home and commercial projects is one of these:
| Grade | Family | Magnetic? | Corrosion resistance | Typical sheet uses |
|---|---|---|---|---|
| 304 / 304L | Austenitic (18% Cr, 8% Ni) | No (slightly after cold work) | Very good indoors and in most outdoor settings | Kitchens, backsplashes, sinks, food equipment, architecture |
| 316 / 316L | Austenitic + 2–3% molybdenum | No | Better against salt, chlorides and chemicals | Coastal buildings, boats, pools, chemical and pharma equipment |
| 430 | Ferritic (~17% Cr, no nickel) | Yes | Fair indoors. Can spot-rust outdoors. | Appliance panels, trim, range hoods, budget backsplashes |
| 201 | Austenitic, low nickel (manganese added) | No / slightly | Below 304 | Low-cost decorative sheet, some sinks |
| 409 | Ferritic | Yes | Modest. Surface rust is common. | Exhaust systems, heat shields |
| 321, 309, 310 | Austenitic, heat-resisting | No | Good at high temperature | Exhaust manifolds, furnace parts, heat shields |
| 2205 | Duplex | Yes | Higher than 316, and much stronger | Chemical tanks, offshore, structural |
| 17-7 PH | Precipitation hardening | Yes (after hardening) | Similar to 304 | Springs, clips, aerospace parts |
The “L” grades (304L, 316L) have less carbon. That keeps welds from losing corrosion resistance, so pick them for anything you’ll weld heavily. Much sheet today is dual-certified (for example “304/304L”). Note that 308 is a welding filler used to join 304, not a sheet grade.
Not sure which one you need? Start with stainless steel types and grades, then the head-to-head guides: 304 vs 316, 304 vs 304L, 316 vs 316L, 201 vs 304 and 2205 vs 316.
Stainless steel sheet gauge and thickness chart
Gauge numbers run backwards: the higher the gauge, the thinner the sheet. Stainless gauges are not the same as carbon-steel or aluminum gauges. For example, 10-gauge stainless is 0.1406″, while 10-gauge carbon steel is 0.1345″. So always confirm the decimal thickness when you order. Weights below are for 304 (density 7.93 g/cm³). 316 is about 1% heavier, and 430 about 2% lighter.
| Gauge | Inches | mm | lb / sq ft | kg / m² | Common uses |
|---|---|---|---|---|---|
| 30 | 0.0125 | 0.32 | 0.52 | 2.5 | Shims, liners, crafts |
| 28 | 0.0156 | 0.40 | 0.65 | 3.2 | Flashing, light trim |
| 26 | 0.0187 | 0.48 | 0.78 | 3.8 | Wall cladding over a backer, ducting |
| 24 | 0.0250 | 0.64 | 1.04 | 5.1 | Backsplashes (on a solid backer), wall panels |
| 22 | 0.0312 | 0.79 | 1.30 | 6.3 | Backsplashes, hoods, enclosures |
| 20 | 0.0375 | 0.95 | 1.56 | 7.5 | Range hoods, cabinet doors, wall protection |
| 18 | 0.0500 | 1.27 | 2.08 | 10.1 | Residential sinks, worktops, equipment panels |
| 16 | 0.0625 | 1.59 | 2.60 | 12.6 | Commercial worktops and sinks, heavy-duty counters |
| 14 | 0.0781 | 1.98 | 3.25 | 15.7 | Brackets, machine guards, tanks |
| 12 | 0.1094 | 2.78 | 4.55 | 22.0 | Structural parts, truck and trailer panels |
| 11 | 0.1250 (1/8″) | 3.18 | 5.20 | 25.2 | Heavy brackets, base plates |
| 10 | 0.1406 | 3.57 | 5.85 | 28.3 | Heavy fabrication |
| 8 | 0.1719 | 4.37 | 7.15 | 34.6 | Near-plate heavy parts |
| 7 | 0.1875 (3/16″) | 4.76 | 7.80 | 37.7 | Where sheet becomes plate |
Decimal and metric thicknesses. A lot of sheet is sold by decimal or metric size instead of gauge. For example, 0.005″ is shim/foil stock, 0.040″ sits between 20 and 18 gauge, 1/8″ is 11 gauge, and metric sheet comes in 0.5, 0.8, 1.0, 1.2, 1.5, 2.0, 3.0 and 4.0 mm. For a 4 mm sheet: 4 × 7.93 ≈ 31.7 kg/m².
Worked example: a 4′ × 8′ sheet is 32 sq ft. In 16 gauge it weighs 32 × 2.60 ≈ 83 lb (38 kg), which is a two-person lift. In 22 gauge it’s 32 × 1.30 ≈ 42 lb. For other shapes and sizes, use the stainless steel weight calculator. For help picking a thickness by project, see choosing the right thickness for stainless sheeting.
Standard sheet sizes
| Imperial sizes (US) | Metric sizes (Europe, Asia, Middle East) |
|---|---|
| 36″ × 96″ (3′ × 8′) | 1000 × 2000 mm |
| 36″ × 120″ (3′ × 10′) | 1219 × 2438 mm (the metric “4 × 8”) |
| 48″ × 96″ (4′ × 8′), the most common | 1250 × 2500 mm |
| 48″ × 120″ (4′ × 10′) | 1500 × 3000 mm |
| 60″ × 120″ / 60″ × 144″ (5′ × 10′ / 5′ × 12′) | 1500 × 6000 mm, or cut to length from coil |
Most suppliers also cut to size (shear, laser or waterjet). That’s often cheaper than buying a full sheet and paying for the offcut, and you get clean, square edges. Prices change with the metal markets. See stainless sheet metal supply and prices for what drives cost.
Finishes: from mill finish to mirror
The finish changes how the sheet looks, how easily it shows fingerprints and scratches, and how it cleans. Mill finishes come straight from the steel producer. Polished finishes are added afterwards with abrasive belts.
| Finish | Looks like | Best for |
|---|---|---|
| No.1 | Dull, rough, grey (hot rolled) | Thick plate, industrial use where looks don’t matter |
| 2D | Dull matte, non-reflective | Deep-drawn parts, industrial uses |
| 2B | Smooth, slightly reflective, cloudy grey | The default mill finish. Tanks, equipment, hidden parts, and a base for polishing. |
| BA (bright annealed) | Highly reflective, though not a true mirror | Appliance trim, reflectors, decorative parts |
| No.3 | Coarse brushed lines (~100–120 grit) | Industrial panels, food equipment |
| No.4 (brushed) | Fine, even grain lines (~150–180 grit) | Kitchens, appliances, elevators, backsplashes. Hides small scratches. |
| Hairline (HL) | Long, continuous fine lines | Lifts, architectural cladding, signage |
| No.8 (mirror) | Mirror-like reflection | Feature walls, signage, columns. Shows every fingerprint. |
Decorative and specialty sheet, for when plain brushed or mirror isn’t enough:
- Colored / black stainless (PVD): a thin vacuum-applied coating in black, gold, bronze or rose gold over a No.4 or mirror base.
- Etched: patterns chemically etched into the surface, usually on mirror or hairline sheet.
- Embossed / textured: pressed patterns such as quilted, water-ripple, linen or diamond. They hide dents and fingerprints well, which suits lift interiors and bar fronts.
- Perforated: punched holes (round, square, slotted) for screens, guards, speaker grilles and ventilation.
- Corrugated: wavy profile for wall cladding and roofing accents. It’s stiffer than flat sheet of the same gauge.
- Laminated / protective film: a peel-off PVC or laser-grade film that protects polished sheet during fabrication. Ask for laser film if the sheet will be laser cut, and remove the film within a few months, before sunlight bakes it on.
For a closer comparison of the two most popular looks, read brushed vs polished stainless steel.
Which sheet for which job?
| Project | Grade | Thickness | Finish |
|---|---|---|---|
| Kitchen backsplash | 304 (430 indoors on a budget) | 24–20 ga on a solid backer | No.4 brushed |
| Countertop / worktop | 304 | 16–14 ga, laminated to a substrate | No.4 |
| Range hood / wall protection | 304 or 430 | 22–18 ga | No.4 |
| Outdoor, coastal or poolside | 316 | As required | No.4 or smoother (smoother finishes resist staining better) |
| Boat and marine fittings | 316 / 316L | 16–11 ga | Polished |
| Food processing equipment | 304 / 316 | 16–12 ga | 2B or No.4 |
| Exhaust heat shield | 409, 321 or 304 | 22–18 ga | 2B |
| Signage and feature walls | 304 | 20–16 ga | Mirror, hairline, PVD color, etched |
Working with stainless sheet
Cutting
Stainless is tougher than mild steel and work hardens: it gets harder as you cut it, especially if the tool rubs instead of cutting. Match the method to the thickness:
- Aviation snips: fine for short cuts in thin sheet, about 24 gauge and thinner.
- Power shears and nibblers: clean straight or curved cuts up to about 18–16 gauge, with little heat and no sparks.
- Angle grinder with a thin “INOX” cut-off disc: fast, but hot and sparky. Use iron-free discs so you don’t contaminate the surface.
- Plasma, fiber laser and waterjet: the best options for accurate shapes. Most suppliers offer them as a service.
More detail in cutting stainless steel sheet metal.
Drilling
Use cobalt (M35/M42) bits, a slow speed, firm steady pressure and cutting fluid. If the bit squeals and stops cutting, the spot has work hardened. Back off, add fluid, and push harder at a slower speed. A step drill works well for clean holes in thin sheet.
Bending and forming
Annealed 304 bends well, but it springs back more than mild steel, so bend slightly past your target angle. As a starting point, keep the inside bend radius at least equal to the sheet thickness. On brushed sheet, bending across the grain lines hides marks better, and leaving the protective film on prevents press-brake scratches. See forming stainless steel sheet metal.
Joining
Thin sheet is usually TIG welded, because it gives precise heat control and the least distortion. Spot welding, rivets, screws and structural adhesives also work. Always use stainless fasteners. Mixing metals can cause galvanic corrosion, where one metal corrodes faster where the two touch. See TIG welding settings for stainless and stainless welding techniques.
Keep it “stainless” during fabrication
The most common cause of rust spots on new stainless is iron contamination: steel dust from nearby grinding, carbon-steel wire brushes, or tools shared with mild steel. Use dedicated stainless brushes and discs, keep the film on as long as possible, and clean off any filings. If staining appears, it can usually be removed and the surface passivated (chemically treated so its protective layer reforms). Read can stainless steel rust? for the causes and fixes.
Buying checklist
Put these on every quote request, so you get what you actually need and can compare prices fairly:
- Grade: e.g. 304/304L, 316L, 430.
- Thickness: as a decimal or mm, not just gauge (gauge charts vary).
- Finish: e.g. 2B, No.4, No.8, and which side(s) are finished.
- Size and quantity: full sheets or cut-to-size, with tolerances if they matter.
- Protective film: standard PVC, or laser-grade if it will be laser cut.
- Grain direction: for brushed sheet, whether the grain runs along the long side.
- Certification: ask for a mill test report (MTR) for structural, food or pressure work.
What drives price: the grade matters most. Nickel and molybdenum are expensive, so 316 usually costs more than 304, which costs more than 430. Mills also add an alloy surcharge that changes monthly with metal markets. Beyond that, thicker sheet, polished or decorative finishes, film, and cutting services all add cost. Small orders from online metal suppliers cost more per pound but save you buying a whole sheet. Metal service centers and local fabrication shops are usually cheapest for full sheets and larger jobs, and some have remnant bins with offcuts at a discount.
Looking after stainless sheet
Clean with warm water and mild dish soap, or a dedicated stainless cleaner. Wipe along the grain and dry to prevent water spots. Avoid chloride bleach, harsh scouring powders and steel wool, which leaves iron particles behind that rust. In coastal or poolside areas, rinse surfaces regularly to remove salt. Step-by-step help: how to clean stainless steel effectively and safely.
Frequently asked questions
Is stainless steel sheet magnetic?
It depends on the grade. 304 and 316 are essentially non-magnetic, although bending or forming can make them slightly magnetic. Ferritic grades such as 430 and 409 are fully magnetic. So a magnet test can’t tell you the quality of the steel. More in stainless steel and magnets.
What gauge stainless should I use for a kitchen backsplash?
22 or 20 gauge in 304 with a No.4 finish is the usual choice. Fit it over a flat, solid backer (drywall or plywood) with construction adhesive. Thinner 24 gauge is fine if the backer is perfectly flat.
Can I cut stainless sheet with tin snips?
For short cuts in thin sheet (about 24 gauge and thinner), yes, with good aviation snips. For anything thicker, or long straight cuts, power shears, a nibbler or a supplier’s cut-to-size service give a cleaner result with less effort.
What’s the difference between 304 and 316 sheet?
316 contains 2–3% molybdenum, which makes it more resistant to salt and chlorides. Choose it near the sea, around pools, or for chemicals. For most indoor and general outdoor uses, 304 is the better value. See the full 304 vs 316 comparison.
Is “sheet metal” the same as “plate”?
No. Stainless under 3/16″ (4.76 mm) is sheet, and 3/16″ and thicker is plate. Plate is usually hot rolled with a duller No.1 finish, while sheet is cold rolled and smoother.
Does stainless steel sheet rust?
It resists rust very well, but it isn’t rust-proof. Salt, chlorides, trapped moisture and iron contamination can cause surface rust or pitting, especially on lower grades like 430 or 201. Choosing the right grade and keeping it clean prevents almost all of it.
Standards and further reading
- ASTM A240: chromium and chromium-nickel stainless steel plate, sheet and strip.
- ASTM A480: general requirements for flat-rolled stainless (thickness and flatness tolerances, finishes).
- EN 10088-2: European standard for stainless steel sheet, plate and strip.
- worldstainless.org and the Nickel Institute: free technical guides on selecting and fabricating stainless.
Last updated: October 2026. Weights are calculated from nominal density and are for estimating. Always confirm thickness tolerances and certified properties with your supplier.
