304 Stainless Steel Sheet 200×300mm — Precision-Cut Foil & Plate for DIY and Fabrication
When your project demands a flat, dimensionally consistent metal sheet that won't rust, warp, or corrode under everyday conditions, finding the right thickness in a ready-to-use size is often the bottleneck. Hobbyists, makers, and repair technicians who work with small-format metal parts know the frustration of ordering stock that's too thick to bend or too thin to hold a load. This 304 stainless steel sheet is stocked in 16 thicknesses — from ultra-thin 0.02mm foil to a rigid 0.4mm plate — so you can match the material to the job rather than compromise.
Each sheet measures 200mm × 300mm (approximately 7.87 in × 11.81 in) and is cut from 304-grade austenitic stainless steel. The 304 alloy contains 18% chromium and 8% nickel, giving it a bright, mill-finish surface and solid resistance to oxidation in most indoor and light outdoor environments. Thickness options span 0.02mm, 0.025mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.09mm, 0.10mm, 0.12mm, 0.15mm, 0.18mm, 0.20mm, 0.25mm, 0.30mm, and 0.40mm. Quantity packs of 1, 2, 3, 5, or 10 pieces are available per variant.
Typical use cases include shimming and gap-filling in mechanical assemblies, crafting custom gaskets or heat shields, producing thin decorative inlays for woodworking, and prototyping enclosures or brackets where a laser-cuttable stainless steel sheet blank is needed. The 200×300mm format also suits small CNC routing and etching workflows where a manageable sheet size reduces material waste.
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Compatibility note: These sheets are uncoated 304 stainless steel and are compatible with standard metal-cutting tools including tin snips, angle grinders, laser cutters, and CNC routers. Thinner gauges (≤0.05mm) can be scored and folded by hand with a straight edge.
✅ Key Features of These 304 Stainless Steel Sheets
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16 Thickness Options in One Listing
Choose from 0.02mm foil-thin to 0.4mm rigid plate — all in the same 200×300mm footprint, so you can order exactly what your project requires without buying oversized stock.
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304-Grade Corrosion Resistance
The 18-8 chromium-nickel composition forms a passive oxide layer that resists rust in humid, mildly acidic, and food-contact environments — no additional coating required for most indoor applications.
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Machinable with Common Shop Tools
Cuts cleanly with tin snips, angle grinders, laser cutters, and CNC routers. Thinner variants (≤0.05mm) can be scored and bent by hand, while thicker variants (≥0.2mm) hold their shape under moderate forming pressure.
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Flexible Quantity Packs
Available in packs of 1, 2, 3, 5, or 10 pieces per order. Stock up for production runs or grab a single sheet for a one-off repair — pricing scales with quantity.
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Consistent Mill-Finish Surface
Sheets arrive with a uniform 2B-style mill finish — flat, smooth, and free of deep scratches — suitable for further polishing, etching, or use as-is in structural and decorative applications.
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Precise Dimensional Tolerances
The 200×300mm cut size and stated thickness are held to tight tolerances, making these sheets reliable for shimming, gasket cutting, and other applications where dimensional accuracy matters.
📐 Technical Specifications — Stainless Steel Sheet
| Material Grade |
304 Stainless Steel (18-8 Cr-Ni alloy) |
| Sheet Dimensions |
200mm × 300mm (7.87 in × 11.81 in) |
| Thickness Range |
0.02mm – 0.40mm (16 options; see variant selector) |
| Surface Finish |
Mill finish (2B-style), uncoated |
| Quantity per Pack |
1 / 2 / 3 / 5 / 10 pieces (see variant selector) |
| Tensile Strength (typical) |
515 MPa (74,700 psi) |
| Yield Strength (typical) |
205 MPa (29,700 psi) |
| Hardness |
Typically 70–90 HRB (annealed condition) |
| Magnetic Properties |
Non-magnetic in annealed state |
| Max Continuous Service Temp. |
Typically up to 870°C (1,600°F) in air |
| Application |
Shimming, gaskets, heat shields, prototyping, decorative inlays, CNC blanks |
❓ Frequently Asked Questions
How do I choose the right thickness for my project?
For shimming and gap-filling, match the thickness to the measured gap — thicknesses from 0.02mm to 0.1mm cover most precision shimming needs. For structural brackets or heat shields that need to hold their shape under load, 0.2mm–0.4mm is a more practical range. If you need to bend or form the sheet by hand, stay at 0.05mm or thinner; thicker gauges require a brake or bending jig.
Is 304 stainless steel strong enough for load-bearing applications?
304 stainless steel has a typical tensile strength of around 515 MPa and a yield strength of approximately 205 MPa, which is adequate for light-to-medium structural uses such as brackets, clips, and reinforcement plates. For heavy load-bearing or high-stress applications, consult an engineer to confirm the gauge and alloy are appropriate for your specific load case.
Will these sheets rust or corrode outdoors?
304 stainless steel performs well in most indoor and sheltered outdoor environments. It resists rust in humid conditions and mild chemical exposure. However, in coastal or marine environments with prolonged salt-spray exposure, or in contact with strong chlorides, surface staining or pitting can occur over time. For harsh outdoor or marine use, 316-grade stainless steel is generally recommended instead.
Can I cut these sheets with a laser cutter or CNC router?
Yes. The 200×300mm format is a common working size for desktop and benchtop laser cutters and CNC routers. Thinner gauges (0.02mm–0.1mm) cut cleanly with fiber laser systems and can also be cut with sharp tin snips or a craft knife and straight edge. Thicker gauges (0.2mm–0.4mm) are better suited to angle grinders, metal-cutting circular saws, or higher-powered laser systems. Always use appropriate PPE when cutting metal.
Are the sheets magnetic?
In their annealed (as-supplied) condition, 304 stainless steel sheets are generally non-magnetic or very weakly magnetic. Cold working — such as bending, cutting, or forming — can induce a small degree of magnetism in the material. If your application requires strictly non-magnetic material, test a sample after any forming operations.
What is the difference between the thin foil variants and the thicker plate variants?
The ultra-thin variants (0.02mm–0.05mm) behave more like a metallic foil — flexible, lightweight, and easy to cut or fold by hand. They are ideal for gaskets, shims, decorative overlays, and heat-barrier applications. The mid-range variants (0.06mm–0.15mm) offer a balance of flexibility and rigidity. The thicker variants (0.18mm–0.4mm) are rigid plates that hold their shape under moderate mechanical stress and are better suited to structural, protective, or load-distributing uses.
Can I weld or solder these sheets?
304 stainless steel is weldable using TIG, MIG, and spot-welding processes. Thinner gauges require careful heat management to avoid warping or burn-through. Soldering is possible with appropriate stainless-steel flux, though the bond strength is lower than welding. For thin foil variants, adhesive bonding or mechanical fastening is often a more practical joining method.
🛒 Select your thickness and quantity above, then add to cart.
