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308 Stainless Steel Plate
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Asia Metal supplies high-purity 308 stainless steel plate engineered for critical welding applications, chemical processing equipment, and environments requiring superior corrosion resistance. 308 stainless steel (UNS S30800) is an austenitic chromium-nickel alloy with higher nickel content than 304, offering enhanced weldability, reduced risk of weld decay, and excellent resistance to intergranular corrosion. Commonly used as base material for welding overlays, filler metal substrates, and in food, pharmaceutical, and marine applications. We support full customization in thickness, dimensions, surface finish, and heat treatment — tailored to your technical drawings or specifications.
| Parameter | Standard Range | Customizable Options |
|---|---|---|
| Material Standard | UNS S30800, ASTM A240, ASME SA-240, EN 1.4301 (Close Equivalent) | Also compliant with JIS SUS308, ISO 15510 |
| Thickness | 3mm – 80mm | Yes — Precision ground to ±0.1mm tolerance |
| Width | 1000mm – 2500mm | Yes — Slit or sheared to custom width ±2mm |
| Length | 2000mm – 6000mm | Yes — Cut-to-length with ±5mm accuracy |
| Surface Finish | 2B, No.1, BA (Bright Annealed), No.4 Brushed, HL (Hairline) | Yes — Mirror polish (No.8), embossed, or anti-fingerprint |
| Edge Condition | Mill Edge, Sheared Edge, Deburred Edge | Yes — Beveled (30°/37.5°), chamfered, or radius edge |
| Delivery Time | 7–14 Days (Standard Sizes) | Custom orders: 10–25 days; Rush 5-day service for stocked grades |
| Certifications | ISO 9001, SGS, MTC (EN 10204 3.1), RoHS, REACH | Additional: PED, NACE MR0175, FDA (for food-grade finish), ASTM E140 Hardness Cert |
| Element / Property | Composition / Value | Standard Reference |
|---|---|---|
| Chromium (Cr) | 19.0–21.0% | ASTM A240 |
| Iron (Fe) | Bal. | — |
| Nickel (Ni) | 10.0–12.0% | ASTM A240 |
| Manganese (Mn) | ≤2.0% | ASTM A240 |
| Silicon (Si) | ≤1.0% | ASTM A240 |
| Carbon (C) | ≤0.08% | ASTM A240 |
| Tensile Strength | ≥515 MPa | ASTM A370 |
| Yield Strength (0.2% Offset) | ≥205 MPa | ASTM A370 |
| Elongation (50mm gauge) | ≥40% | ASTM A370 |
| Hardness (Brinell) | ≤201 HB | ASTM E10 |
A: 308 contains higher nickel (10–12% vs. 8–10.5% in 304), which improves weldability and reduces carbide precipitation in the heat-affected zone. 308 is preferred for welding dissimilar steels or as a base for 308L filler metal. 304 is more common for general fabrication.
A: Yes. While 308 is standard, we can supply 308L (UNS S30803, C≤0.03%) upon request for applications requiring maximum resistance to sensitization during welding. Certified chemistry and intergranular corrosion test reports (ASTM A262) are available.
A: Absolutely. We provide waterjet cutting, plasma profiling, CNC drilling, bending, and edge beveling. Submit your DXF, DWG, or PDF file — we’ll handle nesting, tolerancing, and packaging for direct assembly.
A: Yes. When supplied with 2B, BA, or No.4 finish and accompanied by FDA-compliant cleaning and packaging, 308 plate meets hygiene requirements for food processing, dairy, and pharmaceutical equipment. Electropolishing available for ultra-smooth surfaces.
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