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Help CenterStainless Steel Sheet 304/316/321 ASTM A240 JIS G4305 Thickness 1-50mm
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Stainless Steel Sheet 304/316/321 – ASTM A240 & JIS G4305
Our stainless steel sheets are manufactured to ASTM A240 and JIS G4305 standards, available in grades 304, 316, and 321. Thickness ranges from 1mm to 50mm, with standard sizes or custom cutting as required. Surface finishes include 2B, BA, No.1, and No.4.
Grade 304 offers excellent general corrosion resistance for food and chemical applications. Grade 316 adds molybdenum for superior pitting resistance in marine and chloride environments. Grade 321 is stabilized with titanium, providing good high-temperature performance up to 900°C, ideal for exhaust systems and thermal equipment.
Typical applications: pressure vessels, heat exchangers, chemical storage tanks, food processing equipment, pharmaceutical plants, marine structures, and architectural panels.
Each batch includes EN 10204 3.1 mill test certificate. MOQ 100 kg, sample orders welcome.
Parameter |
Specification / Range |
Remarks |
Standards |
ASTM A240, A480, EN 100882, JIS G4304/4305, GB/T 3280 |
Others (e.g. DIN, BS) on request |
Common Grades |
304, 304L, 316, 316L, 321, 309S, 310S, 430, 201, 202, 904L, 2205, 2507 |
Duplex & super austenitic available |
Thickness range |
Cold rolled: 0.3mm – 6.0mm; Hot rolled: 3.0mm – 120mm |
Custom on request |
Width range |
Cold rolled: 1000 / 1219 / 1500 mm (max 2000mm); Hot rolled: 1500 – 3000 mm |
Slitting / trimming available |
Length range |
Cold rolled: 2000 – 6000 mm; Hot rolled: 3000 – 12000 mm |
Custom cut to length |
Surface finish |
2B, BA, No.1, HL (hairline), No.4, mirror (8K), embossed, colored |
Pickled & annealed for hot rolled |
Tolerances – thickness |
Cold rolled: ±0.03mm to ±0.08mm (depending on thickness) |
Per ASTM A480 |
Tolerances – width/length |
±2mm (sheared), ±1mm (slit) |
Laser/plasma ±0.5mm |
Flatness |
≤3mm/m for cold rolled; ≤5mm/m for hot rolled (standard) |
Leveling service available |
Mechanical properties (typical – 304) |
Tensile strength ≥515 MPa; Yield ≥205 MPa; Elongation ≥40% |
Varies by grade & temper |
Hardness (304/316) |
≤200 HB; ≤92 HRB |
Annealed condition |
Density |
7.93 g/cm³ (304/316); 7.70 g/cm³ (430) |
– |
Surface protection |
Interleaving paper + PE film on one or both sides |
Optional |
Q1：Do you offer sample orders？
A：Yes, samples are available for quality evaluation. Sample cost is charged but refundable upon bulk order.
Q2：What is your MOQ？
A：Our standard MOQ is 100 kg per specification. For common grades and standard sizes, we accept small batch orders. Mixed orders for different products are also welcome.
Q3：Can you provide custom sizes？
A：Yes, we can produce any length, width, thickness, or diameter based on your drawings. Cutting, slitting, and other processing services are available with tolerance as required.
Q4：What certifications do you provide？
A：Each shipment comes with EN 10204 3.1 mill test certificate (MTC). Third-party inspection reports (SGS/BV/TÜV) can be arranged upon request.
Q5：What is your lead time？
A：7–15 working days for stock items. 20–30 days for custom orders, depending on quantity and specification.
Q6：What surface treatments are available？
A：Various surface treatments are available upon request, including pickled, polished, coated, oiled, or as required.
Q7：What payment terms do you accept？
A：T/T (30% deposit + 70% against BL copy), L/C at sight, Western Union, etc.
Q8：What about packaging for export？
A：Standard seaworthy packaging with waterproof protection, steel straps, corner protectors, and ISPM 15 fumigation certification. Custom packaging is available as required.
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