Material Overview & Specifications
Grade 304 (UNS S30400 / 1.4301) is the quintessential austenitic chromium-nickel stainless steel, renowned for exceptional weldability, deep-drawing capability, and resistance to atmospheric oxidation and mild chemical media. Grade 304L (UNS S30403 / 1.4307) features an ultra-low carbon chemistry (C ≤ 0.030%) that eliminates harmful chromium carbide precipitation during welding, making it the preferred specification for heavy-gauge architectural, pharmaceutical, and chemical process equipment without requiring post-weld annealing.
All our stainless steel 304 sheets and plates conform rigorously to ASTM A240 / ASME SA240 standards. We offer versatile surface finishes including Cold Rolled 2B, No.4 Hairline brush with PVC laser protection film, Scotch-Brite, BA (Bright Annealed), and Hot Rolled No.1 pickled finish for heavy structural applications. Our in-house computerized shear and high-precision fiber laser cutting machinery allow us to provide cut-to-size blanks, strips, and circles within a tight dimensional tolerance of ±0.5 mm.
Whether your project requires single prototype sheets or multi-container export consignments, Tatvam Overseas Inc delivers complete material traceability. Every single shipment is backed by an authentic Mill Test Certificate conforming to EN 10204 Type 3.1, verifying exact heat numbers, optical emission spectrometry chemical analysis, and mechanical tensile tests.
Technical Specifications
| Standard Specifications | ASTM A240 / ASME SA240, EN 10088-2, JIS G4304 |
| Material Grades | AISI 304 (UNS S30400, 1.4301), AISI 304L (UNS S30403, 1.4307) |
| Thickness Range | 0.5 mm to 50.0 mm (CR & HR Sheets / Plates) |
| Widths Available | 1000 mm, 1250 mm, 1500 mm, 2000 mm, custom slitting |
| Lengths Available | 2000 mm, 2500 mm, 3000 mm, 6000 mm, cut-to-length |
| Surface Finishes | 2B, BA, No.4 Hairline (PVC / Laser Coated), No.1 Pickled, Mirror 8K |
| Primary Mill Origins | Jindal Stainless (JSL), POSCO, Acerinox, Outokumpu |
| Testing & MTC | EN 10204 3.1 MTC, PMI Tested, NABL Lab Certified |
Supply & Logistics Capabilities
Minimum Order (MOQ)
500 kg for ready warehouse stock. Custom rolling lots and project consignments from 1 to 5 metric tons.
MTC & Traceability
EN 10204 Type 3.1 Inspection Certificate with 100% heat number correlation and optical emission chemical analysis.
Third-Party Inspection
Coordination with TUV, DNV, SGS, Bureau Veritas, and Lloyds Register for independent physical and dimensional witness.
Custom Processing
In-house CNC laser cutting, waterjet profiling, shearing, plate beveling, and pipe band saw cutting within 48 hours.
Frequently Asked Questions
What is the difference between SS 304 and SS 304L plates? ↓
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Get Custom Quotation
Share your required sizes, thickness, schedule, and quantity for immediate wholesale pricing within 2-4 business hours.
Engineering Resources
Calculate theoretical weights or verify EN 10204 3.1 inspection certificate formatting with our online tools.