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| Property | Parameter | Description |
|---|---|---|
| Product Name | Stainless Steel Flat Bar | Rectangular-section austenitic stainless steel bar for structural and fabrication use |
| Common Material Grades | 304 / 1.4301, 316 / 1.4401, 316L / 1.4404, 2205 / 1.4462 | International grade equivalents per ASTM A276 / EN 10088-3 |
| Standard Compliance | ASTM A276, EN 10088-3, JIS G4303, GB/T 1220 | Meets major global standards for stainless steel bars |
| Carbon (C) | 304: ≤0.08%; 316L: ≤0.03%; 2205: ≤0.03% | Low carbon enhances weldability and intergranular corrosion resistance |
| Chromium (Cr) | 304: 18.0–20.0%; 316: 16.0–18.0%; 2205: 22.0–23.0% | Primary element for passive film formation and corrosion resistance |
| Nickel (Ni) | 304: 8.0–10.5%; 316: 10.0–14.0%; 2205: 4.5–6.5% | Stabilizes austenite; improves toughness and ductility |
| Molybdenum (Mo) | 316/316L: 2.0–3.0%; 2205: 3.0–3.5%; 304: Not specified | Enhances pitting and crevice corrosion resistance in chloride environments |
| Tensile Strength | 304: ≥515 MPa; 316: ≥515 MPa; 2205: ≥620 MPa | Minimum tensile strength per ASTM A276 |
| Yield Strength (0.2% Offset) | 304: ≥205 MPa; 316: ≥205 MPa; 2205: ≥450 MPa | Minimum yield strength at room temperature |
| Elongation | 304/316: ≥40%; 2205: ≥25% | Ductility measured in 50 mm gauge length |
| Dimensions (Width × Thickness) | 10–300 mm × 3–100 mm | Standard hot-rolled and cold-finished sizes; custom available |
| Length | 3–6 m (standard); up to 12 m or cut-to-length | Typical mill lengths with precision cutting options |
| Surface Finish | No.1 (hot-rolled), 2B (cold-rolled), BA (bright annealed), Pickled | Finish options affect appearance, corrosion resistance, and post-processing |
| Application | Architectural cladding, machinery frames, marine fittings, food processing equipment | Key industrial uses leveraging corrosion resistance and strength |
| Certification | EN 10204 3.1, ISO 9001, MTRs available | Mill test reports and third-party quality certifications |
| Packaging | Bundled with steel strapping, edge protectors, waterproof wrapping | Export-grade packaging to prevent surface damage and moisture exposure |
| MOQ | 500 kg (standard); negotiable for long-term contracts | Minimum order quantity for stock and custom production |
Acceptable Quality 304 Flat Bar with Minor Issues Resolved
Decent product quality overall, with one issue that was resolved. We noticed slight width variation (up to +0.22 mm / −0.15 mm) on 7 of 42 pieces in our 10.2-ton order of 304 flat bar (120 mm × 30 mm, No. 1 finish) for bridge handrail brackets. The variance exceeded the ±0.1 mm tolerance stated in EN 10058. Supplier acknowledged the deviation, provided revised mill test reports with root-cause analysis (roll wear adjustment), and offered a 3% credit plus priority scheduling for our next order. Packaging remained robust. For high-tolerance structural work, recommend specifying tighter width control upfront. Overall acceptable. 3 stars due to initial tolerance nonconformance.
Decent product quality overall, with one issue that was resolved. We noticed slight width variation (up to +0.22 mm / −0.15 mm) on 7 of 42 pieces in our 10.2-ton order of 304 flat bar (120 mm × 30 mm, No. 1 finish) for bridge handrail brackets. The variance exceeded the ±0.1 mm tolerance stated in EN 10058. Supplier acknowledged the deviation, provided revised mill test reports with root-cause analysis (roll wear adjustment), and offered a 3% credit plus priority scheduling for our next order. Packaging remained robust. For high-tolerance structural work, recommend specifying tighter width control upfront. Overall acceptable. 3 stars due to initial tolerance nonconformance.
