Home Stainless Steel Datasheet
| Property / Feature | 304 | 316 | 316L | 420 | 430 | 202 |
|---|---|---|---|---|---|---|
| Type | Austenitic | Austenitic | Austenitic | Martensitic | Ferritic | Austenitic |
| Composition (Typical %) | C ≤0.08, Cr 18–20, Ni 8–10.5 | C ≤0.08, Cr 16–18, Ni 10–14, Mo 2–3 | C ≤0.03, Cr 16–18, Ni 10–14, Mo 2–3 | C 0.15–0.40, Cr 12–14 | C ≤0.12, Cr 16–18 | C 0.15, Cr 16–18, Ni 3.5–5.5, Mn 5.5–7.5 |
| Density (g/cm³) | 8.0 | 8.0 | 8.0 | 7.7 | 7.7 | 7.9 |
| Melting Point (°C) | 1400–1450 | 1375–1400 | 1375–1400 | 1400 | 1425–1510 | 1400–1450 |
| Tensile Strength (MPa) | 520–750 | 515–690 | 485–620 | 450–750 | 450–600 | 520–720 |
| Yield Strength (MPa) | 205–310 | 205–275 | 170–205 | 275–450 | 275–450 | 205–310 |
| Elongation (%) | 40–60 | 40 | 40 | 15–30 | 20–30 | 30–45 |
| Hardness (HB / HRC) | 150–200 HB | 150–200 HB | 150–200 HB | 48–55 HRC | 179–217 HB | 150–200 HB |
| Corrosion Resistance | Excellent | Excellent (superior to 304) | Excellent (better for welding & low carbon) | Good (susceptible to rust if untreated) | Good (resistant to mild corrosion) | Good (general corrosion, lower than 304) |
| Workability / Fabrication | Excellent; easily welded, formed, machined | Good; slightly harder to machine than 304 | Excellent; low carbon reduces carbide precipitation | Moderate; can be hardened via heat treatment | Good; ductile but limited welding | Good; ductile, machinable |
| Magnetic Properties | Non-magnetic (austenitic) | Non-magnetic | Non-magnetic | Magnetic | Magnetic | Slightly magnetic |
| Slightly magnetic | Kitchen equipment, architectural, chemical, food industry | Marine, chemical, pharmaceutical, food equipment | Marine & chemical industry (welded structures) | Cutlery, surgical instruments, valves, knives | Automotive trim, kitchenware, appliances | Decorative panels, sinks, kitchenware, furniture |
| Heat Resistance (°C) | Up to 870 °C intermittently | Up to 870 °C intermittently | Up to 870 °C | Up to 600 °C | Up to 815 °C | Up to 800 °C |
| Surface Finish | Mill, polished, brushed | Mill, polished, brushed | Mill, polished, brushed | Polished, ground | Polished, brushed | Mill, brushed, polished |