Ferritic, magnetic, nickel-free stainless — trim, appliance panels, splashbacks. Cheaper than 304 with lower corrosion resistance and toughness.
| Property | Typical value |
|---|---|
| Density | 7700 kg/m³ |
| Yield | ≥260 MPa |
| Tensile | 450–600 MPa |
| Elongation | ≥20 % |
| Young's E | 220 GPa |
| Hardness | ≤185 HB |
| CTE | ~10.5 µm/m·K |
| Thermal cond. | ~25 W/m·K |
| Max service | ~800 °C (scaling) |
| Poisson ν | ~0.28–0.29 |
| Shear modulus G | ~85 GPa (derived) |
| Shear strength | ≈0.6 × UTS (design convention — not test data) |
| Specific heat | ~460 J/kg·K |
| Elec. resistivity | ~0.60 µΩ·m |
| Melting range | ~1425–1510 °C |
~55%. Work-hardens less than austenitics; can smear — sharp tooling.
Weldable with care — HAZ grain growth embrittles; 308L/309L filler, thin sections best.
| System | Designation |
|---|---|
| EN | X6Cr17 / 1.4016 |
| DIN | X6Cr17 / X8Cr17 |
| AISI | 430 |
| ASTM | A240 / A276 430 |
| JIS | SUS430 |
| BS | BS 970 430S17 |
| UNS | S43000 |
Equivalents & alternatives: 1.4016 (X6Cr17); AISI 430; UNS S43000. Alt: 304 (toughness/weldability), 441 (stabilised, weldable).
Free-machining austenitic stainless — fittings, shafts, fasteners where corrosion + machining matter.
Stainless steelThe workhorse austenitic stainless — food, architectural, general corrosion resistance, weldable.
Stainless steelMolybdenum-bearing austenitic — the default grade for marine, chemical and chloride environments.
