Molybdenum-bearing austenitic — the default grade for marine, chemical and chloride environments.
| Property | Typical value |
|---|---|
| Density | 8000 kg/m³ |
| Yield | ~220 MPa |
| Tensile | 500–700 MPa |
| Elongation | ~45 % |
| Young's E | 193 GPa |
| Hardness | ~217 HB |
| CTE | ~16 µm/m·K |
| Thermal cond. | ~16 W/m·K |
| Max service | ~870 °C |
| Poisson ν | ~0.29–0.30 |
| Shear modulus G | ~75 GPa (derived) |
| Shear strength | ≈0.6 × UTS (design convention — not test data) |
| Specific heat | ~500 J/kg·K |
| Elec. resistivity | ~0.75 µΩ·m |
| Melting range | ~1370–1400 °C |
| Fatigue (indicative) | ~175–245 MPa at 10⁷ (≈0.35 × UTS, annealed) — rotating-bend, polished specimen; indicative only, surface/size/loading factors apply |
~36%. Tougher than 304; carbide, positive rake, flood coolant.
Weldable all processes; 316L filler; best chloride/pitting resistance of the common grades.
| System | Designation |
|---|---|
| EN | X5CrNiMo17-12-2 / 1.4401 (316L: X2CrNiMo17-12-2 / 1.4404) |
| DIN | X5CrNiMo17-12-2 / 1.4401 |
| AISI | 316 / 316L |
| ASTM | A240 / A276 316 |
| JIS | SUS316 / SUS316L |
| BS | BS 970 316S31 (316L: 316S11) |
| UNS | S31600 / S31603 |
Equivalents & alternatives: 1.4401/1.4404; AISI 316/316L; UNS S31600; A4 (fastener). Alt: 304 (lower cost, non-marine), duplex 2205 (higher strength).
Free-machining austenitic stainless — fittings, shafts, fasteners where corrosion + machining matter.
Stainless steelThe workhorse austenitic stainless — food, architectural, general corrosion resistance, weldable.
Stainless steelFerritic, magnetic, nickel-free stainless — trim, appliance panels, splashbacks. Cheaper than 304 with lower corrosion resistance and toughness.
