| AISI Type 309 | |
 | |
| Category | Steel |
| Class | Stainless steel |
| Type | Austenitic standard |
| Common Names | Chromium-Nickel steel |
| Designations |
Germany: DIN 1.4828 Italy: UNI x 16 CrNi 23 14 United States: ASME SA249 , ASME SA312 , ASME SA358 , ASME SA403 , ASME SA409 , ASTM A167 , ASTM A249 , ASTM A276 , ASTM A312 , ASTM A314 , ASTM A358 , ASTM A403 , ASTM A409 , ASTM A473 , ASTM A511 , ASTM A554 , ASTM A580 , FED QQ-S-763 , FED QQ-S-766 , MIL SPEC MIL-S-862 , SAE 30309 , SAE J405 (30309) , UNS S30900 |
| Composition | |
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| Mechanical Properties | |
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| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 8 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 200 | 25 | |
| Tensile Strength (Mpa) | 515 | 25 | hot finished and annealed (wire) more |
| Yield Strength (Mpa) | 205 | ||
| Elongation (%) | 40 | ||
| Reduction in Area (%) | 50 | ||
| Hardness (HRB) | 95 (max) | 25 | annealed (plate, sheet, strip) |
| Thermal Properties | |
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| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Thermal Expansion (10-6/ºC) | 15 | 0-100 more | |
| Thermal Conductivity (W/m-K) | 15.6 | 100 more | |
| Specific Heat (J/kg-K) | 500 | 0-100 | |
| Electric Properties | |
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