| AISI Type 321 | |
 | |
| Category | Steel |
| Class | Stainless steel |
| Type | Austenitic standard |
| Common Names | Chromium-Nickel steel |
| Designations |
France: AFNOR Z 6 CNT 18.10 Germany: DIN 1.4641 Italy: UNI ICL 472 T , UNI KG , UNI KT , UNI KW , UNI X 6 CrNiTi 18 11 Japan: JIS SUS 321 Sweden: SS 2337 United Kingdom: B.S. 321 S 12 , B.S. 321 S 18 , B.S. 321 S 22 , B.S. 321 S 27 , B.S. 321 S 40 , B.S. 321 S 49 , B.S. 321 S 50 , B.S. 321 S 59 , B.S. 321 S 87 , B.S. CDS-20 , B.S. En. 58 B , B.S. En. 58 C United States: AMS 5510 , AMS 5557 , AMS 5559 , AMS 5570 , AMS 5576 , AMS 5645 , AMS 5689 , ASME SA182 , ASME SA193 , ASME SA194 , ASME SA213 , ASME SA240 , ASME SA249 , ASME SA312 , ASME SA320 , ASME SA358 , ASME SA376 , ASME SA403 , ASME SA409 , ASME SA430 , ASME SA479 , ASTM A167 , ASTM A182 , ASTM A193 , ASTM A194 , ASTM A213 , ASTM A240 , ASTM A249 , ASTM A269 , ASTM A271 , ASTM A276 , ASTM A312 , ASTM A314 , ASTM A320 , ASTM A358 , ASTM A376 , ASTM A403 , ASTM A409 , ASTM A430 , ASTM A473 , ASTM A479 , ASTM A493 , ASTM A511 , ASTM A580 , FED QQ-S-763 , FED QQ-S-766 , FED QQ-W-423 , MIL SPEC MIL-S-862 , SAE 30321 , SAE J405 (30321) , UNS S32100 |
| 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) | 193 | 25 | |
| Tensile Strength (Mpa) | 515 | 25 | hot finished and annealed (wire) more |
| Yield Strength (Mpa) | 205 | ||
| Elongation (%) | 40 | ||
| Reduction in Area (%) | 50 | ||
| Hardness (HRB) | 88 (max) | 25 | annealed (plate, sheet, strip) |
| Thermal Properties | |
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| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Thermal Expansion (10-6/ºC) | 16.6 | 0-100 more | |
| Thermal Conductivity (W/m-K) | 16.1 | 100 more | |
| Specific Heat (J/kg-K) | 500 | 0-100 | |
| Electric Properties | |
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