| AISI Type 304HN | |
 | |
| Category | Steel |
| Class | Stainless steel |
| Type | Austenitic nonstandard |
| Common Names | Chromium-Nickel steel |
| Designations | United States: ASME SA240 (XM-21) , ASTM A240 , ASTM A240 (XM-21) , ASTM A276 (XM-21) , SAE 30304HN , UNS S30452 |
| Composition | |
| |
| Mechanical Properties | |
| |
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 7.7-8.03 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 190-210 | 25 | |
| Tensile Strength (Mpa) | 620 | 25 | annealed (plate) more |
| Yield Strength (Mpa) | 345 | ||
| Elongation (%) | 30 | ||
| Reduction in Area (%) | 50 | ||
| Hardness (HRB) | 100 (max) | 25 | annealed (sheet, strip) more |
