| AISI Type 420F | |
 | |
| Category | Steel |
| Class | Stainless steel |
| Type | Martensitic standard |
| Common Names | Chromium steel |
| Designations | United States: AMS 5620 , SAE 51420F , SAE J405 (51420F) , UNS S42020 |
| Composition | |
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| Mechanical Properties | |
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| 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) | 760 | 25 | annealed and cold drawn (bar) more |
| Yield Strength (Mpa) | 690 | ||
| Elongation (%) | 14 | ||
| Reduction in Area (%) | 40 | ||
| Hardness (HB) | 228 | 25 | annealed and cold drawn (bar) more |
| Thermal Properties | |
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