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AISI Type 440B |
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| Category | Steel |
| Class | Stainless steel |
| Type | Martensitic standard |
| Common Names | Chromium steel |
| Designations |
Germany: DIN 1.4112
Japan: JIS SUS 440 B
United States: ASTM A276 , ASTM A314 , ASTM A473 , ASTM A580 , FED QQ-S-763 , MIL SPEC MIL-S-862 , SAE 51440B , SAE J405 (51440B) , UNS S44003
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| Composition |
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| Element | Weight % |
| C |
0.75-0.95 |
| Mn |
1.00 |
| Si |
1.00 |
| Cr |
16.0-18.0 |
| P |
0.04 |
| S |
0.03 |
| Mo |
0.75 |
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| Mechanical Properties |
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| Properties | Conditions |
| T (°C) | Treatment |
| Density (×1000 kg/m3) |
7.7-8.03
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25 |
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| Poisson's Ratio |
0.27-0.30 |
25 |
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| Elastic Modulus (GPa) |
190-210
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25 |
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| Tensile Strength (Mpa) |
965 |
25 |
annealed, cold finished (bar) more |
| Yield Strength (Mpa) |
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| Elongation (%) |
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| Reduction in Area (%) |
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| Hardness (HRB) |
96 |
25 |
annealed (bar) more |
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