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Metal Alloys |
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| AISI 4145 | |
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| Category | Steel |
| Class | Alloy steel |
| Type | Standard |
| Common Names | Chromium-molybdenum steel |
| Designations | United States: ASTM A322 , ASTM A331 , ASTM A505 , ASTM A519 , MIL SPEC MIL-S-16974 , SAE J404 , SAE J412 , SAE J770 , UNS G41450 |
| Composition | |
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| Element | Weight % |
| C | 0.43-0.48 |
| Mn | 0.75-1.00 |
| P | 0.035 (max) |
| S | 0.04 (max) |
| Si | 0.15-0.30 |
| Cr | 0.80-1.10 |
| Mo | 0.15-0.25 |
| Mechanical Properties | |
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