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Metal Alloys |
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Alloy Home |
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Steels |
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Tool Steels |
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Tool Steel List |
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Specific Tool Steel |
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General Information |
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Resources |
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Bibliography |
| AISI M4 | |
 | |
| Category | Steel |
| Class | Tool steel |
| Type | Molybdenum high speed steel |
| Designations | United States: ASTM A600 , FED QQ-T-590 , SAE J437 , SAE J438 , UNS T11304 |
| Composition | |
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| Element | Weight % |
| C | 1.25-1.40 |
| Mn | 0.15-0.40 |
| Si | 0.20-0.45 |
| Cr | 3.75-4.75 |
| Ni | 0.3 |
| Mo | 4.25-5.50 |
| W | 5.25-6.50 |
| V | 3.75-4.50 |
| Cu | 0.25 |
| P | 0.03 |
| S | 0.03 |
| Mechanical Properties | |
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| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 7.97 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 190-210 | 25 | |
| Thermal Properties | |
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