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AISI M42 |
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| Category | Steel |
| Class | Tool steel |
| Type | Molybdenum high speed steel |
| Designations |
France: AFNOR 07-05-04-04-02
Germany: DIN 1.3246
United States: ASTM A600 , FED QQ-T-590 , UNS T11342
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| Composition |
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| Element | Weight % |
| C |
1.05-1.15 |
| Mn |
0.15-0.40 |
| Si |
0.15-0.65 |
| Cr |
3.50-4.25 |
| Ni |
0.3 |
| Mo |
9.00-10.00 |
| W |
1.15-1.85 |
| V |
0.95-1.35 |
| Co |
7.75-8.75 |
| Cu |
0.25 |
| P |
0.03 |
| S |
0.03 |
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| Mechanical Properties |
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| Properties | Conditions |
| T (°C) | Treatment |
| Density (×1000 kg/m3) |
7.98 |
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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