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Depending on the application, cutting tools are manufactured using different grades of HSS.
The work material, its hardness, the machine tool used, part configuration, finish required on the
Components and volume of components to be produced are the few requirements that influence
Selection of different grades of HSS for manufacture of cutting tools
Chemical composition of some grades of High-Speed Steels normally used is given below :
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CHEMICAL COMPOSITION
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C
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Cr
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Mo
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W
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V
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Co
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M2
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0.86/0.96
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3.8/4.5
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4.9/5.5
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6.0/6.75
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1.7/2.2
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Nil
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M35
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0.88/0.96
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3.8/4.5
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4.9/5.5
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6.0/6.75
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1.7/2.2
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4.5/5.2
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M42
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1.05/1.15
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3.5/4.5
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9.0/10.0
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1.3/2.0
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1.0/1.03
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7.75/8.2
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T42
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1.25/1.35
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3.5/4.5
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3.2/4.0
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9.5/10.7
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2.8/3.5
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9.7/10.2
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| C - Carbon |
Cr - Chromium |
Mo - Molybdenum |
| W - Tungsten |
Co - Cobalt |
V - Vanadium |
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