Chemical Composition

The chart below shows the typical chemical composition and hardness of our high-speed tool steels. You will find this broken down by our different grades of M2, M4, M7, M42, PM M4, PM T15, PM A11, PM M48, PM 23, PM 30 and PM 60. Click on the individual grade for a complete data sheet of each.

HIGH SPEED TOOL STEEL
(CHEMISTRY OF CONVENTIONAL MATERIAL TO ASTM A600 SPECIFICATIONS)
TypeTYPICAL CHEMICAL COMPOSITION (%)HARDNESS
MaximumTypical
CarbonChromiumTungstenMolybdenumVanadiumCobaltAnnealedTempered
CCrWMoVCoHbHrC
M20.834.156.155.11.95-25564
M31.054.156.155.752.5-25566
M41.34.255.854.754.1-25565
M71.023.81.88.61.9-26064
M421.13.91.69.51.28.2527767
PM M41.445.655.24-25565
PM T151.6412.25-4.9527566
PM M481.53.759.755.253.18.531068
PM 231.2846.453.1-26064
PM 301.254.26.453.18.526065
PM 602.34.26.576.510.534067
PM A112.455.25.5 max1.39.75.5 max25563
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