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 M2M3M4M7M42PM M4PM T15PM A11PM M48PM 23 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 602.34.26.576.510.534067
PM A112.455.25.5 max1.39.75.5 max25563

NOBODY STOCKS MORE HIGH SPEED STEEL THAN GRIGGS