T4

  • %C 0.70-0.80
  • %Mn 0.20-0.40
  • %Si 0.20-0.40
  • %Cr 3.75-4.50
  • %Mo 0.70-1.00
  • %V 0.80-1.20
  • %W 17.25-18.75
  • %Co 4.25-5.75

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