Tool Die Steels BT1, BT1, W series high speed steel to BS 4659

BT1 Tool Die Steels Properties Data

Chemical Composition of steel BT1 Tool Die Steels: BS 4659 ,Cross Reference

BT1 Tool Die Steels Applications and Specifications

W series high speed steel

  • BS 4659 - High speed tool steel

Mechanical properties at room temperature for BT1 Tool Die Steels: BS 4659

Tensile Strength,Rm(MPa)

Yield Strength,Rp 0.2(MPa)



Reduction of area,(%)


Product shapes we supply:

Cross Reference, Equivalent, Similar of BT1 Tool Die Steels grade:


Conditions & Properties

  • +A Soft annealed
  • +AC Annealed to achieve spheroidization of the carbides
  • +QT Quenched and tempered
  • +WW Warm worked
  • +N Normalized
  • +NT Normalized and tempered
  • +AT Solution annealed
  • +C Cold drawn / Hard
  • +CR Cold rolled
  • +PE Peeled
  • +T Tempered