BT1 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of BT1

Location » Home » Grades > Tool Die Steels > BT1

B.S. BT1

Profile

This page is mainly introduced the BT1 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of BT1,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
W series high speed steel
  • Steel Garde:BT1
  • Type:Tool Die Steels
  • Country:UK
  • Standard:B.S.
  • Standard Number:
    ITEM Standard Number Descriptions
    1 BS 4659 High speed tool steel
  • Application:W series high speed steel

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.70  0.80
Si   0.40
Mn   0.40
Co   1.00
Cr 3.75  4.50
Mo   0.70
Ni   0.40
V 1.00  1.25
W 17.5  18.5
Cu   0.20
Sn   0.05

Mechanical Properties

Tensile strength 406~790 σb/MPa
Yield Strength 861 σ 0.2 ≥/MPa
Elongation 41 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 068~613 -
HRC 30 -

Physical Properties

Thermal expansion 44-12 e-6/K
Thermal conductivity 68-21 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 0340-6303 째C
Density 3451-8195 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
BT1 Tool Die Steels Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download

Hot keywords:BT1
Previous: 35CrMo8
Next: 26NiCrMoV14-5