T4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T4

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ASTM T4

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This page is mainly introduced the T4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
T4
  • Steel Garde:T4
  • Type:Special Alloy
  • Country:USA
  • Standard:ASTM
  • Application:Tungsten series High-Speed Tool Steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 264~624 σb/MPa
Yield Strength 212 σ 0.2 ≥/MPa
Elongation 00 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 899~849 -
HRC 30 -

Physical Properties

Thermal expansion 44-92 e-6/K
Thermal conductivity 00-65 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 2800-9197 째C
Density 9482-7762 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)
T4 Special Alloy 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

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