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 865~263 σb/MPa
Yield Strength 179 σ 0.2 ≥/MPa
Elongation 49 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 753~837 -
HRC 30 -

Physical Properties

Thermal expansion 54-89 e-6/K
Thermal conductivity 87-44 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8402-0579 째C
Density 0000-5151 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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