A8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A8

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ASTM A8

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This page is mainly introduced the A8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
A8
  • Steel Garde:A8
  • Type:Special Alloy
  • Country:USA
  • Standard:ASTM
  • Application:Alloy tool steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
H10 ASTM USA
CA85T AS Australia

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 806~069 σb/MPa
Yield Strength 993 σ 0.2 ≥/MPa
Elongation 08 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 443~447 -
HRC 30 -

Physical Properties

Thermal expansion 67-89 e-6/K
Thermal conductivity 42-39 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 7776-4610 째C
Density 3861-7675 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)
A8 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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