ASTM 634 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ASTM 634

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ASTM ASTM 634

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This page is mainly introduced the ASTM 634 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ASTM 634,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ASTM 634
  • Steel Garde:ASTM 634
  • Type:Special Alloy
  • Country:USA
  • Standard:ASTM
  • Application:precipitation hardening

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 442~388 σb/MPa
Yield Strength 988 σ 0.2 ≥/MPa
Elongation 70 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 703~980 -
HRC 30 -

Physical Properties

Thermal expansion 61-80 e-6/K
Thermal conductivity 16-68 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 0891-0222 째C
Density 2597-9113 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)
ASTM 634 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