ASTM634 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ASTM634

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ASTM ASTM634

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This page is mainly introduced the ASTM634 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ASTM634,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ASTM634
  • Steel Garde:ASTM634
  • Type:Stainless Steels & Special Steels
  • Country:USA
  • Standard:ASTM
  • Application:ASTM634

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤)
C 0.10  0.15
Si   0.50
Mn 0.50  1.25
P   0.04
S   0.03
Cr 15.0  16.0
Ni 4.00  5.00
Mo 2.50  3.25
N 0.07  0.13

Mechanical Properties

Tensile strength 192~235 σb/MPa
Yield Strength 829 σ 0.2 ≥/MPa
Elongation 80 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 725~725 -
HRC 30 -

Physical Properties

Thermal expansion 95-85 e-6/K
Thermal conductivity 12-20 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1996-2831 째C
Density 9963-5805 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)
ASTM634 Stainless Steels & Special 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

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