SUS631 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS631

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JIS SUS631

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This page is mainly introduced the SUS631 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS631,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SUS631
  • Steel Garde:SUS631
  • Type:Special Alloy
  • Country:Japan
  • Standard:JIS
  • Application:precipitation-hardening stainless

Cross Reference Table(Equivalent Materials):

Material Standard Country
SUS631-CPS JIS Japan

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 867~323 σb/MPa
Yield Strength 156 σ 0.2 ≥/MPa
Elongation 28 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 777~321 -
HRC 30 -

Physical Properties

Thermal expansion 89-52 e-6/K
Thermal conductivity 96-82 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3299-0970 째C
Density 4058-9736 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)
SUS631 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