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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	012～391	σb/MPa
Yield Strength	618	σ 0.2 ≥/MPa
Elongation	47	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	402～369	-
HRC	30	-

Physical Properties

Thermal expansion	95-52	e-6/K
Thermal conductivity	58-50	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6961-8422	째C
Density	9477-7506	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