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SUS431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS431

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JIS SUS431

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This page is mainly introduced the SUS431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS431,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SUS431

Steel Garde:SUS431
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Martensitic special steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SUS431FB	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	553～202	σb/MPa
Yield Strength	216	σ 0.2 ≥/MPa
Elongation	98	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	531～204	-
HRC	30	-

Physical Properties

Thermal expansion	16-68	e-6/K
Thermal conductivity	68-81	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7556-7796	째C
Density	1756-2722	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)
SUS431 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