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SUS 431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS 431

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JIS SUS 431

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This page is mainly introduced the SUS 431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS 431,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Heat-resisting steel bars and wire rods

Steel Garde:SUS 431
Type:Stainless Steels
Country:Japan
Standard:JIS
Standard Number:

ITEM Standard Number Descriptions

1 G 4311 (2011) Heat-resisting steel bars and wire rods
Metallographic Structure:Martensite
Application:Heat-resisting steel bars and wire rods

ITEM	Standard Number	Descriptions
1	G 4311 (2011)	Heat-resisting steel bars and wire rods

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SUS 431	JIS	Japan
SUS 431	JIS	Japan
SUS 431 FB	JIS	Japan
SUS 431FB	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.20
Si		1.00
Mn		1.00
P		0.04
S		0.03
Cr	15.00	17.00
Ni	1.25	2.50
Mo
N

Mechanical Properties

Tensile strength	523～377	σb/MPa
Yield Strength	302	σ 0.2 ≥/MPa
Elongation	92	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	355～557	-
HRC	30	-

Physical Properties

Thermal expansion	23-58	e-6/K
Thermal conductivity	94-70	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6797-4826	째C
Density	3698-2717	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)
SUS 431 Stainless 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