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SUS 631 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS 631

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JIS SUS 631

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This page is mainly introduced the SUS 631 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS 631,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 631
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:Precipitation-Hardening
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 631	JIS	Japan
SUS 631	JIS	Japan
SUS 631	JIS	Japan
SUS 631	JIS	Japan
SUS 631 J1	JIS	Japan
SUS 631 J1	JIS	Japan
SUS 631-CSP	JIS	Japan
SUS 631J1-WPC	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.09
Si		1.00
Mn		1.00
P		0.04
S		0.03
Cr	16.00	18.00
Ni	6.50	7.75
Mo
N
Al	0.75	1.50

Mechanical Properties

Tensile strength	614～738	σb/MPa
Yield Strength	370	σ 0.2 ≥/MPa
Elongation	47	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	363～212	-
HRC	30	-

Physical Properties

Thermal expansion	73-19	e-6/K
Thermal conductivity	88-56	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0229-1125	째C
Density	0673-4135	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 631 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