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SUH 661 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUH 661

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JIS SUH 661

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This page is mainly introduced the SUH 661 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUH 661,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:SUH 661
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:Austenite
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
SUH 661	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.08	0.16
Si		1.00
Mn	1.00	2.00
P		0.04
S		0.03
Cr	20.00	22.50
Ni	19.00	21.00
Mo	2.50	3.50
W	2.00	3.00
Co	18.50	21.00
Nb	0.75	1.25
N	0.10	0.20

Mechanical Properties

Tensile strength	438～477	σb/MPa
Yield Strength	712	σ 0.2 ≥/MPa
Elongation	56	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	145～640	-
HRC	30	-

Physical Properties

Thermal expansion	55-75	e-6/K
Thermal conductivity	59-62	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2172-8009	째C
Density	5448-1409	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)
SUH 661 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