660

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#660

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660 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 660

Category	Type	Steel Grade
Steel Grades	High Alloy	660
		S35000
		634
		S35500
		635
		650
		651
		S63198
		652
		S63199
		653

Chemical composition(mass fraction)(wt.%) of the 660

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.05	0.60	1.45			14.75	25.20
Mo	Al	Cu	Nb	Ti	V	Ce
1.30	0.22			2.15	0.28
N	Co	Pb	B	Other	Approximate rnumbe
			0.004	Fe...	A-286

Mechanical Properties of steel grade 660

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
271 (≥)	679 (≥)	23	21	34	Solution and Aging, Annealing, Ausaging, Q+T,etc	131

Physical Properties of steel grade 660

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
41	-	-			0.21	-
173	193	-	11.3	334		-
653	-	41	23.2			441	344

Heat Treatment of steel grade 660

Heat treated : 1946°C - 1687°C

Technological Curves of steel grade 660

No Curve

Cross Reference Table (Equivalent Grade) of 660

Grade	Standard	Country	Application
AISI 660	AISI	USA	precipitation hardening
SUH660	JIS	Japan	austenitic special steel
Austenitic 660		China	CNS standard heat resistant steel bars(CNS 9608-1998)
STR660			KS standard austenitic heat resistant steel
42 2660			The Czech republic Structural steel
8660			Australia Structural steel
8660H			Australia Structural steel
XK8660S			Australia Structural steel
K8660HS			Australia Structural steel
Austenitic 660		China	China Taiwan Heat-Resistant Steel
ASTM A638 Grade 660B 660D Alloy A286	ASTM	USA	A precipitation hardening stainless type steel suitable for applications at high temperature.

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660