A638 Grade 660

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America ASTM A638Grade660 高温用沉淀硬化铁基超级合金棒材、锻件和锻坯 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A638Grade660 / A638 Grade 660

Category	Grade	Standard	Region/Area	Standard Content
Metals	A638 Grade 660	ASTM A638	America	高温用沉淀硬化铁基超级合金棒材、锻件和锻坯

Chemical composition(mass fraction)(wt.%) of the A638 Grade 660

Element	Min	Max	Similar
B	0.0010	0.0100	-
Ti	1.9000	2.3500	-
Al	-	0.3500	-
V	0.1000	0.5000	-
Mo	1.0000	1.5000	-
Ni	24.0000	27.0000	-
Cr	13.5000	16.0000	-
P	-	0.0400	-
S	-	0.0300	-
Mn	-	2.0000	-
Si	-	1.0000	-
C	-	0.0800	-

Mechanical Properties of steel grade A638 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)
183 (≥)	159 (≥)	44	32	21	Solution and Aging, Annealing, Ausaging, Q+T,etc	444

Physical Properties of steel grade A638 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	-	-			0.41	-
545	425	-	22.3	442		-
259	-	11	41.2			113	212

Heat Treatment of steel grade A638 Grade 660

Heat treated : 1223°C - 1444°C

Technological Curves of steel grade A638 Grade 660

No Curve

Cross Reference Table (Equivalent Grade) of A638 Grade 660

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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