A768 Grade3 Class2

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America ASTM A768Grade3Class2 涡轮机转子及轴用经真空处理的含铬12%的合金钢锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A768Grade3Class2 / A768 Grade3 Class2

Category	Grade	Standard	Region/Area	Standard Content
Metals	A768 Grade3 Class2	ASTM A768/A768M	America	涡轮机转子及轴用经真空处理的含铬12%的合金钢锻件

Chemical composition(mass fraction)(wt.%) of the A768 Grade3 Class2

Element	Min	Max	Similar
Co	0.1500	-	-
Mo	-	0.2000	-
Ni	-	0.7500	-
Cr	11.0000	13.0000	-
P	-	0.0150	-
S	-	0.0120	-
Mn	0.2500	1.0000	-
Si	0.1500	0.4500	-
C	0.1000	0.1600	-
Si	0.1500	0.4500	-
S	-	0.0120	-
P	-	0.0150	-
Ni	-	0.7500	-
Nb	0.1500	-	-
Mo	-	0.2000	-
Mn	0.2500	1.0000	-
Cr	11.0000	13.0000	-
C	0.1000	0.1600	-

Mechanical Properties of steel grade A768 Grade3 Class2

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)
158 (≥)	961 (≥)	13	22	22	Solution and Aging, Annealing, Ausaging, Q+T,etc	323

Physical Properties of steel grade A768 Grade3 Class2

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
33	-	-			0.32	-
543	361	-	44.3	234		-
426	-	44	12.2			341	412

Heat Treatment of steel grade A768 Grade3 Class2

Heat treated : 1448°C - 1693°C

Technological Curves of steel grade A768 Grade3 Class2

No Curve

Cross Reference Table (Equivalent Grade) of A768 Grade3 Class2

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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