40Cr2Al1Mo18

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India IS 40Cr2Al1Mo18 Schedules for wrought steels Part 4 Alloy steels (Alloy constructional and spring steels) with specified chemical composition andd mechanical properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40Cr2Al1Mo18 / 40Cr2Al1Mo18

Category	Grade	Standard	Region/Area	Standard Content
Metals	40Cr2Al1Mo18	IS 1570-4	India	Schedules for wrought steels Part 4 Alloy steels (Alloy constructional and spring steels) with specified chemical composition andd mechanical properties

Chemical composition(mass fraction)(wt.%) of the 40Cr2Al1Mo18

Element	Min	Max	Similar
Si	0.1000	0.4500	-
S	-	0.0350	-
P	-	0.0350	-
Ni	-	0.3000	-
Mo	0.1000	0.2500	-
Mn	0.4000	0.7000	-
Cr	1.5000	1.8000	-
C	0.3500	0.4500	-
Al	0.9000	1.3000	-
Si	0.1000	0.4500	-
Ni	-	0.3000	-
Mo	0.1000	0.2500	-
Mn	0.4000	0.7000	-
Cr	1.5000	1.8000	-
C	0.3500	0.4500	-
Al	0.9000	1.3000	-

Mechanical Properties of steel grade 40Cr2Al1Mo18

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)
865 (≥)	197 (≥)	23	14	24	Solution and Aging, Annealing, Ausaging, Q+T,etc	233

Physical Properties of steel grade 40Cr2Al1Mo18

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
21	-	-			0.23	-
567	218	-	41.3	133		-
179	-	23	43.2			324	322

Heat Treatment of steel grade 40Cr2Al1Mo18

Heat treated : 1154°C - 1318°C

Technological Curves of steel grade 40Cr2Al1Mo18

No Curve

Cross Reference Table (Equivalent Grade) of 40Cr2Al1Mo18

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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