ICI 4140

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#ICI # # #4140

Description

ICI 4140 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: ICI 4140

Category	Type	Steel Grade
Steel Grades	Carbon Steel	ICI 4140
		ASTM 4A
		ASTM 4Q
		ICI 1050
		ASTM 5N
		ICI 6120
		ASTM 6N
		ICI 4020
		ASTM 7Q
		ICI 4130
		ASTM 8Q

Chemical composition(mass fraction)(wt.%) of the ICI 4140

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.35-0.45	0.2-0.8	0.7-1.0	0.04	0.045	0.8-1.1	0.5
Mo	Al	Cu	Nb	Ti	W	Ce
0.15-0.25		0.5			0.1
N	Co	Pb	B	Other

Mechanical Properties of steel grade ICI 4140

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)
694 (≥)	589 (≥)	21	22	23	Solution and Aging, Annealing, Ausaging, Q+T,etc	241

Physical Properties of steel grade ICI 4140

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
43	-	-			0.14	-
339	359	-	43.3	411		-
743	-	24	14.2			233	323

Heat Treatment of steel grade ICI 4140

Heat treated : 1814°C - 1231°C

Technological Curves of steel grade ICI 4140

No Curve

Cross Reference Table (Equivalent Grade) of ICI 4140

Grade	Standard	Country	Application
ICI 1020	AISI	USA
ICI 1030	AISI	USA
ICI 1040	AISI	USA
ICI 1050	AISI	USA
ICI 6120	AISI	USA
ICI 4020	AISI	USA
ICI 4130	AISI	USA
ICI 4140	AISI	USA
ICI 4330	AISI	USA
ICI 4340	AISI	USA
ICI 4620	AISI	USA
ICI 6150	AISI	USA
ICI 8620	AISI	USA
ICI 8630	AISI	USA
ICI 52100	AISI	USA
OTA10TiMoNiCil70			Cast Steel
Q195		China	Engineering and welding
Q215		China	Engineering and welding
Q215 B		China	Engineering and welding
Q235		China	Engineering and welding

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