40Mn4

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#40Mn4

Description

40Mn4 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: 40Mn4

Category	Type	Steel Grade
Steel Grades	Carbon Steel	40Mn4
		Ck50
		1.1241
		C55E
		1.1203
		Ck55
		1.1209
		C60E
		1.1221
		Ck60
		1.1223

Chemical composition(mass fraction)(wt.%) of the 40Mn4

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.36-0.44	0.25-0.50	0.80-1.10	0.035	0.035
Mo	Al	Cu	Nb	Ti	V	Ce

N	Co	Pb	B	Other

Mechanical Properties of steel grade 40Mn4

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)
729 (≥)	575 (≥)	23	42	43	Solution and Aging, Annealing, Ausaging, Q+T,etc	333

Physical Properties of steel grade 40Mn4

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
23	-	-			0.14	-
535	269	-	43.3	342		-
173	-	32	41.2			223	132

Heat Treatment of steel grade 40Mn4

Heat treated : 1269°C - 1829°C

Technological Curves of steel grade 40Mn4

No Curve

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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com

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