C40

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#C40

Description

C40 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: C40

Category	Type	Steel Grade
Steel Grades	Carbon Steel	C40
		83Ni1
		C22
		1.0402
		C25
		1.0406
		C30
		1.0528
		C35
		1.0501
		1.0511

Chemical composition(mass fraction)(wt.%) of the C40

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.37-0.44	0.40	0.50-0.80	0.045	0.045
Mo	Al	Cu	Nb	Ti	V	Ce

N	Co	Pb	B	Other
				Cr+Ni+Mo ≤ 0.63

Mechanical Properties of steel grade C40

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)
124 (≥)	537 (≥)	14	43	21	Solution and Aging, Annealing, Ausaging, Q+T,etc	142

Physical Properties of steel grade C40

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
42	-	-			0.22	-
272	976	-	11.3	232		-
428	-	43	22.2			312	311

Heat Treatment of steel grade C40

Heat treated : 1518°C - 1456°C

Technological Curves of steel grade C40

No Curve

Cross Reference Table (Equivalent Grade) of C40

Grade	Standard	Application
OLC40		Structural steel
OLC40S		Structural steel
OLC40X		Structural steel
OLC40XS		Structural steel
C40E		Spain structural alloy steel
C40R		Spain structural alloy steel
RC40		Austrian structural steel
EN C40E	EN	Euronorm Structural steel
EN C40R	EN	Euronorm Structural steel
EN C40	EN	Euronorm Structural steel
EN C40D2	EN	Euronorm Structural steel
EN C40	EN	Euronorm Structural steel

Available Suppliers

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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C40