1.6740

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#1.6740

Description

1.6740 Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Mould Steel: 1.6740

Category	Type	Steel Grade
Steel Grades	Mould Steel	1.6740
		1.6552
		GS-24CrNiMo3-2-5
		1.6552
		G34CrNiMo6
		1.6582
		GS-34CrNiMo6
		1.6582
		G33CrNiMo7-4-4
		1.6740
		GS-33CrNiMo7-4-4

Chemical composition(mass fraction)(wt.%) of the 1.6740

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.30-0.36	0.60	0.50-0.80	0.015	0.007	0.90-1.20	1.50-1.80
Mo	Al	Cu	Nb	Ti	V	Ce
0.35-0.50
N	Co	Pb	B	Other

Mechanical Properties of steel grade 1.6740

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)
631 (≥)	241 (≥)	44	11	24	Solution and Aging, Annealing, Ausaging, Q+T,etc	432

Physical Properties of steel grade 1.6740

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
12	-	-			0.14	-
352	933	-	22.3	423		-
348	-	22	32.2			444	423

Heat Treatment of steel grade 1.6740

Heat treated : 1486°C - 1144°C

Technological Curves of steel grade 1.6740

No Curve

Cross Reference Table (Equivalent Grade) of 1.6740

Grade	Standard	Country	Application
1.6740	DIN	Germany

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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...

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