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1.6740

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GS-33NiCrMo7 4 4 GS-38NiCrMo8 4 4
#1.6740

Description

Germany DIN 1.6740 and 1.6740 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 1.6740
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 1.6740 DIN Germany
GS-36CrNiMo4
1.6515
GS-25CrNiMo4
GS-24CrNiMo3 2 5
1.6552
1.6570
GS-30NiCrMo8 5
1.6582
GS-34CrNiMo6
GS-33NiCrMo7 4 4

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

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％)
0.30-0.36 0.30-0.60 0.50-0.80 Max 0.015 Max 0.007 0.90-1.20 1.50-1.80 0.35-0.50

Mechanical Properties of steel grade 1.6740

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
525 (≥) 123 (≥) 24 11 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

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
11 - -     0.24 -  
639 481 - 23.3 322   -  
871 - 33 22.2   412 331

Heat Treatment of steel grade 1.6740

Heat treated : 1215°C - 1812°C

Technological Curves of steel grade 1.6740

Cross Reference Table (Equivalent Grade) of 1.6740

Grade Standard Country Application
1.6740 DIN Germany
GS-33NiCrMo7 4 4 GS-38NiCrMo8 4 4
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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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