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1.6740

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G33CrNiMo7-4-4 GS-33CrNiMo7-4-4
#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 Standard Country Application
Steel GradesMould Steel 1.6740
1.6528
GS24CrNiMo3-2-5
1.6552
GS-24CrNiMo3-2-5
1.6552
G34CrNiMo6
1.6582
GS-34CrNiMo6
1.6582
G33CrNiMo7-4-4

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
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)
532 (≥) 548 (≥) 43 13 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

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
32 - -     0.34 -  
365 686 - 42.3 433   -  
527 - 14 12.2   241 144

Heat Treatment of steel grade 1.6740

Heat treated : 1239°C - 1162°C

Technological Curves of steel grade 1.6740

Cross Reference Table (Equivalent Grade) of 1.6740

Grade Standard Country Application
1.6740 DIN Germany
G33CrNiMo7-4-4 GS-33CrNiMo7-4-4
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Jiangyou Longhai Special Steel Co.,Ltd.
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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