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1.6781

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GS-18NiMoCr12-6 G19NiMoCr12-6
#1.6781

Description

1.6781 Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Mould Steel: 1.6781
Category Type Steel Grade Standard Country Application
Steel GradesMould Steel 1.6781
1.6761
G17NiMoCr3-6
1.6762
G14NiMoCr10-6
1.6779
GS-14NiMoCr10-6
1.6779
G17NiMoCr13-6
1.6781
GS-18NiMoCr12-6

Chemical composition(mass fraction)(wt.%) of the 1.6781

C
≤		 Si
≤		 Mn
≤		 P
≤		 S
≤		 Cr Ni
0.15-0.19   0.50 0.55-0.80  0.015  0.015  1.30-1.80  3.00-3.50 
Mo Al Cu Nb Ti V Ce
0.45-0.60             
N Co Pb B Other    
             
             

Mechanical Properties of steel grade 1.6781

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)
931 (≥) 826 (≥) 32 22 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade 1.6781

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
13 - -     0.12 -  
214 249 - 11.3 323   -  
998 - 13 31.2   432 422

Heat Treatment of steel grade 1.6781

Heat treated : 1483°C - 1767°C

Technological Curves of steel grade 1.6781

Cross Reference Table (Equivalent Grade) of 1.6781

Grade Standard Country Application
1.6781 DIN Germany
GS-18NiMoCr12-6 G19NiMoCr12-6
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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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