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1.6781

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GS-18NiCrMo12 6 GS-19NiCrMo12 6
#1.6781

Description

Germany DIN 1.6781 and 1.6781 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 1.6781
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 1.6781 DIN Germany
GS-40NiCrMo6 5 6
GS-20NiMoCr3 7
1.6750
1.6759
GS-18NiMoCr3 6
GS-22NiMoCr5 6
1.6760
1.6779
GS-14NiCrMo10 6
GS-18NiCrMo12 6

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

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％)
0.15-0.19 0.10-0.30 0.55-0.70 Max 0.010 Max 0.010 1.30-1.80 3.00-3.20 0.45-0.55

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)
418 (≥) 373 (≥) 43 31 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

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
33 - -     0.14 -  
155 215 - 13.3 243   -  
686 - 44 21.2   232 123

Heat Treatment of steel grade 1.6781

Heat treated : 1829°C - 1777°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-18NiCrMo12 6 GS-19NiCrMo12 6
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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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