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China 舞钢Q/WTB 718 供龙记合金模具钢718系列技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 718 / 718
Category Grade Standard Region/Area Standard Content
Metals 718 WYJ 103 China 供龙记合金模具钢718系列技术条件

Chemical composition(mass fraction)(wt.%) of the 718

Element Min Max Similar
Ni 0.9000 1.2000 -
Mo 0.2000 0.5000 -
Cr 1.8000 2.0000 -
S - 0.0100 -
P - 0.0200 -
Mn 1.1000 1.5000 -
Si 0.2000 0.4500 -
C 0.3500 0.4000 -

Mechanical Properties of steel grade 718

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)
974 (≥) 723 (≥) 23 33 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade 718

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
24 - -     0.41 -  
291 985 - 42.3 421   -  
512 - 11 13.2   123 113

Heat Treatment of steel grade 718

Heat treated : 1172°C - 1778°C

Technological Curves of steel grade 718

Cross Reference Table (Equivalent Grade) of 718

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