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Description

Japan JIS G 4901 (2008), NCF 718 Specialsteel Corrosion-resisting and heat-resisting superalloy bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: NCF 718
Category Class Grade Standard Country Application
Steel GradesSpecialsteel NCF 718 JIS Japan Corrosion-resisting and heat-resisting superalloy bars

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

C Si Mn P S Cr Ni Cu Al Ti Fe Nb+Ta Mo B
≤0.08 ≤0.35 ≤0.35 ≤0.015 ≤0.015 17.00 -21.00 50.00 -55.00 ≤0.30 0.20 -0.80 0.65 -1.15 remaining - ≥ 4.75 -5.50 2.80 -3.30 ≤0.006

Mechanical Properties of steel grade NCF 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)
959 (≥) 429 (≥) 31 44 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade NCF 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
41 - -     0.31 -  
848 411 - 34.3 132   -  
755 - 22 23.2   244 322

Heat Treatment of steel grade NCF 718

Heat treated : 1349°C - 1223°C

Technological Curves of steel grade NCF 718

Relevant standard of NCF 718

G 4901 (2008) Corrosion-resisting and heat-resisting superalloy bars G-4901-(2008).pdf

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