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JIS NCF 718 Details

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NCF 718 Application:Corrosion-resisting and heat-resisting superalloy bars

Category Type Grade Designations
Grades Stainless Steels NCF 718 Japan - JIS , G 4901 (2008) - Corrosion-resisting and heat-resisting superalloy bars

Chemical composition(wt.%) of NCF 718 grade: G 4901 (2008)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 0.35
Mn - 0.35
P - 0.015
S - 0.015
Cr 17.00 21.00
Ni 50.00 55.00
Cu - 0.30
Al 0.20 0.80
Ti 0.65 1.15
Fe remaining -
Nb+Ta 4.75 5.50
Mo 2.80 3.30
B - 0.006
Corrosion-resisting and heat-resisting superalloy bars

Mechanical properties of grade NCF 718 G 4901 (2008)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
826 (≥) 914 (≥) 41 44 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical properties of grade NCF 718 G 4901 (2008)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
663 (≥) 946 (≥) 11 12 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 332
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
366 327 921

NCF 718 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
NCF 718 JIS Japan
Corrosion-resisting and heat-resisting superalloy bars
NCF 718 JIS Japan
Corrosion-resisting and heat-resisting superalloy plates and sheets

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