NCF718 Stainless Steels to D 3531 (2007)

NCF718 - Specification & Application

  • D 3531 (2007) - Corrosion - resisting and heat - resisting superalloy bars
  • D 3532 (2002) - Corrosion - resisting and heat - resisting superalloy plates and sheets

Corrosion - resisting and heat - resisting superalloy plates and sheets

Chemical composition(wt.%) of NCF718 grade: to D 3531 (2007)

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

NCF718 - Detail

Corrosion - resisting and heat - resisting superalloy plates and sheets

Mechanical properties of grade NCF718 D 3531 (2007)

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)
338 (≥) 551 (≥) 42 22 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical properties of grade NCF718 D 3531 (2007)

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
961 (≥) 499 (≥) 14 42 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 233
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
582 767 371

Equivalent Grade

Equivalent Products

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