NCF 625 Stainless Steels to G 4901 (2008)

NCF 625 - Specification & Application

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

Corrosion-resisting and heat-resisting superalloy bars

Chemical composition(wt.%) of NCF 625 grade: to G 4901 (2008)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.10
Si - 0.50
Mn - 0.50
P - 0.015
S - 0.015
Cr 20.00 23.00
Ni 58.00 -
Cu - -
Al - 0.40
Ti - 0.40
Fe - 5.00
Nb+Ta 3.15 4.15
Mo 8.00 10.00

NCF 625 - Detail

Corrosion-resisting and heat-resisting superalloy bars

Mechanical properties of grade NCF 625 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)
633 (≥) 982 (≥) 12 32 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical properties of grade NCF 625 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
637 (≥) 521 (≥) 41 44 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 231
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
491 793 131

Equivalent Products

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