NCF 690 Stainless Steels to G 4901 (2008)

NCF 690 - Specification & Application

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

Corrosion-resisting and heat-resisting superalloy bars

Chemical composition(wt.%) of NCF 690 grade: to G 4901 (2008)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.05
Si - 0.50
Mn - 0.50
P - 0.03
S - 0.015
Cr 27.00 31.00
Ni 58.00 -
Cu - 0.50
Al - -
Ti - -
Fe - -

NCF 690 - Detail

Corrosion-resisting and heat-resisting superalloy bars

Mechanical properties of grade NCF 690 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)
134 (≥) 222 (≥) 31 42 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical properties of grade NCF 690 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
772 (≥) 954 (≥) 22 43 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 214
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
489 486 552

Equivalent Products

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