B 477 Grade C Stainless Steels to B 477 (1997)

B 477 Grade C - Specification & Application

  • B 477 (1997) - Gold-Silver-Nickel Electrical Contact Alloy

Gold-Silver-Nickel Electrical Contact Alloy

Chemical composition(wt.%) of B 477 Grade C grade: to B 477 (1997)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.01
Si - 0.05
Mn - 1.50
P - 0.04
S - 0.01
Ni - remaining
Cr 0.50 1.50
Al 0.10 0.50
Cu - 0.50
Ti - -
Fe 1.00 6.00
Mo 26.00 30.00
Co - 2.50

B 477 Grade C - Detail

Gold-Silver-Nickel Electrical Contact Alloy

Mechanical properties of grade B 477 Grade C B 477 (1997)

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)
252 (≥) 624 (≥) 22 14 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical properties of grade B 477 Grade C B 477 (1997)

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
166 (≥) 141 (≥) 44 32 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 421
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
574 553 626

Equivalent Products

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