NA2 Stainless Steels to BS 3071

NA2 - Specification & Application

  • BS 3071 - Specification for nickel-copper alloy castings

Specification for nickel-copper alloy castings

Chemical composition(wt.%) of NA2 grade: to BS 3071

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Si 2.00 3.00
Mn - 1.50
P - 0.030
S - 0.030
Cr - -
Mo - -
Ni - remaining
Cu 28.00 34.00

NA2 - Detail

Specification for nickel-copper alloy castings

Mechanical properties of grade NA2 BS 3071

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)
566 (≥) 666 (≥) 33 43 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical properties of grade NA2 BS 3071

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
798 (≥) 242 (≥) 23 42 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 112
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
652 236 938

Equivalent Grade

Equivalent Products

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