NA20 Stainless Steels to BS 3076

NA20 - Specification & Application

  • BS 3076 - Specification for nickel and nickel alloys: bar

Specification for nickel and nickel alloys: bar

Chemical composition(wt.%) of NA20 grade: to BS 3076

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.04 0.10
Si - 1.00
Mn - 1.00
P - -
S - 0.015
Cr 18.00 21.00
Ni - remaining
Mo - -
Al 1.00 1.80
Cu - 0.20
Ti 1.80 2.70
Fe - 1.50
B - 0.0080

NA20 - Detail

Specification for nickel and nickel alloys: bar

Mechanical properties of grade NA20 BS 3076

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)
872 (≥) 485 (≥) 11 12 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical properties of grade NA20 BS 3076

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
465 (≥) 439 (≥) 11 34 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 311
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
888 775 658

Equivalent Grade

Equivalent Products

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