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Description

UK B.S. BS 3071, NA3 Specialsteel Specification for nickel-copper alloy castings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: NA3
Category Class Grade Standard Country Application
Steel GradesSpecialsteel NA3 B.S. UK Specification for nickel-copper alloy castings

Chemical composition(mass fraction)(wt.%) of the NA3

C Si Mn P S Cr Mo Ni Cu
≤0.15 3.50 -4.50 ≤1.50 ≤0.030 ≤0.030 ≤ ≥ ≤ ≥ ≤remaining 28.00 -34.00

Mechanical Properties of steel grade NA3

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
915 (≥) 973 (≥) 41 41 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade NA3

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
41 - -     0.33 -  
648 953 - 11.3 142   -  
318 - 24 42.2   234 212

Heat Treatment of steel grade NA3

Heat treated : 1335°C - 1665°C

Technological Curves of steel grade NA3

Relevant standard of NA3

BS 3071 Specification for nickel-copper alloy castings BS-3071.pdf

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