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NA21

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NA20 331S40
#NA21

Description

UK B.S. BS 3072, BS 3074, BS 3076, NA21 Specialsteel Specification for nickel and nickel alloys: bar and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: NA21
Category Class Grade Standard Country Application
Steel GradesSpecialsteel NA21 B.S. UK Specification for nickel and nickel alloys: bar

Chemical composition(mass fraction)(wt.%) of the NA21

C Si Mn P S Cr Ni Mo Al Cu Ti Fe Co Nb+Ta
≤0.10 ≤0.50 ≤0.50 ≤0.015 ≤0.015 20.00 -23.00 58.00 - ≥ 8.00 -10.00 ≤0.40 ≤ ≥ ≤0.40 ≤5.00 ≤1.00 3.15 -4.15

Mechanical Properties of steel grade NA21

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)
329 (≥) 743 (≥) 32 13 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade NA21

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
34 - -     0.23 -  
386 379 - 22.3 444   -  
693 - 22 14.2   422 443

Heat Treatment of steel grade NA21

Heat treated : 1429°C - 1949°C

Technological Curves of steel grade NA21

Relevant standard of NA21

BS 3072 Specification for nickel and nickel alloys: sheet and plate BS-3072.pdf
BS 3074 Specification for nickel and nickel alloys: seamless tube BS-3074.pdf
BS 3076 Specification for nickel and nickel alloys: bar BS-3076.pdf
NA20 331S40
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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