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England B.S. NS Specification for patented cold drawn steel wire for mechanical springs and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: NS / NS
Category Grade Standard Region/Area Standard Content
Metals NS BS 5216 England Specification for patented cold drawn steel wire for mechanical springs

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

Element Min Max Similar

Mechanical Properties of steel grade NS

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)
662 (≥) 536 (≥) 34 13 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade NS

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
42 - -     0.42 -  
428 786 - 24.3 234   -  
662 - 14 24.2   331 211

Heat Treatment of steel grade NS

Heat treated : 1766°C - 1894°C

Technological Curves of steel grade NS

Cross Reference Table (Equivalent Grade) of NS

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