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B740 Cu-15Ni-8Sn

America ASTM B740Cu-15Ni-8Sn 铜镍锡旋节合金带材 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B740Cu-15Ni-8Sn / B740 Cu-15Ni-8Sn
Category Grade Standard Region/Area Standard Content
Metals B740 Cu-15Ni-8Sn ASTM B740 America 铜镍锡旋节合金带材

Chemical composition(mass fraction)(wt.%) of the B740 Cu-15Ni-8Sn

Element Min Max Similar
Zn - 0.5000 -
Sn 7.5000 8.5000 -
Pb - 0.0200 -
Ni 14.5000 15.5000 -
Mn - 0.3000 -
Mg - 0.1500 -
Fe - 0.5000 -
Cu - - -
Cb - 0.1000 -

Mechanical Properties of steel grade B740 Cu-15Ni-8Sn

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)
424 (≥) 566 (≥) 43 44 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade B740 Cu-15Ni-8Sn

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
43 - -     0.13 -  
813 763 - 24.3 213   -  
787 - 32 41.2   313 212

Heat Treatment of steel grade B740 Cu-15Ni-8Sn

Heat treated : 1197°C - 1967°C

Technological Curves of steel grade B740 Cu-15Ni-8Sn

Cross Reference Table (Equivalent Grade) of B740 Cu-15Ni-8Sn

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