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B740 C72700

America ASTM B740C72700 铜镍锡旋节合金带材 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B740C72700 / B740 C72700
Category Grade Standard Region/Area Standard Content
Metals B740 C72700 ASTM B740 America 铜镍锡旋节合金带材

Chemical composition(mass fraction)(wt.%) of the B740 C72700

Element Min Max Similar

Mechanical Properties of steel grade B740 C72700

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)
345 (≥) 715 (≥) 33 34 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade B740 C72700

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
12 - -     0.11 -  
418 952 - 22.3 222   -  
872 - 42 11.2   231 234

Heat Treatment of steel grade B740 C72700

Heat treated : 1227°C - 1552°C

Technological Curves of steel grade B740 C72700

Cross Reference Table (Equivalent Grade) of B740 C72700

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