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B971 Class H

America ASTM B971ClassH 用于电子应用中使用镀银布雷德铜扁线的标准规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B971ClassH / B971 Class H
Category Grade Standard Region/Area Standard Content
Metals B971 Class H ASTM B971 America 用于电子应用中使用镀银布雷德铜扁线的标准规范

Chemical composition(mass fraction)(wt.%) of the B971 Class H

Element Min Max Similar

Mechanical Properties of steel grade B971 Class H

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)
459 (≥) 347 (≥) 22 31 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade B971 Class H

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
21 - -     0.22 -  
511 569 - 11.3 133   -  
785 - 24 32.2   123 243

Heat Treatment of steel grade B971 Class H

Heat treated : 1748°C - 1567°C

Technological Curves of steel grade B971 Class H

Cross Reference Table (Equivalent Grade) of B971 Class H

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