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BV-Ag72Cu-780 b

Japan JIS BV-Ag72Cu-780b Precious brazing filler metals for vacuum service and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: BV-Ag72Cu-780b / BV-Ag72Cu-780 b
Category Grade Standard Region/Area Standard Content
Metals BV-Ag72Cu-780 b JIS Z3268 Japan Precious brazing filler metals for vacuum service

Chemical composition(mass fraction)(wt.%) of the BV-Ag72Cu-780 b

Element Min Max Similar
Cu - - -
Cd - 0.0020 -
Zn - 0.0020 -
Ag 71.0000 73.0000 -
Pb - 0.0020 -
Other - 0.0020 -

Mechanical Properties of steel grade BV-Ag72Cu-780 b

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)
448 (≥) 224 (≥) 43 23 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade BV-Ag72Cu-780 b

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 - -     0.31 -  
686 741 - 13.3 231   -  
913 - 12 11.2   241 321

Heat Treatment of steel grade BV-Ag72Cu-780 b

Heat treated : 1894°C - 1589°C

Technological Curves of steel grade BV-Ag72Cu-780 b

Cross Reference Table (Equivalent Grade) of BV-Ag72Cu-780 b

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