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BV-Ag71CuNi-780/795 a

Japan JIS BV-Ag71CuNi-780/795a Precious brazing filler metals for vacuum service and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals BV-Ag71CuNi-780/795 a JIS Z3268 Japan Precious brazing filler metals for vacuum service

Chemical composition(mass fraction)(wt.%) of the BV-Ag71CuNi-780/795 a

Element Min Max Similar
Ni 0.3000 0.7000 -
Cu - - -
Cd - 0.0010 -
Zn - 0.0010 -
Ag 70.5000 72.5000 -
Pb - 0.0020 -
Other - 0.0010 -

Mechanical Properties of steel grade BV-Ag71CuNi-780/795 a

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)
243 (≥) 583 (≥) 11 32 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade BV-Ag71CuNi-780/795 a

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
34 - -     0.12 -  
899 787 - 11.3 322   -  
645 - 43 21.2   311 414

Heat Treatment of steel grade BV-Ag71CuNi-780/795 a

Heat treated : 1834°C - 1178°C

Technological Curves of steel grade BV-Ag71CuNi-780/795 a

Cross Reference Table (Equivalent Grade) of BV-Ag71CuNi-780/795 a

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