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Japan JIS BVAu-4b Precious brazing filler metals for vacuum service and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: BVAu-4b / BVAu-4 b
Category Grade Standard Region/Area Standard Content
Metals BVAu-4 b JIS Z3268 Japan Precious brazing filler metals for vacuum service

Chemical composition(mass fraction)(wt.%) of the BVAu-4 b

Element Min Max Similar
Au 81.5000 82.5000 -
Ni - - -
Cd - 0.0020 -
Zn - 0.0020 -
Pb - 0.0020 -
Other - 0.0020 -

Mechanical Properties of steel grade BVAu-4 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)
336 (≥) 631 (≥) 21 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade BVAu-4 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
43 - -     0.21 -  
892 229 - 41.3 134   -  
582 - 44 33.2   313 232

Heat Treatment of steel grade BVAu-4 b

Heat treated : 1724°C - 1279°C

Technological Curves of steel grade BVAu-4 b

Cross Reference Table (Equivalent Grade) of BVAu-4 b

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