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

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

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

Element Min Max Similar
Au 81.5000 82.5000 -
Ni - - -
Cd - 0.0010 -
Zn - 0.0010 -
Pb - 0.0020 -
Other - 0.0010 -

Mechanical Properties of steel grade BVAu-4 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)
885 (≥) 384 (≥) 31 31 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade BVAu-4 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
13 - -     0.41 -  
948 873 - 21.3 143   -  
664 - 14 34.2   141 143

Heat Treatment of steel grade BVAu-4 a

Heat treated : 1372°C - 1736°C

Technological Curves of steel grade BVAu-4 a

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

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