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Russia GOST BrA7 Tin-free pressure-worked bronzes. Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: BrA7 / BrA7
Category Grade Standard Region/Area Standard Content
Metals BrA7 GOST 18175 Russia Tin-free pressure-worked bronzes. Grades

Chemical composition(mass fraction)(wt.%) of the BrA7

Element Min Max Similar

Mechanical Properties of steel grade BrA7

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)
914 (≥) 682 (≥) 43 31 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade BrA7

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 - -     0.44 -  
813 725 - 32.3 443   -  
556 - 41 34.2   421 432

Heat Treatment of steel grade BrA7

Heat treated : 1536°C - 1648°C

Technological Curves of steel grade BrA7

Cross Reference Table (Equivalent Grade) of BrA7

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