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Bronze Bro4c7s5 (БрОЦС3,5-7-5)

Designation

Name The value
Designation GOST Cyrillic БрО4Ц7С5
Designation GOST Latin BpO4Ts7C5
Transliteration BrO4Ts7S5
The chemical elements BaSn4Zn7Pb5
Name The value
Designation GOST Cyrillic БрОЦС3,5-7-5
Designation GOST Latin BpOTsC3,5-7-5
Transliteration BrOTsS35-7-5
The chemical elements BaSnZnPb3,5-7-5

Description

Bronze Bro4c7s5 used: for the manufacture of castings of valves, anti-friction parts.

Standards

Name Code Standards
Non-ferrous metals, including rare metals, and their alloys В51 GOST 613-79

Chemical composition

Standard S P Si Ni Fe Cu As Al Zn Sn Sb Pb Mg
GOST 613-79 ≤0.05 ≤0.1 ≤0.05 ≤2 ≤0.4 The rest ≤0.15 ≤0.05 6-9 3-5 ≤0.5 4-7 ≤0.02
Cu is the basis.
According to GOST 613-79, the total content of impurities should be ≤ 1.30%. Impurities not regulated by the standard are included in the total amount of impurities. The mass fraction of nickel due to copper and the sum of impurities is not included.

Mechanical characteristics

σB, MPa d5, % Brinell hardness number, MPa
Castings are supplied without heat treatment
≥176.2 ≥4 ≥60
≥147 ≥6 ≥60

Description mechanical marks

Name Description
σB Limit short-term strength
d5 Elongation after rupture

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