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Bronze Bro8c4 (БрОЦ8-4)

Designation

Name The value
Designation GOST Cyrillic БрО8Ц4
Designation GOST Latin BpO8Ts4
Transliteration BrO8Ts4
The chemical elements BaSn8Zn4
Name The value
Designation GOST Cyrillic БрОЦ8-4
Designation GOST Latin BpOTs8-4
Transliteration BrOTs8-4
The chemical elements BaSnZn8-4

Description

Bronze Bro8c4 used: for the manufacture of castings parts fittings, shaped parts of pipelines; pumps operating in sea water; casting parts for shipbuilding, ship engineering and instrumentation.

Standards

Name Code Standards
Non-ferrous metals, including rare metals, and their alloys В51 GOST 613-79
Castings from non-ferrous metals and alloys В84 OST 5Р.9209-82

Chemical composition

Standard S P Si Ni Fe Cu As Al Zn Sn Sb Pb Mg
GOST 613-79 ≤0.05 ≤0.05 ≤0.02 ≤2 ≤0.3 The rest ≤0.15 ≤0.02 4-6 7-9 ≤0.3 ≤0.5 ≤0.02
Cu is the basis.
According to GOST 613-79 and OST 5P.9209-82, the total content of impurities should be ≤ 1.00%. Impurities not regulated by the standard are included in the total amount of impurities. The sum of impurities of silicon and aluminum should not exceed 0.020%. In bronze, not intended for casting parts operating under hydraulic pressure, the manufacturer's agreement with the consumer allows the mass fraction of aluminum to 0.050% and silicon - up to 0.050%. The mass fraction of nickel due to copper and the amount of impurities is not included. The mass fraction of lead, as agreed by the manufacturer with the consumer, is allowed up to 1.50%, in which case the total amount of impurities is not included. In bronze intended for welded structures, the mass fraction of lead should be no more than 0.050%.

Mechanical characteristics

sT|s0,2, MPa σB, MPa d5, % kJ/m2, кДж/м2 Brinell hardness number, MPa
Castings are supplied without heat treatment. The permanent mold in the ground, centrifugal, investment casting, shell moulded
≥78.4 ≥196 ≥10 ≥196 ≥75

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
kJ/m2 Toughness

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