Bronze Bro3c12s5 (БрОЦС3-12-5)

Designation

Name The value
Designation GOST Cyrillic БрО3Ц12С5
Designation GOST Latin BpO3Ts12C5
Transliteration BrO3Ts12S5
By chemical elements BaSn3Zn12Pb5
Name The value
Designation GOST Cyrillic БрОЦС3-12-5
Designation GOST Latin BpOTsC3-12-5
Transliteration BrOTsS3-12-5
By chemical elements BaSnZnPb3-12-5

Description

Bronze Bro3c12s5 used: for the production of castings of valves General purpose; details of pipeline valves and actuators to it.

Standards

Name Code Standards
Bars В55 GOST 24301-93
Non-ferrous metals, including rare, and their alloys В51 GOST 613-79
Cast iron castings (grey and malleable cast iron) В81 OST 24.207.01-90

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 ≤0.4 Rest ≤0.15 ≤0.02 8-15 2-3.5 ≤0.5 3-6 ≤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 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 sum of impurities is not included.

Mechanical properties

Section, mm σU, MPa d5, % HB, MPa
Castings are supplied without heat treatment
- ≥206 ≥5 ≥60
- ≥176 ≥8 ≥60
Rods and tubes of the first group is made by a horizontal molding according to GOST 24301-93 (in parentheses are the values for the casting of the second group of castings)
≥220 (180) ≥20 (16) ≥65 (60)

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
HB Brinell hardness number