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 |
