Bronze Bro5s25 (БрОС5-25)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
БрО5С25 |
| Designation GOST Latin |
BpO5C25 |
| Transliteration |
BrO5S25 |
| The chemical elements |
BaSn5Pb25 |
| Name |
The value |
| Designation GOST Cyrillic |
БрОС5-25 |
| Designation GOST Latin |
BpOC5-25 |
| Transliteration |
BrOS5-25 |
| The chemical elements |
BaSnPb5-25 |
Description
Bronze Bro5s25 used: for the manufacture of bimetal bearings for critical applications.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 613-79, OST 1 90054-72 |
Chemical composition
| Standard |
S |
P |
Si |
Ni |
Fe |
Cu |
As |
Al |
Zn |
Sn |
Sb |
Pb |
Bi |
Mg |
| GOST 613-79 |
≤0.05 |
≤0.05 |
≤0.02 |
≤2 |
≤0.2 |
The rest |
≤0.15 |
≤0.02 |
≤0.5 |
4-6 |
≤0.5 |
23-26 |
- |
≤0.02 |
| OST 1 90054-72 |
- |
≤0.1 |
≤0.02 |
≤2 |
≤0.25 |
The rest |
- |
≤0.02 |
0.2 |
4-6 |
≤0.3 |
23-27 |
≤0.01 |
- |
Cu is the basis.
The total fraction of impurities according to OST 1 90054-72 (elements with the content ≤) is 0.75% with the exception of nickel. Impurities that are not regulated by the table are included in the total amount of impurities.
According to GOST 613-79 the total content of impurities should be ≤ 1,20%. Impurities not regulated by the standard are included in the total amount of impurities. The mass fraction of nickel due to copper and the amount of impurities is not included.
Mechanical characteristics
| σB, MPa |
d5, % |
Brinell hardness number, MPa |
| Castings are supplied without heat treatment |
| ≥147 |
≥5 |
≥45 |
| ≥137.2 |
≥6 |
≥60 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
