Bronze БрО8С12 (БрОС8-12)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
БрО8С12 |
| Designation GOST Latin |
BpO8C12 |
| Transliteration |
BrO8S12 |
| The chemical elements |
BaSn8Pb12 |
| Name |
The value |
| Designation GOST Cyrillic |
БрОС8-12 |
| Designation GOST Latin |
BpOC8-12 |
| Transliteration |
BrOS8-12 |
| The chemical elements |
BaSnPb8-12 |
Description
Bronze БрО8С12 used: for the manufacture of castings bushings and responsible of bearings, operating at high pressure; castings parts metallurgical machinery (large bearings heavy mill, crushers and other parts subject to friction at high pressures and speeds).
Note
Vysokohromistyh bronze. Is a substitute of bronze stamps Bra9zh3l (Brazh9−4L). The coefficient of friction of bronze without lubrication of 0.10, with a lubricant is 0.005. The maximum allowable speed — 10 m/s Maximum load capacity: static — 700 kgf/cm2.
Standards
| Name |
Code |
Standards |
| Castings from non-ferrous metals and alloys |
В84 |
OST 24.916.01-71 |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
STP М314-95 |
Chemical composition
| Standard |
S |
P |
Si |
Ni |
Fe |
Cu |
As |
Al |
Zn |
Sn |
Sb |
Pb |
Bi |
Mg |
| OST 24.916.01-71 |
≤0.05 |
≤0.05 |
≤0.02 |
≤1.5 |
≤0.2 |
The rest |
- |
≤0.02 |
- |
7-9 |
- |
11-13 |
≤0.005 |
≤0.02 |
| STP М314-95 |
- |
≤0.05 |
≤0.02 |
≤2 |
≤0.2 |
The rest |
≤0.01 |
≤0.02 |
≤2 |
7-9 |
≤0.5 |
11-13 |
≤0.005 |
≤0.02 |
Cu is the basis.
According to OST 24.916.01-71 and STP M314-95 the total content of impurities should be ≤ 0.75%. The content of nickel is allowed due to the copper content.
According to STP M314-95, the content of zinc is allowed due to the copper content.
Mechanical characteristics
| σB, MPa |
d |
Brinell hardness number, MPa |
| Castings are supplied without heat treatment |
| ≥147 |
≥5 |
≥60 |
| ≥147 |
≥5 |
≥65 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
| 20 |
735 |
9100 |
A description of the physical symbols
| Name |
Description |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
