Designation
| Name |
The value |
| Designation GOST Cyrillic |
БрБ2,5 |
| Designation GOST Latin |
BpB2,5 |
| Transliteration |
BrB25 |
| By chemical elements |
BaBe2,5 |
Description
Bronze Brb2,5 is used: for the manufacture of springs and elastic elements.
Note
According to GOST 28873−90 bronze Brb2,5 be removed from production from 01.01.1992 G.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare, and their alloys |
В51 |
GOST 28873-90 |
| Tape |
В54 |
TU 48-21-96-89 |
Chemical composition
| Standard |
Si |
Ni |
Fe |
Cu |
Al |
Pb |
Be |
|
≤0.15 |
0.2-0.5 |
≤0.15 |
Rest |
≤0.15 |
≤0.005 |
2.3-2.6 |
Cu is the basis.
The total mass fraction of impurities is ≤ 0.50%.
Mechanical properties
| Section, mm |
σU, MPa |
d5, % |
HB, MPa |
| Rolled steel in delivery condition (longitudinal samples) |
|
≥580 |
≥25 |
≥130 |
|
≥1350 |
1-2 |
- |
Description mechanical marks
| Name |
Description |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| HB |
Brinell hardness number |