Alloy 77 SRM (SRM 770)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
СрМ 77 |
| Designation GOST Latin |
CpM 77 |
| Transliteration |
SrM 77 |
| The chemical elements |
AgCu 77 |
| Name |
The value |
| Designation GOST Cyrillic |
СрМ 770 |
| Designation GOST Latin |
CpM 770 |
| Transliteration |
SrM 770 |
| The chemical elements |
AgCu 770 |
Description
SRM alloy 77 is used: for production of sliding contacts, electrical conductors and other technical products.
Note
Alloy silver-copper.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В50 |
GOST 6563-75 |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 6836-2002 |
| Sheets and stripes |
В53 |
GOST 7221-80, GOST 24552-81 |
Chemical composition
| Standard |
Fe |
Cu |
Sb |
Pb |
Bi |
Ag |
| GOST 6836-2002 |
≤0.13 |
12.5-13.5 |
≤0.002 |
≤0.005 |
≤0.002 |
76.5-77.5 |
Ag is the basis.
According to GOST 6836-2002, the copper content is the rest (in the table the calculated content is indicated). The total content of impurities should be ≤ 0.140%.
Physical characteristics
| Temperature |
r, кг/м3 |
| 20 |
10100 |
A description of the physical symbols
| Name |
Description |
| r |
Density |
