Alloy 80 CPM (800 CPM)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
СрМ 80 |
| Designation GOST Latin |
CpM 80 |
| Transliteration |
SrM 80 |
| The chemical elements |
AgCu 80 |
| Name |
The value |
| Designation GOST Cyrillic |
СрМ 800 |
| Designation GOST Latin |
CpM 800 |
| Transliteration |
SrM 800 |
| The chemical elements |
AgCu 800 |
Description
Alloy SRM 80 applies: for production of sliding contacts, electrical conductors and other products for industrial purposes; items of tableware (spoons, forks, knives, coasters, dishes, blades, shovels, cups, glasses, sugar bowls, tea strainer); ritual and ceremonial items (wedding rings, crosses); jewellery for personal adornment (rings, rings, medallions, pendants, brooches, chains, bracelets, pins, cufflinks); cigarette cases and cigarette holders; commemorative medals and badges.
Note
Alloy silver-copper. With the increase of copper content in the alloy increases its hardness, but alloy becomes yellowish. The oxygen in the alloy increases the hardness and fragility.
Standards
| Name |
Code |
Standards |
| Sheets and stripes |
В53 |
GOST 24552-81 |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 30649-99, GOST Р 51152-98, GOST 6836-2002 |
| Classification, nomenclature and general norms |
В50 |
GOST 6563-75 |
Chemical composition
| Standard |
Fe |
Cu |
Sb |
Pb |
Bi |
O |
Ag |
| GOST 30649-99 |
≤0.13 |
The rest |
≤0.002 |
≤0.005 |
≤0.002 |
≤0.01 |
80-80.5 |
| GOST 6836-2002 |
≤0.13 |
19.7-20.3 |
≤0.002 |
≤0.005 |
≤0.002 |
- |
79.7-80.3 |
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%.
According to GOST 30649-99 the chemical composition is given for the jewelry alloy YUSRM 80 (YUSPR 800). The sum of the normalized impurities is ≤ 0.150%.
Physical characteristics
| Temperature |
r, кг/м3 |
| 20 |
10130 |
A description of the physical symbols
| Name |
Description |
| r |
Density |
Technological properties
| Name |
The value |
| Pressure treatment |
The alloy is suitable for all types of cold treatment. |
| Casting |
The alloy is suitable for all kinds of casting. |
