Alloy 80 CPM (800 CPM)

Designation

Name The value
Designation GOST Cyrillic СрМ 80
Designation GOST Latin CpM 80
Transliteration SrM 80
By chemical elements AgCu 80
Name The value
Designation GOST Cyrillic СрМ 800
Designation GOST Latin CpM 800
Transliteration SrM 800
By 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 strips В53 GOST 24552-81
Non-ferrous metals, including rare, and their alloys В51 GOST 30649-99, GOST Р 51152-98, GOST 6836-2002
Classification, nomenclature and General rules В50 GOST 6563-75

Chemical composition

Standard Fe Cu Sb Pb Bi O Ag
GOST 30649-99 ≤0.13 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, kg/m3
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.