Alloy 77 SRM (SRM 770)

Designation

Name The value
Designation GOST Cyrillic СрМ 77
Designation GOST Latin CpM 77
Transliteration SrM 77
By chemical elements AgCu 77
Name The value
Designation GOST Cyrillic СрМ 770
Designation GOST Latin CpM 770
Transliteration SrM 770
By 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 rules В50 GOST 6563-75
Non-ferrous metals, including rare, and their alloys В51 GOST 6836-2002
Sheets and strips 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, kg/m3
20 10100

A description of the physical symbols

Name Description
r Density