Alloy Clsrm 58,5-20 (Clsrm 585-200)

Designation

Name The value
Designation GOST Cyrillic ЗлСрМ 58,5-20
Designation GOST Latin ZlCpM 58,5-20
Transliteration ZlSrM 585-20
By chemical elements AuAgCu 58,5-20
Name The value
Designation GOST Cyrillic ЗлСрМ 585-200
Designation GOST Latin ZlCpM 585-200
Transliteration ZlSrM 585-200
By chemical elements AuAgCu 585-200

Description

Alloy Clsrm 58,5−20 used: for production of sliding contacts; jewellery for personal adornment (rings with artistic treatment, earrings, medallions, pendants, brooches, chains, bracelets, clips, cuff links, watch cases); ritual and ceremonial items (wedding rings, crosses).

Note

The gold-silver-copper alloy of 585-th sample.

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 6835-2002, TU 117-1-804-95, TU 1995-804-05785324-2005
Classification, nomenclature and General rules В50 GOST 6563-75

Chemical composition

Standard Fe Cu Sb Pb Bi O Ag Au
GOST 30649-99 ≤0.15 Rest ≤0.005 ≤0.005 ≤0.005 ≤0.007 19.5-20.5 58.5-59
GOST 6835-2002 ≤0.15 20.5-22 ≤0.005 ≤0.005 ≤0.005 - 19.5-20.5 58.2-58.8
Au is the base.
According to GOST 6835-2002 the amount of normalized impurities is ≤ 0.16%.
According to GOST 30649-99 the chemical composition is given for the jewelry alloy YuZlSrM 58,5-20 (ЮЗлСрМ 585-200). The sum of the normalized impurities is ≤ 0.170%.

Physical characteristics

Temperature r, kg/m3
20 13600

A description of the physical symbols

Name Description
r Density

Technological properties

Name The value
Machinability The best machinability of the alloy in fine condition, obtained by heat treatment of the pre-deformed alloy. Cutting, including diamond, is recommended in a hardened condition that increases hardness by 30-50 %.
Pressure treatment Suitable for all types of cold treatment.
Casting Suitable for all types of casting. Among the gold-silver-copper alloy has better castability (the ratio silver:copper, close to 1:1.