Alloy Clsrm 75−15 used: for the production of jewelry for personal adornment (rings, rings, earrings, lockets, brooches, bracelets, clips, tie pins, cufflinks; gifts; commemorative medals; jewelry with emeralds.

Note

The gold-silver-copper alloy 750-th sample. One of the best combination of decorative and technological properties among jewelry alloy 750-th sample of the alloy Clsrm 750−150 (greenish-yellow).

Standards

Name	Code	Standards
Sheets and strips	В53	GOST 24552-81
Classification, nomenclature and General rules	В50	GOST 6563-75
Non-ferrous metals, including rare, and their alloys	В51	GOST 6835-80, GOST 30649-99, GOST Р 51152-98, TU 117-1-804-95, TU 1995-804-05785324-2005

Chemical composition

Standard	P	Fe	Cu	Sb	Pb	Bi	O	Ag	Au
GOST 6835-80	≤0.005	≤0.15	9.5-10.5	≤0.005	≤0.005	≤0.005	-	14.5-15.5	74.5-75.5
GOST 30649-99	-	≤0.15	Rest	≤0.005	≤0.005	≤0.005	≤0.007	14.5-15.5	75-75.5

Au is the base.
According to GOST 6835-80 the amount of normalized impurities is ≤ 0.170%.
According to GOST 30649-99 the chemical composition is given for the jewelry alloy YuZlSrM 75-15 (YuZlSrM 750-150). The sum of the normalized impurities is ≤ 0.170%.

Physical characteristics

Temperature	r, kg/m³
20	15530

A description of the physical symbols

Name	Description
r	Density

Technological properties

Name	The value
Machinability	For machining, including diamond processing, it is preferable to use negativnoe or hardened state.
Pressure treatment	To all kinds of cold treatment.
Features of heat treatment	Low-temperature annealing leads to a significant increase of hardness, while reducing ductility. This can be used to improve the wear resistance of products.
Casting	When the casting alloy must be melted under vacuum and poured under a protective atmosphere.
Soldering	Alloy well soldered and recommended for the manufacture of products coated with enamel.

Alloy Clsrm 75-15 (Clsrm 750-150)

Designation

Description