in the watch industry.


Country Section Category
CIS, Russia, Ukraine Copper, copper alloys Copper-Nickel Alloys

Chemical composition

Standard Cu, % Zn, % Pb, % Ni + Co, %
GOST 492-2006 51–55 27.5–34 1.6–2 15–16.5

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\rho$$, $$\frac{kg}{m^3}$$
20 127 8800

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ d5, % Treatment
The alloy is soft 350–450 40–45
Alloy hard 600–700 2–4

Casting and technological parameters

melting point, °C annealing temperature, °C
1120 700–750


Standard Description
GOST 492-2006

Description of chemical elements

Element Units of measurement Description
Cu % Copper
Zn % Zinc
Pb % Lead
Ni + Co % Nickel + Cobalt

Description of physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength

Description of the casting and technological parameters

Parameter Units of measurement Description
melting point °C The temperature at which solid crystalline body makes the transition to the liquid state and Vice versa
annealing temperature °C The temperature at which the processes return recrystallization and homogenization of the metal to reduce its hardness for subsequent machining