Precision Alloy 30NVKH

No foreign analogues

It is used for the manufacture of elastic elements of watch movements to ensure increased accuracy

Classification

Country Section Category
CIS, Russia, Ukraine Precision alloys With preset elastic properties

Chemical composition

Standard Fe, % Si, % Mn, % Co, % Ni, % W, % ET, %
GOST 10994-74 43.04–47.5 0.1–0.3 0.2–0.5 7–8 30–31.4 15.2–16.7 < 0.06

Information on suppliers

Physical characteristics

Temperature, °C $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ Cp, Дж/кг·К
20 14 65.5 8200 456

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Sheet GOST 10994-74 <2.0 Transverse 850–1000 400–500 5–8

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Sheet GOST 10994-74 240–270

Limit operating modes

Standard Температура, °C
GOST 10994-74 < 600

Standards

Standard Description
GOST 10994-74

Description of chemical elements

Element Units of measurement Description
ET % Total other items
Fe % Iron
Si % Silicon
Mn % Manganese
Co % Cobalt
Ni % Nickel
W % Tungsten

Description of physical characteristics

Parameter Units of measurement Description
Cp Дж/кг·К Specific heat of material
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\varkappa$$ $$\frac{W}{m\cdot K}$$ Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

Description of mechanical properties

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