Precision Alloy 30NK

No foreign analogues

Used for the manufacture of cores of constant inductors, filter chokes, broadband transformers

Classification

Country Section Category
CIS, Russia, Ukraine Precision alloys Soft Magnetic Precision Alloys

Chemical composition

Standard Fe, % Si, % Mn, % Co, % Ni, % ET, %
GOST 10994-74 51.51–54.5 < 0.5 < 0.4 16.5–17.5 29–30 < 0.09

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\rho$$, $$\frac{kg}{m^3}$$ Cp, Дж/кг·К
20 185 13 8200 455

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Tape TU 14-1-1168-75 <2.0 Transverse 450–520 130–140 15–20

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Tape TU 14-1-1168-75 100–110

Limit operating modes

Standard Температура, °C
GOST 10994-74 < 250

Properties

Property
The alloy has anisotropy of magnetic properties.

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

Description of physical characteristics

Parameter Units of measurement Description
Cp Дж/кг·К Specific heat of material
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\rho$$ $$\frac{kg}{m^3}$$ 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