47NK

For continuous inductor coil cores, inductors filters, broadband transformers;

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Co, % Ni, % P, % C, % S, %
GOST 10994-74 27.53–31.05 0.15–0.3 0.3–0.6 22.5–23.5 46–48 < 0.02 < 0.03 < 0.02

Information on suppliers

Physical characteristics

Temperature, °C E\cdot 10^{9}, MPa \alpha\cdot 10^{6}, K^{-1} \rho, \frac{kg}{m^3} R\cdot 10^{-6}, \Omega\cdot m
20 200 8400 0.2
100 11

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}, MPa \sigma_{P}, MPa \epsilon_L, % Treatment
Tape 490 145 40
Tape cold-work 880 3

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Tape 130
Tape cold-work 160

Standards

Standard Description
GOST 10994-74

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Co % Cobalt
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur

Description of physical characteristics

Parameter Units of measurement Description
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
R\cdot 10^{-6} \Omega\cdot m Electrical resistivity

Description of mechanical properties

Parameter Units of measurement Description
\sigma _{U} MPa Ultimate tensile strength
\sigma_{P} MPa Proportionality limit
\epsilon_L % Elongation at break (longitudinal)