E⋅109
MPa
α⋅106
K−1
ρ
kgm3
σU
MPa
σY
MPa

Precision Alloy 30NK

No foreign analogues

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

Classification

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

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Co, %	Ni, %	ET, %
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

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Physical characteristics

Temperature, °C	$E\cdot 10^{9}$ , $MPa$	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\rho$ , $\frac{kg}{m^3}$	Cp, Дж/кг·К
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
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
Rolling	Standard	Classifiers	Value, HBW
Tape	TU 14-1-1168-75		100–110

Limit operating modes

Standard	Температура, °C
Standard	Температура, °C
GOST 10994-74	< 250

Properties

Property
Property
The alloy has anisotropy of magnetic properties.

Standards

Standard	Description
Standard	Description
GOST 10994-74

Description of chemical elements

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