Alloy 34NKM (Alloy 34NVMP)
For the manufacture of cores of magnetic amplifiers, commutating chokes, rectifier units, elements of computing devices of calculating machines. Alloy production in Russia is carried out in accordance with GOST 10994−74
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Precision alloys |
Soft Magnetic Precision Alloys |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Co, % |
Ni, % |
P, % |
C, % |
S, % |
Mo, % |
|---|
| GOST 10994-74 |
30.83–34.75 |
0.15–0.3 |
0.3–0.6 |
28.5–30 |
33.5–35 |
< 0.02 |
< 0.03 |
< 0.02 |
2.8–3.2 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\rho$$, $$\frac{kg}{m^3}$$ |
$$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|
| 20 |
|
8500 |
0.5 |
| 100 |
10.6 |
|
|
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{P}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\psi$$, % |
Treatment |
|---|
| Tape |
|
|
|
|
540 |
|
40 |
40 |
|
| Tape |
|
|
|
cold-work |
930 |
885 |
4 |
5 |
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Tape |
|
|
130 |
| Tape |
|
cold-work |
155 |
Casting and technological parameters
Limit operating modes
Analogues
Standards
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 |
| Mo |
% |
Molybdenum |
Description of physical characteristics
| Parameter |
Units of measurement |
Description |
| $$\alpha\cdot 10^{6}$$ |
$$K^{-1}$$ |
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) |
| $$\psi$$ |
% |
Reduction in cross section on fracture |
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 |