Iron-cobalt-nickel alloy 25KF14N
It is used for the active part of hysteresis motors.
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Precision alloys |
Magnetic Hard Precision Alloys |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Co, % |
Ni, % |
V, % |
P, % |
C, % |
S, % |
|---|
| GOST 10994-74 |
54.7–58.5 |
< 0.3 |
< 0.4 |
24.5–25.5 |
13.5–14.5 |
3.5–4.5 |
< 0.02 |
< 0.06 |
< 0.02 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$\rho$$, $$\frac{kg}{m^3}$$ |
|---|
| 20 |
8180 |
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
d5, % |
Treatment |
|---|
| Tape |
GOST 10994-74 |
<2.0 |
Transverse |
raw, cold rolling, thin, Transverse |
1600–2000 |
2–5 |
|
Magnetic properties
| Rolling |
$$H_c$$, $$A/m$$ |
$$\mu_{max}$$, $$MH/m$$ |
$$B_{1000}$$, $$T$$ |
|---|
| Tape |
6.4–8 |
2000–4000 |
0.8–1.05 |
Твёрдость по Роквеллу
| Rolling |
Standard |
Classifiers |
Value, HRC |
| Tape |
GOST 10994-74 |
raw, cold rolling, thin, Transverse |
35–40 |
Technological Properties
| Weldability |
Flake Susceptibility |
Propensity to temper brittleness |
|---|
| Not applicable for welded structures |
insensitive |
not inclined |
Properties
| Property |
|---|
| the alloy is anisotropic |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Co |
% |
Cobalt |
| Ni |
% |
Nickel |
| V |
% |
Vanadium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
Description of physical characteristics
| Parameter |
Units of measurement |
Description |
| $$\rho$$ |
$$\frac{kg}{m^3}$$ |
The density of the material |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| d5 |
% |
Elongation at break |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
Description of magnetic properties
| Parameter |
Units of measurement |
Description |
| $$H_c$$ |
$$A/m$$ |
Magnetic coercivity (not more) |
| $$\mu_{max}$$ |
$$MH/m$$ |
Magnetic permeability (not more) |
| $$B_{1000}$$ |
$$T$$ |
Magnetic induction (not less) in a magnetic field while magnetic field strength is 1000 A/m |
Designation of types of weldability
| Parameter |
Units of measurement |
Description |
| no limits |
|
Welding is performed without heating and without subsequent heat treatment |
| Boundedly welded |
|
Welding is possible with heating up to 100–120 °C and subsequent heat treatment |
| Difficult to weld |
|
For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing |
| Not applicable for welded structures |
|
|