Precision Alloy 25NU
It is used for the manufacture of parts of devices that require dimensional stability in the range of climatic temperatures; in the range from -60 to +100 ºC
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Precision alloys |
With high electrical resistance |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Ni, % |
Al, % |
Nb, % |
ET, % |
|---|
| GOST 10994-74 |
59.65–63.4 |
< 0.4 |
< 0.6 |
24.5–25.5 |
8.4–9.6 |
3.7–4.2 |
< 0.05 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$E\cdot 10^{9}$$, $$MPa$$ |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\rho$$, $$\frac{kg}{m^3}$$ |
|---|
| 20 |
145 |
6.8–7.4 |
8200 |
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{Y}$$, $$MPa$$ |
d5, % |
Treatment |
|---|
| Tape |
GOST 10994-74 |
<2.0 |
Transverse |
raw, cold rolling, thin, Transverse |
< 950 |
< 600 |
5–8 |
|
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| ET |
% |
Total other items |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Ni |
% |
Nickel |
| Al |
% |
Aluminium |
| Nb |
% |
Niobium |
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 |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| d5 |
% |
Elongation at break |
| $$\sigma_{Y}$$ |
$$MPa$$ |
Yield strength |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |