Iron-nickel-chromium alloy 24HX
An alloy with specified values of the coefficient of thermal expansion is a component of thermal bimetals.
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Precision alloys |
Thermobimetals |
Chemical composition
| Standard |
Si, % |
Mn, % |
Cr, % |
Ni, % |
P, % |
C, % |
S, % |
|---|
| GOST 10994-74 |
0.15–0.3 |
0.3–0.6 |
2–3 |
23–25 |
< 0.02 |
0.25–0.35 |
< 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 |
1.45 |
7–10 |
8040 |
480–500 |
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{Y}$$, $$MPa$$ |
d5, % |
Treatment |
|---|
| Tape |
GOST 14086-68 |
<2.0 |
Transverse |
raw, cold rolling, thin, Transverse |
500–620 |
240–270 |
22 |
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Tape |
GOST 14086-68 |
raw, cold rolling, thin, Transverse |
180–210 |
Casting and technological parameters
Limit operating modes
Properties
| Property |
|---|
| The alloy is efficient at temperatures up to -700С |
Analogues
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| 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 |
| d5 |
% |
Elongation at break |
| $$\sigma_{Y}$$ |
$$MPa$$ |
Yield strength |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
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 |