AL4 (AK9ch)
For the manufacture of parts of medium and high loading; The alloy has a high tightness. Because of the increased tendency to gas saturation and the formation of porosity, it is recommended to apply crystallization under pressure to obtain castings. The alloy based on the aluminum-silicon-magnesium (silumin) system
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Aluminum, aluminum alloys |
Foundry aluminum alloys |
Chemical composition
| Standard |
Fe, % |
Si, % |
Be, % |
Sn, % |
Mg, % |
Mn, % |
Cu, % |
Zn, % |
Al, % |
Pb, % |
|---|
| GOST 1583-93 |
< 1 |
8–10.5 |
< 0.1 |
< 0.01 |
0.17–0.3 |
0.2–0.5 |
< 0.1 |
< 0.2 |
87.2–91.63 |
< 0.05 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$E\cdot 10^{9}$$, $$MPa$$ |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\varkappa$$, $$\frac{W}{m\cdot K}$$ |
$$\rho$$, $$\frac{kg}{m^3}$$ |
$$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ |
$$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|
| 20 |
0.7 |
|
|
2650 |
|
46.8 |
| 100 |
|
21.7 |
155 |
|
755 |
|
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{Y}$$, $$MPa$$ |
$$\sigma_{0.5}$$, $$MPa$$ |
$$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ |
Treatment |
|---|
| Casting |
|
|
|
in sandy form |
260 |
200 |
4 |
500 |
|
| Casting |
|
|
|
under pressure |
290 |
160 |
2 |
|
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Alloy |
|
|
70 |
Analogues
| USA |
Germany |
|---|
| 360 |
G-AlSi10Mg |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Be |
% |
Beryllium |
| Sn |
% |
Tin |
| Mg |
% |
Magnesium |
| Mn |
% |
Manganese |
| Cu |
% |
Copper |
| Zn |
% |
Zinc |
| Al |
% |
Aluminium |
| Pb |
% |
Lead |
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) |
| $$\varkappa$$ |
$$\frac{W}{m\cdot K}$$ |
Coefficient of thermal conductivity (the heat capacity of the material) |
| $$\rho$$ |
$$\frac{kg}{m^3}$$ |
The density of the material |
| $$c\cdot 10^{-3}$$ |
$$\frac{J}{kg\cdot K}$$ |
The specific heat of the material (range 20°C–T) |
| $$R\cdot 10^{-6}$$ |
$$\Omega\cdot m$$ |
Electrical resistivity |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma_{Y}$$ |
$$MPa$$ |
Yield strength |
| $$\sigma_{0.5}$$ |
$$MPa$$ |
Tensile stress required to produce a total elongation of 0.5% |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$KCU\cdot 10^{3}$$ |
$$\frac{J}{m^2}$$ |
Impact toughness |