ML4
parts of engines and other units operating in conditions of high corrosion resistance, static and dynamic loads; max operating temperature: 150 ° C -Duration 250 ° C -kratkovremennaya
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Magnesium |
Foundry magnesium alloys |
Chemical composition
| Standard |
Fe, % |
Si, % |
Be, % |
Mg, % |
Mn, % |
Cu, % |
Zn, % |
Ni, % |
Zr, % |
Al, % |
|---|
| GOST 2856-79 |
< 0.06 |
< 0.25 |
< 0.002 |
88.4–92.85 |
0.15–0.5 |
< 0.1 |
2–3.5 |
< 0.01 |
< 0.002 |
5–7 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$E\cdot 10^{9}$$, $$MPa$$ |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\varkappa$$, $$\frac{W}{m\cdot K}$$ |
$$\rho$$, $$\frac{kg}{m^3}$$ |
$$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ |
|---|
| 20 |
43 |
|
79.5 |
1830 |
1.0467 |
| 100 |
|
27.6 |
|
|
|
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{P}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\psi$$, % |
Treatment |
|---|
|
|
|
|
|
250–255 |
85–115 |
6–9 |
8–13 |
|
| Casting |
GOST 2856-79 |
|
|
in sandy form |
160 |
80 |
3 |
|
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
|
|
|
500–750 |
Casting and technological parameters
| linear shrinkage, % |
the temperature of the casting, °C |
the crystallization temperature, °C |
|---|
| 1.2–1.4 |
720–800 |
610–400 |
Analogues
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Be |
% |
Beryllium |
| Mg |
% |
Magnesium |
| Mn |
% |
Manganese |
| Cu |
% |
Copper |
| Zn |
% |
Zinc |
| Ni |
% |
Nickel |
| Zr |
% |
Zirconium |
| Al |
% |
Aluminium |
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) |
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 |
| linear shrinkage |
% |
The difference between model dimensions and the model casting |
| the temperature of the casting |
°C |
The temperature of the molten polymer is extruded from the heating cylinder into the mold |
| the crystallization temperature |
°C |
The temperature at which the free energies of liquid and solid States of the metal is equal to |