Aluminum alloy AK8l (VAL5, AL34)
Chemical composition
| Al | Aluminum | Rest |
| Be | Beryllium | <0.0005 |
| Fe | Iron | <1.0 |
| Si | Silicon | 6.0 — 8.0 |
| Mg | Magnesium | 0.20 — 0.55 |
| Mn | Manganese | 0.2 — 0.6 |
| Cu | Copper | <1.5 |
| As | Arsenic | <0.015 |
| Ni | Nickel | <0.3 |
| Pb | Lead | <0.15 |
| Zn | Zinc | <0.3 |
Alloy based on the aluminum — silicon — magnesium system (silumin). The alloy has a high tightness. It is used for casting body parts operating under high internal pressure of liquids and gases.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Aluminum, aluminum alloys | Foundry aluminum alloys |
Chemical composition
| Standard | Fe, % | Si, % | B, % | Be, % | Mg, % | Mn, % | Ti, % | Cu, % | Zn, % | Zr, % |
|---|---|---|---|---|---|---|---|---|---|---|
| GOST 1583-93 | < 0.6 | 6.5–8.5 | < 0.1 | 0.15–0.4 | 0.35–0.55 | < 0.1 | 0.1–0.3 | < 0.3 | < 0.3 | < 0.2 |
Information on suppliers
Physical characteristics
| Temperature, °C | $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ | $$\varkappa$$, $$\frac{W}{m\cdot K}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ | Cp, Дж/кг·К |
|---|---|---|---|---|---|
| 20 | 2630 | 46.2 | |||
| 100 | 20.7 | 155 | 840 |
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | δ, % | Treatment |
|---|---|---|---|---|---|---|---|
| Chill casting | GOST 1583-93 | 274–333 | 4–6 | ||||
| Sand casting | GOST 1583-93 | 255–294 | 2–4 | ||||
| Casting | GOST 1583-93 | 176–206 | 1–2.5 |
Analogues
| USA | France | China |
|---|---|---|
| 358 | A-S7G | ZAlSi8MgBe |
Standards
| Standard | Description |
|---|---|
| GOST 1583-93 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| B | % | Bor |
| Be | % | Beryllium |
| Mg | % | Magnesium |
| Mn | % | Manganese |
| Ti | % | Titan |
| Cu | % | Copper |
| Zn | % | Zinc |
| Zr | % | Zirconium |
Description of physical characteristics
| Parameter | Units of measurement | Description |
|---|---|---|
| Cp | Дж/кг·К | Specific heat of material |
| $$\alpha\cdot 10^{6}$$ | $$K^{-1}$$ | 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 |
| $$R\cdot 10^{-6}$$ | $$\Omega\cdot m$$ | Electrical resistivity |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| δ | % | Elongation after rupture |
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |