Aluminum alloy AK7pch (AL9-1)
- Chemical composition
| Al | Aluminum | Rest |
| Be | Beryllium | <0.1 |
| B | Boron | <0.1 |
| Fe | Iron | <0.4 |
| Si | Silicon | 7.0 — 8.0 |
| Mg | Magnesium | 0.25 — 0.45 |
| Mn | Manganese | <0.1 |
| Cu | Copper | <0.1 |
| Sn | Tin | <0.005 |
| Pb | Lead | <0.03 |
| Sr | Strontium | <0.08 |
| Ti | Titanium | <0.08 |
| Zn | Zinc | <0.2 |
| Zr | Zirconium | <0.15 |
| Ot | Total impurities | <0.7 |
Casting methods:
Z — sand casting
B — Lost wax casting
K — chill casting
D — injection molding
Mark designation:
h — clean
bees — high purity
och — high purity
l — casting alloys
c — selective
For the manufacture of shaped castings; the alloy is highly tight. Technical requirements — according to GOST 1583−93
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Aluminum, aluminum alloys | Foundry aluminum alloys |
Chemical composition
| Standard | Fe, % | Si, % | B, % | Be, % | Sn, % | Mg, % | Mn, % | Ti, % | Cu, % | Zn, % | Zr, % | Al, % | Pb, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| < 0.3 | 7–8 | < 1 | < 1 | < 5 | 25–4 | < 0.1 | 0.08–0.15 | < 0.1 | < 2 | < 15 | 90.37–92.67 | < 3 |
Information on suppliers
Physical characteristics
| Temperature, °C | $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ | $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|---|---|---|---|
| 20 | 2660 | 46.7 | ||
| 100 | 21.8 | 380 |
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | δ, % | Treatment |
|---|---|---|---|---|---|---|---|
| Casting | GOST 1583-93 | 167–294 | 146 |
Analogues
| USA | Germany | Japan | France | China |
|---|---|---|---|---|
| 336 | G-AlSi7Mg | AC4CH | A-S7G03 | ZAlSi7MgA |
Standards
| Standard | Description |
|---|---|
| GOST 1583-93 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| B | % | Bor |
| Be | % | Beryllium |
| Sn | % | Tin |
| Mg | % | Magnesium |
| Mn | % | Manganese |
| Ti | % | Titan |
| Cu | % | Copper |
| Zn | % | Zinc |
| Zr | % | Zirconium |
| Al | % | Aluminium |
| Pb | % | Lead |
Description of physical characteristics
| Parameter | Units of measurement | Description |
|---|---|---|
| $$\alpha\cdot 10^{6}$$ | $$K^{-1}$$ | Coefficient of thermal (linear) expansion (range 20°C–T) |
| $$\rho$$ | $$\frac{kg}{m^3}$$ | The density of the material |
| $$c\cdot 10^{-3}$$ | $$\frac{J}{kg\cdot K}$$ | 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 |
|---|---|---|
| δ | % | Elongation after rupture |
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |