Alloy aluminum AK9ch (AL4)

Chemical composition

Al Aluminum Rest
Fe Iron 0.3 — 1.0
Si Silicon 8.0 — 10.0
Mg Magnesium 0.35 — 0.55
Mn Manganese 0.1 — 0.6
Cu Copper 0.3 — 1.5
Ni Nickel <0.3
Zn Zinc 5.0 — 7.0
Ot Total impurities <0.6

Pb + Sn <0.3

Analogs in Russia

AK9TS6 GOST 1583−93

AK9TS6r GOST 1583−93

AL12 GOST 2171−90

AK9TS6 GOST R 55375−12

for the manufacture of parts of medium and high load; the alloy is highly tight. Due to the increased propensity for gas saturation and the formation of porosity, crystallization under pressure is recommended for castings. Alloy based on the aluminum — silicon — magnesium system (silumin)

Classification

Country Section Category
CIS, Russia, Ukraine Aluminum, aluminum alloys Foundry aluminum alloys

Chemical composition

Standard Fe, % Si, % Be, % Sn, % Mg, % Mn, % Cu, % Zn, % Ni, % Al, % Pb, %
GOST 1583-93 < 1 8–10.5 < 0.1 < 0.01 0.17–0.3 0.2–0.5 < 0.3 < 0.3 < 0.1 86.84–91.63 < 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 d5, % Treatment
Chill casting GOST 1583-93 235 3 Hardening and artificial aging
Chill casting GOST 1583-93 147 2

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Heat-treated steel. GOST 1583-93 50–70

Analogues

USA Germany
360 G-AlSi10Mg

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
Ni % Nickel
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
d5 % Elongation at break
\sigma _{U} MPa Ultimate tensile strength