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