AL7-4

Engine parts; sealed alloy.

Classification

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

Chemical composition

Standard Si, % Cu, % Al, %
GOST 21488-97 6.7–7.3 3.8–4.2 88.5–89.5

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Alloy 274.4 4

Standards

Standard Description
GOST 21488-97

Description of chemical elements

Element Units of measurement Description
Si % Silicon
Cu % Copper
Al % Aluminium

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\epsilon_L$$ % Elongation at break (longitudinal)