AL7-4

Engine parts; sealed alloy.

Classification

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

Chemical composition

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

Information on suppliers

Wish to advertise here?

Mechanical properties at 20 °C

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

Standards

Standard	Description
Standard	Description
GOST 21488-97

Description of chemical elements

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

Description of mechanical properties

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