D21 (1210)

For the manufacture of engine parts and power components.

Country	Section	Category
CIS, Russia, Ukraine	Aluminum, aluminum alloys	Wrought Aluminum Alloys

Standard	Fe, %	Si, %	Mg, %	Mn, %	Ti, %	Cu, %	Zn, %	Al, %
GOST 4784-97	< 0.3	< 0.3	0.25–0.45	0.4–0.8	0.1–0.2	6–7	< 0.1	90.75–93.25

Rolling	Standard	Size, mm	Tension	Classifiers	$$\sigma _{U}$$, $$MPa$$	$$\sigma_{P}$$, $$MPa$$	$$\epsilon_L$$, %	Treatment
Round					400	260	6

Rolling	Standard	Classifiers	Value, HBW
Alloy			100

Standard	Description
OST 1 90048-90
GOST 4784-97

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