2A11 aluminum alloy Al Cu Mg series aluminum alloy is a type of hard aluminum that can be strengthened by heat treatment. It has moderate plasticity in quenched and quenched states, good spot welding performance, and good machinability after quenching and cold work hardening. It is often treated with anodizing and painting methods or coated with aluminum layer on the surface to improve its corrosion resistance. It is a common mold, component, fixture, etc.

Alloy grade

Si

Fe

Cu

Mn

Mg

Cr

Zn

Ti

Ni

other

AL

New brand

Old brand

0.70

0.70

3.8-4.8

0.4-0.8

0.4-0.8

——

0.30

0.15

0.10

each

total

2A11

LY11

0.05

0.10

allowance

Alloy grade, aluminum alloy grade and condition	Rm/Mpa	Rp0.2/Mpa	Elongation rate/%	Hardness/HBW α
2A11-T4	370	215	12	120