Elemental content

Minimum

Maximum

Weight (%)

Silicon

0.4

0.8

Iron

-

0.7

Copper

0.15

0.4

Manganese

-

0.15

Magnesium

0.8

1.2

Chromium

0.04

0.35

Zinc

-

0.25

Titanium

-

0.15

Other elements

no more than 0.05% each, 0.15% total

Remainder Aluminum

95.85 - 98.56