Aluminum (Al), %	97.5 to 99	97.5 to 99.4
Chromium (Cr), %	0 to 0.1	0 to 0.1
Copper (Cu), %	0 to 0.1	0 to 0.1
Iron (Fe), %	0 to 0.35	0 to 0.35
Magnesium (Mg), %	0.4 to 0.6	0.45 to 0.9
Manganese (Mn), %	0 to 0.1	0 to 0.1
Silicon (Si), %	0.6 to 0.9	0.2 to 0.6
Titanium (Ti), %	0 to 0.1	0 to 0.1
Zinc (Zn), %	0 to 0.1	0 to 0.1
Residuals, %	0 to 0.15	0 to 0.15