Back (Al-Base)

EN AW-3003 | AlMn1Cu | AA3030

Numeric designationEN AW-3003 | AA3030
Chemical designationAlMn1Cu
Etching5 % NaOH

The sheet was rolled and annealed at 600 °C. The gray precipitations are intermetallic phases, probably Al15(Fe,Mn)3(Si)2. Grain boundaries are very faintly discernible in the subsurface.