Back (Al-Base)

EN AC-42200 | AlSi7Mg0,6 | A357.0 Sand casting

Numeric designationEN AC-42200 | A357.0
Chemical designationAlSi7Mg0,6
StateSandguss
Etching5 % NaOH

Dendritic casting structure of Al mixed crystal, Al-Si eutectic in between. The silicon precipitations, which are very fine and round due to strontium refinement, appear dark gray. Occasionally intermetallic phases are found in a slightly lighter gray tone.