Thank you for the fast reply, and the special release.
As for the selection of material…
• Al 7075 is the closest equivalent in terms of chemical composition, compared to AlZnMgCU1.5…
• Normally, in terms of selecting the material, we will make the comparison and decision ourselves
o We will have either the same material or a slightly higher grade in the same category (Martensitic, Ferritic, Austenitic) as the drawing requirement
• If an equivalent is not available, requiring an alternative material usually of lower grade, we will ask the respective Purchase and/or R&D accordingly.