The particular material used, 7075 aluminum, is a readily available alloy of aluminum, zinc, {TAIL ~ magnesium}, {HEAD ~ copper} and chromium 
The particular material used , 7075 aluminum , is a readily available alloy of aluminum , zinc , { TAIL ~ magnesium } , { HEAD ~ copper } and chromium
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH