Other series: The 3rd and fourth digits recognize various alloys throughout the sequence, but they've no numerical importance. Among the aluminum alloys with the highest energy, although the corrosion resistance is weak.The coating materials with 7072 can increase its corrosion resistance, but the expense is increased. The Intercontinental Alloy Designation https://chanceepjct.blogaritma.com/30901807/top-guidelines-of-aluminium-alloys