7475 Aluminum Plate

Alloy 7475 aluminum plates are a controlled toughness alloy whose values are 40 percent greater than alloy 7075 in the same tempers. This alloy’s corrosion resistance and fatigue behavior are also equal to, or better than, many of the other high strength aerospace alloys, and is for those applications that require a combination of high strength, superior fracture toughness and resistance to fatigue crack propagation.


  • Wings spars
  • Fuselage bulkheads
Chemical Composition Limits (WT %)
Silicon 0.10
Iron 0.12
Copper 1.2-1.9
Manganese 0.06
Magnesium 1.9-2.6
Chromium 0.18-0.25
Zinc 5.2-6.2
Titanium 0.06
Others, each 0.05
Others, total 0.15
Balance, Aluminum  
Typical Mechanical Properties
ThicknessTensile StrengthYield StrengthElongation
1.001-1.5 78 68 9

7475 Plate is available in T651, T7651 and T7351 tempers.

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