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7475

AMS 4084 / AlZn5.5MgCu / 7475 / T61

Chemical Properties % Value
Silicon (Si)0,00 - 0,10
Chromium (Cr)0,18 - 0,25
Manganese (Mn)0,00 - 0,06
Magnesium (Mg)1,90 - 2,60
Copper (Cu)1,20 - 1,90
Titanium (Ti)0,00 - 0,06
Iron (Fe)0,00 - 0,12
Zinc (Zn)5,20 - 6,20
Aluminium (Al)Balance
Physical Properties Value
Density2,81 g/cm³
Melting Point477 °C
Thermal Expansion24,3 x 10^-6 /K
Modulus of Elasticity71,7 GPa
Thermal Conductivity138 W/m.K
Mechanical Properties Value
Proof Strength462 MPa
Yield Strength531 MPa
Shear Strength310 MPa
Elongation A50 mm%12
Modulus of Elasticity71.2 GPa
Alloy 7475 is a controlled toughness alloy developed for sheet and plate applications that require a combination of high strength, superior fracture toughness and resistance to fatigue crack propagation. Typical fracture toughness values for alloy 7475 plate are approximately 40 percent greater than alloy 7075 in the same tempers. Corrosion resistance and fatigue behavior of alloy 7475 are equal to and, in some cases, better than many of the current high strength aerospace alloys such as 7075, 7050 and 2024.

 

ALLOY DESIGNATIONS
AMS 4084, 7475 has similarities to the following standard designations and specifications ;

 

Alloy 7475, UNS A97475, ASTM B209

AlZn5.5MgCu

 

TEMPER TYPES

7475 is supplied in a wide range of tempers:
  • T61 - Solution heat-treated and then artificially aged in underageing conditions to improve formability.
  • T651 - Solution heat-treated, stress-relieved by controlled stretching and then artificially aged. The products receive no further straightening after stretching.
  • T7351 - Solution heat-treated, stress-relieved by controlled stretching and then artificially overaged in order to achieve the best stress corrosion resistance. The products receive no further straightening after stretching.
  • T76 - Solution heat-treated and then artificially overaged in order to achieve a good exfoliation corrosion resistance.
  • T761 - Solution heat-treated and then artificially overaged in order to achieve a good exfoliation corrosion resistan-ce. (applies to 7475 sheet and strip)
  • T7651 - Solution heat-treated, stress-relieved by controlled stretching and then artificially overaged in order to achieve a good exfoliation corrosion resistance. The products recieve no further straightening after stretching.
 
SUPPLIED FORMS
7475 is supplied in plate and sheet.
  • Plate
  • Sheet
DELIVERY: