7475

EN AW / AlZn5.5MgCu / 7475 / T651

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)5,2 - 6,20
Aluminium (Al)Balance
Physical Properties Value
Density2,81 g/cm³
Melting Point477 °C
Thermal Expansion23 x 10^-6 /K
Modulus of Elasticity71,7 GPa
Thermal Conductivity138 W/m.K
Electrical Resistivity%34 IACS
Mechanical Properties Value
Proof Strength510 MPa
Yield Strength586 MPa
Shear Strength350 MPa
Elongation A50 mm%12
Modulus of Elasticity71,7 GPa

7475 T651 aluminum alloy; It is a very  high strength material which provides superior toughness against the spread of fatigue crack and fracture. It has been developed  particularly in a controlled way for sheet and plate applications. The 7475 alloy is 40 percent higher than  7075 T651 alloy for in typical fracture toughness at the same temparatures. Corrosion resistance and fatigue behavior of 7475 alloy; Much better than mostly preferred high strength aerospace alloys such as 7075, 7050 and 2024. In some cases it is incomparable.

Referans Metal is the first company which exported 7475 T651 plates in AMS 4090 standards  from Turkey in 2007. In addition, Referans Metal is the first and only company that makes the first injection mold applications in Hadımköy and Gebze for the machine-mold industry in Turkey.

 

ALLOY DESIGNATIONS
 
7475 T651 has similarities to the following standard designations and specifications ;

Plate as; AMS 4090 

Alloy 7475, UNS A97475, AlZn5.5MgCu

 

MINIMUM FRACTURE TOUGHNESS VALUES FOR 7475 T651:

 

                                                        KIc: ksi√in.(MPa√m)
Temper              Thickness                  L-T            T-L

T651             1.250-1.500 in.       30.0 (33.0)    28.0 (30.8)
                   (31.75-38.10 mm)

 

 

Choosing Factors for 7475 T651:

 

  • Strength: Very good
  • Machining: Fair
  • Weldability: Low
  • Formability: Poor 
  • Corrosion Resistance: Normal
  • Heat Treating:Yes

 

TEMPER TYPES

EN AW 7475 is supplied in the following heat treatment types:

  • T61
  • T651
  • T7351
  • T76
  • T761
  • T7651 

 

Some Well-Known Applications for 7475 T651:

In aircraft parts, especially in the construction of wing parts and connecting devices.

Airframe.

As an interdepartmental protective set in closed systems under high dynamic force.

 

SUPPLIED FORMS
 
7475 T651 is supplied in plate and sheet form.
 
  • Plate
  • Sheet
DELIVERY:
Mechanical Properties
Thickness (mm) Proof Strength (Min.) Yield Strength (Min.) Elongation A50 mm %
over 6.35 up to & incl. 12.67 462 MPa 538 MPa 10
over 25.42 up to & incl. 38.10 469 MPa 542 MPa 9