Alloy Steel 7075 - widely used in the Aerospace industry

Aluminium Alloy 7075

7075 – ASTM B209 | AMS-QQ-A-250/12 | AMS-QQ-A-250/13 | AMS-QQ-A-225/9 | AMS-QQ-A-200/11 | AMS-QQ-A-200/15 | AMS-WWT-700/7 | AMS4045 | AMS4048 | AMS4049 | AMS4078 | AMS4123 | AMS4124 | AMS4154 | AMS4169

Product description

As an alloy that offers a superior strength-to-weight ratio than that of steel, 7075 is an aluminium alloy that contains zinc as the primary alloying element. Although it can be purchased in a number of different tempers, including 7075-T651 aluminium, 7075-T7351 aluminium, and 7075-0, each temper displays a unique set of properties.

Grade 7075 is easy to work with and machinable. General welding is not recommended with 7075 aluminium alloy. However, you may achieve desirable results when applying resistance welding to the alloy. The application of arc or gas welding may lower the alloy’s natural anti-corrosion properties.

The first 7075 was developed by Japanese company Sumitomo Metal in 1936. 7075 was used for the Zero fighter’s air frame of the Imperial Japanese Navy in pre-war times.

7075 is widely used for construction of aircraft structures, such as wings and fuselages. Its strength and light weight are also desirable in other fields. Rock climbing equipment and bicycle components are commonly made from 7075 aluminium alloy. The bicycle industry is also using 7005 and 6061 aluminium alloys. Hobby grade R/C’s commonly use 7075-T6 and 6061 for chassis plates. One interesting use for 7075 is in the manufacture of M16 rifles for the American military.

Technical Specification

Specification Material Publication Date
AMS-QQ-A-250/12 Aluminum Alloy 7075, Plate and Sheet 24/04/2007
AMS-QQ-A-250/13 Aluminum Alloy Alclad 7075, Plate and Sheet 24/04/2007
AMS-QQ-A-225/9 Aluminum Alloy 7075, Bar, Rod, Wire, and Special Shapes; Rolled, Drawn, or Cold Finished 19/05/2010
AMS-QQ-A-200/11 Aluminum Alloy 7075, Bar, Rod, Shapes, Tube, and Wire, Extruded 24/04/2007
AMS-QQ-A-200/15 Aluminum Alloy Bar, Rod, and Shapes, Extruded, 7075-T76 Improved Exfoliation Resistance 01/07/1997
AMS-WWT-700/7 Tube, Aluminum Alloy, Drawn, Seamless, 7075 01/07/2001
AMS4045 Aluminum Alloy Sheet and Plate 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr 7075: (-T6 Sheet, -T651 Plate) Solution and Precipitation Heat Treated 01/11/1968
AMS4048 Aluminum Alloy Sheet and Plate, Alclad 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (Alclad 7075-O) Annealed or when specified, “As Fabricated” (Alclad 7075-F) 01/10/1951
AMS4049 Aluminum Alloy, Sheet and Plate, Alclad 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (Alclad 7075; -T6 Sheet - T651 Plate) Solution and Precipitation Heat Treated 01/11/1968
AMS4078 Aluminum Alloy Sheet and Plate 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr 7075: (-T73 Sheet, -T7351 Plate) Solution Heat Treated and Overaged 01/07/1992
AMS4123 Aluminum Alloy, Rolled or Cold Finished Bars and Rods (7075-T651) Solution and Precipitation Heat Treated 01/05/1968
AMS4124 Aluminum Alloy, Rolled or Cold Finished Bars, Rods, and Wire 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-T73, T7351) Solution Heat Treated, Stress Relieved by Stretching, and Overaged 01/04/1967
AMS4154 Aluminum Alloy, Extrusions 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-T6, 7075-T6510, 7075-T6511) Solution Heat Treated, Stress Relieved by Stretching when Required and Precipitation Heat Treated 01/10/1945
AMS4169 Aluminum Alloy, Extrusions 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-T6511) Solution Heat Treated, Stress Relieved by Stretching, Straightened and Precipitation Heat Treated 01/06/1960

A four-digit numerical designation system, developed by the Aluminium Association, is used to designate wrought aluminium and aluminium alloys. The first digit defines the major alloying element in the 2xxx through 8xxx alloy series, the second digit in the designation indicates the alloy modification. When the second digit is zero, it indicates the original alloy. The numbers 1 through 9, assigned consecutively, indicate modifications of the original alloy. Explicit rules have been established for determining whether a proposed composition is merely a modification of a previously registered alloy or if it is an entirely new alloy. The last two of the four digits in the 2xxx through 8xxx series have no special significance but serve only to identify the different alloys in the series.

Technical Data

Mechanicals Chemistry
SpecificationTensile StrengthYield StrengthElongation
O Temper40 KSI Minimum21 KSI Minimum10%
T65176 KSI Minimum64 KSI Minimum5%
T735166 KSI Minimum52 KSI Minimum6%
ElementLower %Upper %
Zinc5.1006.100
Manganese-0.300
Silicon-0.400
Copper1.2002.000
Magnesium2.1002.900
Chromium0.1800.280
Molybdenum--
Columbium (Niobium)--
Titanium-0.200
AluminiumRemainderRemainder
Cobalt--
Iron-0.500
Nickel--

Aerocom Stock List

Sheet & Plate Bar
T6 CLAD
Thickness (Inches)AMS QQA250/13
0.025X
0.032X
0.040X
0.050X
0.063X
Temper
Diameter (Inches)T7351T6511
0.500X
0.750XX
1.000XX
1.250XX
1.500XX
1.750X
2.000X
2.500X
3.000X

Our Approvals

Leonardo Aerostructures Leonardo Aircraft Leonardo Helicopters Airbus Helicopters
UTC SAFRAN GE Power ISO9001:2015
AS9120B Westland SQA50 Britten-Norman

Other Information