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Aluminum 7175-T74
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 7000 Series Aluminum Alloy

Material Notes: Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.

Composition Notes:
Composition information provided by the Aluminum Association and is not for design.

Key Words: UNS A97175; Aluminium 7175-T74; AA7175-T74; Al7175-T74
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Physical PropertiesMetricEnglishComments
Density 2.80 g/cc0.101 lb/in³AA; Typical
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Ultimate 524 MPa76000 psiAA; Typical
Tensile Strength, Yield 455 MPa66000 psiAA; Typical
Elongation at Break 11 %
@Diameter 12.7 mm
11 %
@Diameter 0.500 in
AA; Typical
Modulus of Elasticity 71.7 GPa10400 ksiAA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Shear Strength 310 MPa45000 psiCalculated
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000432 ohm-cm
@Temperature 20.0 °C
0.00000432 ohm-cm
@Temperature 68.0 °F
AA; Typical
 
Thermal PropertiesMetricEnglishComments
CTE, linear  21.6 µm/m-°C
@Temperature -50.0 - 20.0 °C
12.0 µin/in-°F
@Temperature -58.0 - 68.0 °F
 23.4 µm/m-°C
@Temperature 20.0 - 100 °C
13.0 µin/in-°F
@Temperature 68.0 - 212 °F
AA; Typical; average over range
 24.3 µm/m-°C
@Temperature 20.0 - 200 °C
13.5 µin/in-°F
@Temperature 68.0 - 392 °F
 25.2 µm/m-°C
@Temperature 20.0 - 300 °C
14.0 µin/in-°F
@Temperature 68.0 - 572 °F
Thermal Conductivity 156 W/m-K1080 BTU-in/hr-ft²-°FAA; Typical at 77°F
Melting Point 477 - 635.0 °C890 - 1175 °FAA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Homogenization may raise eutectic melting temperature 20-40°F but usually does not eliminate it.
Solidus 477 °C890 °FAA; Typical
Liquidus 635.0 °C1175 °FAA; Typical
 
Processing PropertiesMetricEnglishComments
Annealing Temperature 413 °C775 °F
Solution Temperature 516 °C960 °Fmust be preceded by soak at 890 to 905°F; quench from lower temperature
Aging Temperature 121 - 177 °C250 - 350 °F
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 88 - 91.4 %88 - 91.4 %As remainder
Chromium, Cr 0.18 - 0.28 %0.18 - 0.28 %
Copper, Cu 1.2 - 2.0 %1.2 - 2.0 %
Iron, Fe <= 0.20 %<= 0.20 %
Magnesium, Mg 2.1 - 2.9 %2.1 - 2.9 %
Manganese, Mn <= 0.10 %<= 0.10 %
Other, each <= 0.05 %<= 0.05 %
Other, total <= 0.15 %<= 0.15 %
Silicon, Si <= 0.15 %<= 0.15 %
Titanium, Ti <= 0.10 %<= 0.10 %
Zinc, Zn 5.1 - 6.1 %5.1 - 6.1 %

References for this datasheet.

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