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Metalmen Sales

Aluminum 7175-T736; 7175-T7365x
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-T736; Aluminium 7175-T7365; AA7175-T7365; Al7175-T736
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Physical PropertiesMetricEnglishComments
Density 2.80 g/cc0.101 lb/in³AA; Typical
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 145145500 kg load with 10 mm ball
Hardness, Knoop 184184Converted from Brinell Hardness Value
Hardness, Rockwell A 52.652.6Converted from Brinell Hardness Value
Hardness, Rockwell B 8686Converted from Brinell Hardness Value
Hardness, Vickers 169169Converted from Brinell Hardness Value
Tensile Strength, Ultimate 550 MPa79800 psi
 552 MPa
@Thickness 75.0 mm,
Temperature 24.0 °C
80100 psi
@Thickness 2.95 in,
Temperature 75.2 °F
Die forging
 600 MPa
@Thickness 75.0 mm,
Temperature -28.0 °C
87000 psi
@Thickness 2.95 in,
Temperature -18.4 °F
Die forging
 621 MPa
@Thickness 75.0 mm,
Temperature -80.0 °C
90100 psi
@Thickness 2.95 in,
Temperature -112 °F
Die forging
 731 MPa
@Thickness 75.0 mm,
Temperature -196 °C
106000 psi
@Thickness 2.95 in,
Temperature -321 °F
Die forging
 876 MPa
@Thickness 75.0 mm,
Temperature -253 °C
127000 psi
@Thickness 2.95 in,
Temperature -423 °F
Die forging
 552 MPa
@Treatment Temp. 24.0 °C,
Thickness 75.0 mm
80100 psi
@Treatment Temp. 75.2 °F,
Thickness 2.95 in
Die forging
Tensile Strength, Yield 485 MPa70300 psi
 503 MPa
@Thickness 75.0 mm,
Temperature 24.0 °C
73000 psi
@Thickness 2.95 in,
Temperature 75.2 °F
Die forging
 552 MPa
@Thickness 75.0 mm,
Temperature -28.0 °C
80100 psi
@Thickness 2.95 in,
Temperature -18.4 °F
Die forging
 572 MPa
@Thickness 75.0 mm,
Temperature -80.0 °C
83000 psi
@Thickness 2.95 in,
Temperature -112 °F
Die forging
 676 MPa
@Thickness 75.0 mm,
Temperature -196 °C
98000 psi
@Thickness 2.95 in,
Temperature -321 °F
Die forging
 745 MPa
@Thickness 75.0 mm,
Temperature -253 °C
108000 psi
@Thickness 2.95 in,
Temperature -423 °F
Die forging
 503 MPa
@Treatment Temp. 24.0 °C,
Thickness 75.0 mm
73000 psi
@Treatment Temp. 75.2 °F,
Thickness 2.95 in
Die forging
Elongation at Break 12 %
@Thickness 1.60 mm
12 %
@Thickness 0.0630 in
In 5 cm
 12 %
@Thickness 75.0 mm,
Temperature -253 °C
12 %
@Thickness 2.95 in,
Temperature -423 °F
Die forging
 13 %
@Thickness 75.0 mm,
Temperature -196 °C
13 %
@Thickness 2.95 in,
Temperature -321 °F
Die forging
 14 %
@Thickness 75.0 mm,
Temperature -80.0 °C
14 %
@Thickness 2.95 in,
Temperature -112 °F
Die forging
 14 %
@Thickness 75.0 mm,
Temperature 24.0 °C
14 %
@Thickness 2.95 in,
Temperature 75.2 °F
Die forging
 16 %
@Thickness 75.0 mm,
Temperature -28.0 °C
16 %
@Thickness 2.95 in,
Temperature -18.4 °F
Die forging
 14 %
@Treatment Temp. 24.0 °C,
Thickness 75.0 mm
14 %
@Treatment Temp. 75.2 °F,
Thickness 2.95 in
Die forging
Tensile Modulus 72.0 GPa10400 ksiCompressive Modulus is about 2% higher
Poissons Ratio 0.330.33Estimated from trends in similar Al alloys.
Fatigue Strength 160 MPa
@# of Cycles 5.00e+8
23200 psi
@# of Cycles 5.00e+8
Fracture Toughness >= 23.1 MPa-m½>= 21.0 ksi-in½Die Forgings; T-L; S-L
 >= 23.1 MPa-m½>= 21.0 ksi-in½Hand Forgings; S-L
 26.4 MPa-m½24.0 ksi-in½average; Hand Forgings; S-L
 >= 27.5 MPa-m½>= 25.0 ksi-in½Hand Forgings; T-L
 28.6 MPa-m½26.0 ksi-in½average; Die Forgings; T-L; S-L
 29.7 MPa-m½27.0 ksi-in½average; Hand Forgings; T-L
 >= 29.7 MPa-m½>= 27.0 ksi-in½Die Forgings; L-T
 31.0 MPa-m½28.2 ksi-in½K(IC) in S-L Direction
 >= 33.0 MPa-m½>= 30.0 ksi-in½Hand Forgings; L-T
 33.0 MPa-m½30.0 ksi-in½average; Die Forgings; L-T
 34.0 MPa-m½30.9 ksi-in½K(IC) in T-L Direction
 37.4 MPa-m½34.0 ksi-in½average; Hand Forgings; L-T
 38.0 MPa-m½34.6 ksi-in½K(IC) in L-T Direction
Shear Modulus 27.0 GPa3920 ksiEstimated from similar Al alloys.
Shear Strength 326 MPa47300 psiCalculated value.
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000430 ohm-cm0.00000430 ohm-cm
 
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
Specific Heat Capacity 0.864 J/g-°C0.207 BTU/lb-°F
Thermal Conductivity 155 W/m-K1080 BTU-in/hr-ft²-°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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