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Rulon Bearings

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Aluminum 7075-T73; 7075-T735x
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 7000 Series Aluminum Alloy
Material Notes: General 7075 characteristics and uses (from Alcoa): Very high strength material used for highly stressed structural parts. The T7351 temper offers improved stress-corrosion cracking resistance.

Uses: Aircraft fittings, gears and shafts, fuse parts, meter shafts and gears, missile parts, regulating valve parts, worm gears, keys, aircraft, aerospace and defense applications.

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

Composition Notes:
A Zr + Ti limit of 0.25 percent maximum may be used with this alloy designation for extruded and forged products only, but only when the supplier and the purchaser have mutually agreed.
Composition information provided by the Aluminum Association and is not for design.
Key Words: AA7075-T73; AA7075-T735, UNS A97075; ISO AlZn5.5MgCu; Aluminium 7075-T73; Aluminium 7075-T735x; Al7075-T73
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Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Density 2.81 g/ccAA; Typical
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 135500 kg load with 10 mm ball. Calculated value.
Hardness, Knoop 120Converted from Brinell Hardness Value
Hardness, Rockwell A 50.5Converted from Brinell Hardness Value
Hardness, Rockwell B 82Converted from Brinell Hardness Value
Hardness, Vickers 155Converted from Brinell Hardness Value
Tensile Strength, Ultimate >= 462 MPaSheet
 505 MPa
 41.0 MPa
@Temperature 371 °C
 55.0 MPa
@Temperature 316 °C
 76.0 MPa
@Temperature 260 °C
 110 MPa
@Temperature 204 °C
 214 MPa
@Temperature 149 °C
 434 MPa
@Temperature 100 °C
 503 MPa
@Temperature 24.0 °C
 524 MPa
@Temperature -28.0 °C
 545 MPa
@Temperature -80.0 °C
 634 MPa
@Temperature -196 °C
 >= 441 MPa
@Thickness 63.53 - 76.2 mm		Plate; T7351
 >= 455 MPa
@Thickness 50.83 - 63.5 mm		Plate; T7351
 >= 476 MPa
@Thickness 6.35 - 50.8 mm		Plate; T7351
Tensile Strength, Yield >= 386 MPaSheet
 435 MPa
 >= 338 MPa
@Thickness 63.53 - 76.2 mm		Plate; T7351
 >= 359 MPa
@Thickness 50.83 - 63.5 mm		Plate; T7351
 >= 393 MPa
@Thickness 6.35 - 50.8 mm		Plate; T7351
 32.0 MPa
@Strain 0.2 %,
Temperature 271 °C
 45.0 MPa
@Strain 0.2 %,
Temperature 316 °C
 62.0 MPa
@Strain 0.2 %,
Temperature 260 °C
 90.0 MPa
@Strain 0.2 %,
Temperature 204 °C
 186 MPa
@Strain 0.2 %,
Temperature 149 °C
 400 MPa
@Strain 0.2 %,
Temperature 100 °C
 434 MPa
@Strain 0.2 %,
Temperature 24.0 °C
 448 MPa
@Strain 0.2 %,
Temperature -28.0 °C
 462 MPa
@Strain 0.2 %,
Temperature -80.0 °C
 496 MPa
@Strain 0.2 %,
Temperature -196 °C
Elongation at Break >= 8.0 %Sheet
 13 %
@Temperature -28.0 °C
 13 %
@Temperature 24.0 °C
 14 %
@Temperature -196 °C
 14 %
@Temperature -80.0 °C
 15 %
@Temperature 100 °C
 30 %
@Temperature 149 °C
 55 %
@Temperature 204 °C
 65 %
@Temperature 260 °C
 70 %
@Temperature 316 °C
 70 %
@Temperature 371 °C
 >= 6.0 %
@Thickness 50.83 - 63.5 mm		Plate; T7351
 >= 6.0 %
@Thickness 63.53 - 76.2 mm		Plate; T7351
 6.0 - 7.0 %
@Thickness 6.35 - 50.8 mm		Plate; T7351
 13 %
@Thickness 1.60 mm		In 5 cm
Modulus of Elasticity 72.0 GPaAverage of Tension and Compression. In Al alloys, the compressive modulus is typically 2% greater than the tensile modulus
Poissons Ratio 0.33
Fatigue Strength 150 MPa
@# of Cycles 5.00e+8
Fracture Toughness 20.0 MPa-m½Plate. K(IC) in SL direction
 20.0 MPa-m½Plate. K(IC) in T-L direction
 22.0 MPa-m½T7351; Plate; S-L; average
 20.9 - 23.1 MPa-m½T7351; Plate; S-L
 23.1 MPa-m½T7352; Forgings; S-L; average
 20.9 - 27.5 MPa-m½T7352; Forgings; S-L
 25.3 - 28.6 MPa-m½T7352; Forgings; T-L
 27.5 MPa-m½T7352; Forgings; T-L; average
 27.5 - 36.3 MPa-m½T7351; Plate; T-L
 31.9 MPa-m½T7351; Plate; T-L; average
 32.0 MPa-m½Plate. K(IC) in L-T Direction
 33.0 MPa-m½T7351; Plate; L-T
 34.1 MPa-m½T7352; Forgings; L-T; average
 29.7 - 38.5 MPa-m½T7352; Forgings; L-T
Machinability 70 %0-100 Scale of Aluminum Alloys
Shear Modulus 26.9 GPa
Shear Strength 300 MPaCalculated value.
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000430 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 13.1 µin/in-°F
@Temperature 20.0 - 100 °C		AA; Typical; average over range
 21.6 µm/m-°C
@Temperature -50.0 - 20.0 °C
 23.4 µm/m-°C
@Temperature 20.0 - 100 °C
 24.3 µm/m-°C
@Temperature 20.0 - 200 °C
 25.2 µm/m-°C
@Temperature 20.0 - 300 °C
Specific Heat Capacity 0.960 J/g-°C
Thermal Conductivity 155 W/m-K
Melting Point 890 - 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 890 °FAA; Typical
Liquidus 1175 °FAA; Typical
 
Processing PropertiesOriginal ValueComments
Annealing Temperature 775 °F
Solution Temperature 870 - 900 °F
Aging Temperature 225 °Ftwo stage treatment - second stage 325 to 350°F
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 87.1 - 91.4 %As remainder
Chromium, Cr 0.18 - 0.28 %
Copper, Cu 1.2 - 2.0 %
Iron, Fe <= 0.50 %
Magnesium, Mg 2.1 - 2.9 %
Manganese, Mn <= 0.30 %
Other, each <= 0.05 %
Other, total <= 0.15 %
Silicon, Si <= 0.40 %
Titanium, Ti <= 0.20 %
Zinc, Zn 5.1 - 6.1 %

References for this datasheet.

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