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328.0-T6 Aluminum vs. 7075-T6 Aluminum

Both 328.0-T6 aluminum and 7075-T6 aluminum are aluminum alloys. Both are furnished in the T6 temper. They have a moderately high 91% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 328.0-T6 aluminum and the bottom bar is 7075-T6 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 82
150
Elastic (Young's, Tensile) Modulus, GPa 72
70
Elongation at Break, % 2.1
7.9
Fatigue Strength, MPa 55
160
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
26
Shear Strength, MPa 190
330
Tensile Strength: Ultimate (UTS), MPa 270
560
Tensile Strength: Yield (Proof), MPa 170
480

Thermal Properties

Latent Heat of Fusion, J/g 510
380
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 620
640
Melting Onset (Solidus), °C 560
480
Specific Heat Capacity, J/kg-K 890
870
Thermal Conductivity, W/m-K 120
130
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
33
Electrical Conductivity: Equal Weight (Specific), % IACS 99
98

Otherwise Unclassified Properties

Base Metal Price, % relative 10
10
Density, g/cm3 2.7
3.0
Embodied Carbon, kg CO2/kg material 7.8
8.3
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1070
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0
42
Resilience: Unit (Modulus of Resilience), kJ/m3 200
1630
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 51
46
Strength to Weight: Axial, points 28
51
Strength to Weight: Bending, points 34
50
Thermal Diffusivity, mm2/s 50
50
Thermal Shock Resistance, points 12
24

Alloy Composition

Aluminum (Al), % 84.5 to 91.1
86.9 to 91.4
Chromium (Cr), % 0 to 0.35
0.18 to 0.28
Copper (Cu), % 1.0 to 2.0
1.2 to 2.0
Iron (Fe), % 0 to 1.0
0 to 0.5
Magnesium (Mg), % 0.2 to 0.6
2.1 to 2.9
Manganese (Mn), % 0.2 to 0.6
0 to 0.3
Nickel (Ni), % 0 to 0.25
0
Silicon (Si), % 7.5 to 8.5
0 to 0.4
Titanium (Ti), % 0 to 0.25
0 to 0.2
Zinc (Zn), % 0 to 1.5
5.1 to 6.1
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15