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355.0-T6 Aluminum vs. 7075-T6 Aluminum

Both 355.0-T6 aluminum and 7075-T6 aluminum are aluminum alloys. Both are furnished in the T6 temper. They have a moderately high 92% 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 355.0-T6 aluminum and the bottom bar is 7075-T6 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 83
150
Elastic (Young's, Tensile) Modulus, GPa 71
70
Elongation at Break, % 2.6
7.9
Fatigue Strength, MPa 66
160
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
26
Shear Strength, MPa 210
330
Tensile Strength: Ultimate (UTS), MPa 260
560
Tensile Strength: Yield (Proof), MPa 170
480

Thermal Properties

Latent Heat of Fusion, J/g 470
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 150
130
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
33
Electrical Conductivity: Equal Weight (Specific), % IACS 120
98

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.0
Embodied Carbon, kg CO2/kg material 8.0
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1120
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
42
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
46
Strength to Weight: Axial, points 27
51
Strength to Weight: Bending, points 33
50
Thermal Diffusivity, mm2/s 60
50
Thermal Shock Resistance, points 12
24

Alloy Composition

Aluminum (Al), % 90.3 to 94.1
86.9 to 91.4
Chromium (Cr), % 0 to 0.25
0.18 to 0.28
Copper (Cu), % 1.0 to 1.5
1.2 to 2.0
Iron (Fe), % 0 to 0.6
0 to 0.5
Magnesium (Mg), % 0.4 to 0.6
2.1 to 2.9
Manganese (Mn), % 0 to 0.5
0 to 0.3
Silicon (Si), % 4.5 to 5.5
0 to 0.4
Titanium (Ti), % 0 to 0.25
0 to 0.2
Zinc (Zn), % 0 to 0.35
5.1 to 6.1
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15