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3105 Aluminum vs. 7050 Aluminum

Both 3105 aluminum and 7050 aluminum are aluminum alloys. They have a moderately high 91% of their average alloy composition in common. There are 30 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 3105 aluminum and the bottom bar is 7050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 1.1 to 20
2.2 to 12
Fatigue Strength, MPa 39 to 95
130 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 77 to 140
280 to 330
Tensile Strength: Ultimate (UTS), MPa 120 to 240
490 to 570
Tensile Strength: Yield (Proof), MPa 46 to 220
390 to 500

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 180
190
Melting Completion (Liquidus), °C 660
630
Melting Onset (Solidus), °C 640
490
Specific Heat Capacity, J/kg-K 900
860
Thermal Conductivity, W/m-K 170
140
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
35
Electrical Conductivity: Equal Weight (Specific), % IACS 140
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.8
3.1
Embodied Carbon, kg CO2/kg material 8.2
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
10 to 55
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
1110 to 1760
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
45
Strength to Weight: Axial, points 12 to 24
45 to 51
Strength to Weight: Bending, points 20 to 31
45 to 50
Thermal Diffusivity, mm2/s 68
54
Thermal Shock Resistance, points 5.2 to 11
21 to 25

Alloy Composition

Aluminum (Al), % 96 to 99.5
87.3 to 92.1
Chromium (Cr), % 0 to 0.2
0 to 0.040
Copper (Cu), % 0 to 0.3
2.0 to 2.6
Iron (Fe), % 0 to 0.7
0 to 0.15
Magnesium (Mg), % 0.2 to 0.8
1.9 to 2.6
Manganese (Mn), % 0.3 to 0.8
0 to 0.1
Silicon (Si), % 0 to 0.6
0 to 0.12
Titanium (Ti), % 0 to 0.1
0 to 0.060
Zinc (Zn), % 0 to 0.4
5.7 to 6.7
Zirconium (Zr), % 0
0.080 to 0.15
Residuals, % 0
0 to 0.15