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3105 Aluminum vs. 7049A Aluminum

Both 3105 aluminum and 7049A aluminum are aluminum alloys. They have 89% 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 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
71
Elongation at Break, % 1.1 to 20
5.0 to 5.7
Fatigue Strength, MPa 39 to 95
180
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 77 to 140
340 to 350
Tensile Strength: Ultimate (UTS), MPa 120 to 240
580 to 590
Tensile Strength: Yield (Proof), MPa 46 to 220
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 660
640
Melting Onset (Solidus), °C 640
430
Specific Heat Capacity, J/kg-K 900
850
Thermal Conductivity, W/m-K 170
130
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
40
Electrical Conductivity: Equal Weight (Specific), % IACS 140
120

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
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
1800 to 1990
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
44
Strength to Weight: Axial, points 12 to 24
52 to 53
Strength to Weight: Bending, points 20 to 31
50 to 51
Thermal Diffusivity, mm2/s 68
50
Thermal Shock Resistance, points 5.2 to 11
25

Alloy Composition

Aluminum (Al), % 96 to 99.5
84.6 to 89.5
Chromium (Cr), % 0 to 0.2
0.050 to 0.25
Copper (Cu), % 0 to 0.3
1.2 to 1.9
Iron (Fe), % 0 to 0.7
0 to 0.5
Magnesium (Mg), % 0.2 to 0.8
2.1 to 3.1
Manganese (Mn), % 0.3 to 0.8
0 to 0.5
Silicon (Si), % 0 to 0.6
0 to 0.4
Titanium (Ti), % 0 to 0.1
0 to 0.25
Zinc (Zn), % 0 to 0.4
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15