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3105 Aluminum vs. 7204 Aluminum

Both 3105 aluminum and 7204 aluminum are aluminum alloys. They have a moderately high 94% 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 7204 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 1.1 to 20
11 to 13
Fatigue Strength, MPa 39 to 95
110 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 77 to 140
130 to 220
Tensile Strength: Ultimate (UTS), MPa 120 to 240
220 to 380
Tensile Strength: Yield (Proof), MPa 46 to 220
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 660
640
Melting Onset (Solidus), °C 640
520
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 170
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
39
Electrical Conductivity: Equal Weight (Specific), % IACS 140
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.8
2.9
Embodied Carbon, kg CO2/kg material 8.2
8.4
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
25 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
110 to 710
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 12 to 24
21 to 36
Strength to Weight: Bending, points 20 to 31
28 to 40
Thermal Diffusivity, mm2/s 68
58
Thermal Shock Resistance, points 5.2 to 11
9.4 to 16

Alloy Composition

Aluminum (Al), % 96 to 99.5
90.5 to 94.8
Chromium (Cr), % 0 to 0.2
0 to 0.3
Copper (Cu), % 0 to 0.3
0 to 0.2
Iron (Fe), % 0 to 0.7
0 to 0.35
Magnesium (Mg), % 0.2 to 0.8
1.0 to 2.0
Manganese (Mn), % 0.3 to 0.8
0.2 to 0.7
Silicon (Si), % 0 to 0.6
0 to 0.3
Titanium (Ti), % 0 to 0.1
0 to 0.2
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.4
4.0 to 5.0
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants