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3303 Aluminum vs. 4145 Aluminum

Both 3303 aluminum and 4145 aluminum are aluminum alloys. They have 86% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 3303 aluminum and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
73
Elongation at Break, % 23
2.2
Fatigue Strength, MPa 43
48
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
28
Shear Strength, MPa 69
69
Tensile Strength: Ultimate (UTS), MPa 110
120
Tensile Strength: Yield (Proof), MPa 39
68

Thermal Properties

Latent Heat of Fusion, J/g 400
540
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 650
590
Melting Onset (Solidus), °C 620
520
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 170
100
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
26
Electrical Conductivity: Equal Weight (Specific), % IACS 140
84

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.8
2.8
Embodied Carbon, kg CO2/kg material 8.1
7.6
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1180
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 11
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
50
Strength to Weight: Axial, points 11
12
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 67
42
Thermal Shock Resistance, points 4.8
5.5

Alloy Composition


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Aluminum (Al), % 96.6 to 99
83 to 87.4
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0.050 to 0.2
3.3 to 4.7
Iron (Fe), % 0 to 0.7
0 to 0.8
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 1.0 to 1.5
0 to 0.15
Silicon (Si), % 0 to 0.6
9.3 to 10.7
Zinc (Zn), % 0 to 0.3
0 to 0.2
Residuals, % 0 to 0.15
0 to 0.15