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7204 Aluminum vs. 3303 Aluminum

Both 7204 aluminum and 3303 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is 7204 aluminum and the bottom bar is 3303 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 11 to 13
23
Fatigue Strength, MPa 110 to 130
43
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 130 to 220
69
Tensile Strength: Ultimate (UTS), MPa 220 to 380
110
Tensile Strength: Yield (Proof), MPa 120 to 310
39

Thermal Properties

Latent Heat of Fusion, J/g 380
400
Maximum Temperature: Mechanical, °C 210
180
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 520
620
Specific Heat Capacity, J/kg-K 880
900
Thermal Conductivity, W/m-K 150
170
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
43
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.9
2.8
Embodied Carbon, kg CO2/kg material 8.4
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1140
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 40
20
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 710
11
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
49
Strength to Weight: Axial, points 21 to 36
11
Strength to Weight: Bending, points 28 to 40
18
Thermal Diffusivity, mm2/s 58
67
Thermal Shock Resistance, points 9.4 to 16
4.8

Alloy Composition

Aluminum (Al), % 90.5 to 94.8
96.6 to 99
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.2
0.050 to 0.2
Iron (Fe), % 0 to 0.35
0 to 0.7
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0.2 to 0.7
1.0 to 1.5
Silicon (Si), % 0 to 0.3
0 to 0.6
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 4.0 to 5.0
0 to 0.3
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.15