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3303 Aluminum vs. C84400 Valve Metal

3303 aluminum belongs to the aluminum alloys classification, while C84400 valve metal belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 3303 aluminum and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 23
19
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
39
Tensile Strength: Ultimate (UTS), MPa 110
230
Tensile Strength: Yield (Proof), MPa 39
110

Thermal Properties

Latent Heat of Fusion, J/g 400
180
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 650
1000
Melting Onset (Solidus), °C 620
840
Specific Heat Capacity, J/kg-K 900
370
Thermal Conductivity, W/m-K 170
72
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
16
Electrical Conductivity: Equal Weight (Specific), % IACS 140
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
29
Density, g/cm3 2.8
8.8
Embodied Carbon, kg CO2/kg material 8.1
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1180
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
36
Resilience: Unit (Modulus of Resilience), kJ/m3 11
58
Stiffness to Weight: Axial, points 14
6.6
Stiffness to Weight: Bending, points 49
18
Strength to Weight: Axial, points 11
7.2
Strength to Weight: Bending, points 18
9.4
Thermal Diffusivity, mm2/s 67
22
Thermal Shock Resistance, points 4.8
8.3

Alloy Composition

Aluminum (Al), % 96.6 to 99
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0.050 to 0.2
78 to 82
Iron (Fe), % 0 to 0.7
0 to 0.4
Lead (Pb), % 0
6.0 to 8.0
Manganese (Mn), % 1.0 to 1.5
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.6
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.3 to 3.5
Zinc (Zn), % 0 to 0.3
7.0 to 10
Residuals, % 0 to 0.15
0 to 0.7