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C84400 Valve Metal vs. 2024 Aluminum

C84400 valve metal belongs to the copper alloys classification, while 2024 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 C84400 valve metal and the bottom bar is 2024 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
71
Elongation at Break, % 19
4.0 to 16
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 39
27
Tensile Strength: Ultimate (UTS), MPa 230
200 to 540
Tensile Strength: Yield (Proof), MPa 110
100 to 490

Thermal Properties

Latent Heat of Fusion, J/g 180
390
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 1000
640
Melting Onset (Solidus), °C 840
500
Specific Heat Capacity, J/kg-K 370
880
Thermal Conductivity, W/m-K 72
120
Thermal Expansion, µm/m-K 19
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
30
Electrical Conductivity: Equal Weight (Specific), % IACS 17
90

Otherwise Unclassified Properties

Base Metal Price, % relative 29
11
Density, g/cm3 8.8
3.0
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 46
150
Embodied Water, L/kg 340
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
20 to 68
Resilience: Unit (Modulus of Resilience), kJ/m3 58
70 to 1680
Stiffness to Weight: Axial, points 6.6
13
Stiffness to Weight: Bending, points 18
46
Strength to Weight: Axial, points 7.2
18 to 50
Strength to Weight: Bending, points 9.4
25 to 49
Thermal Diffusivity, mm2/s 22
46
Thermal Shock Resistance, points 8.3
8.6 to 24

Alloy Composition

Aluminum (Al), % 0 to 0.0050
90.7 to 94.7
Antimony (Sb), % 0 to 0.25
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 78 to 82
3.8 to 4.9
Iron (Fe), % 0 to 0.4
0 to 0.5
Lead (Pb), % 6.0 to 8.0
0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0
0.3 to 0.9
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0 to 0.5
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 2.3 to 3.5
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 7.0 to 10
0 to 0.25
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.15