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C84400 Valve Metal vs. 2011 Aluminum

C84400 valve metal belongs to the copper alloys classification, while 2011 aluminum belongs to the aluminum 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 C84400 valve metal and the bottom bar is 2011 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
71
Elongation at Break, % 19
8.5 to 18
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 39
27
Tensile Strength: Ultimate (UTS), MPa 230
310 to 420
Tensile Strength: Yield (Proof), MPa 110
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 180
390
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 1000
640
Melting Onset (Solidus), °C 840
540
Specific Heat Capacity, J/kg-K 370
870
Thermal Conductivity, W/m-K 72
140 to 170
Thermal Expansion, µm/m-K 19
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
35 to 45
Electrical Conductivity: Equal Weight (Specific), % IACS 17
100 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 29
11
Density, g/cm3 8.8
3.1
Embodied Carbon, kg CO2/kg material 2.8
7.9
Embodied Energy, MJ/kg 46
150
Embodied Water, L/kg 340
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
29 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 58
140 to 680
Stiffness to Weight: Axial, points 6.6
13
Stiffness to Weight: Bending, points 18
44
Strength to Weight: Axial, points 7.2
27 to 37
Strength to Weight: Bending, points 9.4
32 to 40
Thermal Diffusivity, mm2/s 22
51 to 64
Thermal Shock Resistance, points 8.3
14 to 19

Alloy Composition

Aluminum (Al), % 0 to 0.0050
91.3 to 94.6
Antimony (Sb), % 0 to 0.25
0
Bismuth (Bi), % 0
0.2 to 0.6
Copper (Cu), % 78 to 82
5.0 to 6.0
Iron (Fe), % 0 to 0.4
0 to 0.7
Lead (Pb), % 6.0 to 8.0
0.2 to 0.6
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0 to 0.4
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 2.3 to 3.5
0
Zinc (Zn), % 7.0 to 10
0 to 0.3
Residuals, % 0
0 to 0.15