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2011 Aluminum vs. C84400 Valve Metal

2011 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 2011 aluminum and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Aluminum (Al), % 91.3 to 94.6
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Bismuth (Bi), % 0.2 to 0.6
0
Copper (Cu), % 5.0 to 6.0
78 to 82
Iron (Fe), % 0 to 0.7
0 to 0.4
Lead (Pb), % 0.2 to 0.6
6.0 to 8.0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.4
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
0 to 0.7