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C84400 Valve Metal vs. 7005 Aluminum

C84400 valve metal belongs to the copper alloys classification, while 7005 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 7005 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
70
Elongation at Break, % 19
10 to 20
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 39
26
Tensile Strength: Ultimate (UTS), MPa 230
200 to 400
Tensile Strength: Yield (Proof), MPa 110
95 to 350

Thermal Properties

Latent Heat of Fusion, J/g 180
380
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 1000
640
Melting Onset (Solidus), °C 840
610
Specific Heat Capacity, J/kg-K 370
880
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 43
Electrical Conductivity: Equal Weight (Specific), % IACS 17
110 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 29
9.5
Density, g/cm3 8.8
2.9
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 46
150
Embodied Water, L/kg 340
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
32 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 58
65 to 850
Stiffness to Weight: Axial, points 6.6
13
Stiffness to Weight: Bending, points 18
47
Strength to Weight: Axial, points 7.2
19 to 38
Strength to Weight: Bending, points 9.4
26 to 41
Thermal Diffusivity, mm2/s 22
54 to 65
Thermal Shock Resistance, points 8.3
8.7 to 18

Alloy Composition

Aluminum (Al), % 0 to 0.0050
91 to 94.7
Antimony (Sb), % 0 to 0.25
0
Chromium (Cr), % 0
0.060 to 0.2
Copper (Cu), % 78 to 82
0 to 0.1
Iron (Fe), % 0 to 0.4
0 to 0.4
Lead (Pb), % 6.0 to 8.0
0
Magnesium (Mg), % 0
1.0 to 1.8
Manganese (Mn), % 0
0.2 to 0.7
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0 to 0.35
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 2.3 to 3.5
0
Titanium (Ti), % 0
0.010 to 0.060
Zinc (Zn), % 7.0 to 10
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.2
Residuals, % 0
0 to 0.15