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C84400 Valve Metal vs. 8090 Aluminum

C84400 valve metal belongs to the copper alloys classification, while 8090 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 8090 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
67
Elongation at Break, % 19
3.5 to 13
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 39
25
Tensile Strength: Ultimate (UTS), MPa 230
340 to 490
Tensile Strength: Yield (Proof), MPa 110
210 to 420

Thermal Properties

Latent Heat of Fusion, J/g 180
400
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 1000
660
Melting Onset (Solidus), °C 840
600
Specific Heat Capacity, J/kg-K 370
960
Thermal Conductivity, W/m-K 72
95 to 160
Thermal Expansion, µm/m-K 19
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
20
Electrical Conductivity: Equal Weight (Specific), % IACS 17
66

Otherwise Unclassified Properties

Base Metal Price, % relative 29
18
Density, g/cm3 8.8
2.7
Embodied Carbon, kg CO2/kg material 2.8
8.6
Embodied Energy, MJ/kg 46
170
Embodied Water, L/kg 340
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
16 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 58
340 to 1330
Stiffness to Weight: Axial, points 6.6
14
Stiffness to Weight: Bending, points 18
50
Strength to Weight: Axial, points 7.2
34 to 49
Strength to Weight: Bending, points 9.4
39 to 50
Thermal Diffusivity, mm2/s 22
36 to 60
Thermal Shock Resistance, points 8.3
15 to 22

Alloy Composition

Aluminum (Al), % 0 to 0.0050
93 to 98.4
Antimony (Sb), % 0 to 0.25
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 78 to 82
1.0 to 1.6
Iron (Fe), % 0 to 0.4
0 to 0.3
Lead (Pb), % 6.0 to 8.0
0
Lithium (Li), % 0
2.2 to 2.7
Magnesium (Mg), % 0
0.6 to 1.3
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0 to 0.2
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 2.3 to 3.5
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 7.0 to 10
0 to 0.25
Zirconium (Zr), % 0
0.040 to 0.16
Residuals, % 0
0 to 0.15