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EN AC-42100 Aluminum vs. C84400 Valve Metal

EN AC-42100 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 EN AC-42100 aluminum and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 3.4 to 9.0
19
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
39
Tensile Strength: Ultimate (UTS), MPa 280 to 290
230
Tensile Strength: Yield (Proof), MPa 210 to 230
110

Thermal Properties

Latent Heat of Fusion, J/g 500
180
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 610
1000
Melting Onset (Solidus), °C 600
840
Specific Heat Capacity, J/kg-K 910
370
Thermal Conductivity, W/m-K 150
72
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
16
Electrical Conductivity: Equal Weight (Specific), % IACS 140
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
29
Density, g/cm3 2.6
8.8
Embodied Carbon, kg CO2/kg material 8.0
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1110
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.1 to 23
36
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 370
58
Stiffness to Weight: Axial, points 15
6.6
Stiffness to Weight: Bending, points 53
18
Strength to Weight: Axial, points 30 to 31
7.2
Strength to Weight: Bending, points 37 to 38
9.4
Thermal Diffusivity, mm2/s 66
22
Thermal Shock Resistance, points 13
8.3

Alloy Composition

Aluminum (Al), % 91.3 to 93.3
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0 to 0.050
78 to 82
Iron (Fe), % 0 to 0.19
0 to 0.4
Lead (Pb), % 0
6.0 to 8.0
Magnesium (Mg), % 0.25 to 0.45
0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 6.5 to 7.5
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.3 to 3.5
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
7.0 to 10
Residuals, % 0
0 to 0.7