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EN AC-71100 Aluminum vs. C84400 Valve Metal

EN AC-71100 aluminum belongs to the aluminum alloys classification, while C84400 valve metal belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (4, 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-71100 aluminum and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
100
Elongation at Break, % 1.1
19
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
39
Tensile Strength: Ultimate (UTS), MPa 260
230
Tensile Strength: Yield (Proof), MPa 230
110

Thermal Properties

Latent Heat of Fusion, J/g 490
180
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 580
1000
Melting Onset (Solidus), °C 520
840
Specific Heat Capacity, J/kg-K 860
370
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
16
Electrical Conductivity: Equal Weight (Specific), % IACS 97
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
29
Density, g/cm3 2.9
8.8
Embodied Carbon, kg CO2/kg material 7.4
2.8
Embodied Energy, MJ/kg 140
46
Embodied Water, L/kg 1010
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
36
Resilience: Unit (Modulus of Resilience), kJ/m3 360
58
Stiffness to Weight: Axial, points 14
6.6
Stiffness to Weight: Bending, points 47
18
Strength to Weight: Axial, points 25
7.2
Strength to Weight: Bending, points 31
9.4
Thermal Shock Resistance, points 12
8.3

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0 to 0.1
78 to 82
Iron (Fe), % 0 to 0.3
0 to 0.4
Lead (Pb), % 0
6.0 to 8.0
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 7.5 to 9.5
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.3 to 3.5
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 9.0 to 10.5
7.0 to 10
Residuals, % 0
0 to 0.7