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EN AC-21100 Aluminum vs. C84400 Valve Metal

EN AC-21100 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-21100 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, % 6.2 to 7.3
19
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
39
Tensile Strength: Ultimate (UTS), MPa 340 to 350
230
Tensile Strength: Yield (Proof), MPa 210 to 240
110

Thermal Properties

Latent Heat of Fusion, J/g 390
180
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 670
1000
Melting Onset (Solidus), °C 550
840
Specific Heat Capacity, J/kg-K 880
370
Thermal Conductivity, W/m-K 130
72
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
16
Electrical Conductivity: Equal Weight (Specific), % IACS 100
17

Otherwise Unclassified Properties

Base Metal Price, % relative 11
29
Density, g/cm3 3.0
8.8
Embodied Carbon, kg CO2/kg material 8.0
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1150
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
36
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
58
Stiffness to Weight: Axial, points 13
6.6
Stiffness to Weight: Bending, points 46
18
Strength to Weight: Axial, points 31 to 33
7.2
Strength to Weight: Bending, points 36 to 37
9.4
Thermal Diffusivity, mm2/s 48
22
Thermal Shock Resistance, points 15
8.3

Alloy Composition


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Aluminum (Al), % 93.4 to 95.7
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 4.2 to 5.2
78 to 82
Iron (Fe), % 0 to 0.19
0 to 0.4
Lead (Pb), % 0
6.0 to 8.0
Manganese (Mn), % 0 to 0.55
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.18
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.3 to 3.5
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.070
7.0 to 10
Residuals, % 0 to 0.1
0 to 0.7