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EN AC-21100 Aluminum vs. AWS BCo-1

EN AC-21100 aluminum belongs to the aluminum alloys classification, while AWS BCo-1 belongs to the cobalt alloys. There are 18 material properties with values for both materials. Properties with values for just one material (13, 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 AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 27
78
Tensile Strength: Ultimate (UTS), MPa 340 to 350
700

Thermal Properties

Latent Heat of Fusion, J/g 390
420
Melting Completion (Liquidus), °C 670
1150
Melting Onset (Solidus), °C 550
1120
Specific Heat Capacity, J/kg-K 880
480
Thermal Expansion, µm/m-K 23
12

Otherwise Unclassified Properties

Density, g/cm3 3.0
8.1
Embodied Carbon, kg CO2/kg material 8.0
8.0
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1150
430

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 31 to 33
24
Strength to Weight: Bending, points 36 to 37
22
Thermal Shock Resistance, points 15
21

Alloy Composition

Aluminum (Al), % 93.4 to 95.7
0 to 0.050
Boron (B), % 0
0.7 to 0.9
Carbon (C), % 0
0.35 to 0.45
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0
46 to 54
Copper (Cu), % 4.2 to 5.2
0
Iron (Fe), % 0 to 0.19
0 to 1.0
Manganese (Mn), % 0 to 0.55
0
Nickel (Ni), % 0
16 to 18
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.18
7.5 to 8.5
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0.15 to 0.3
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.070
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0 to 0.1
0 to 0.5