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Commercially Pure Zirconium vs. AWS BCo-1

Commercially pure zirconium belongs to the otherwise unclassified metals classification, while AWS BCo-1 belongs to the cobalt alloys. There are 14 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is commercially pure zirconium and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
200
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 36
78
Tensile Strength: Ultimate (UTS), MPa 430
700

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Specific Heat Capacity, J/kg-K 270
480
Thermal Expansion, µm/m-K 5.5
12

Otherwise Unclassified Properties

Density, g/cm3 6.7
8.1
Embodied Water, L/kg 450
430

Common Calculations

Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 19
22
Thermal Shock Resistance, points 56
21

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0.7 to 0.9
Carbon (C), % 0 to 0.050
0.35 to 0.45
Chromium (Cr), % 0 to 0.2
18 to 20
Cobalt (Co), % 0
46 to 54
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.2
0 to 1.0
Nickel (Ni), % 0
16 to 18
Nitrogen (N), % 0 to 0.025
0
Oxygen (O), % 0 to 0.16
0
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
7.5 to 8.5
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zirconium (Zr), % 94.7 to 100
0 to 0.050
Residuals, % 0
0 to 0.5