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R30012 Cobalt vs. Reactor Grade Zirconium

R30012 cobalt belongs to the cobalt alloys classification, while reactor grade zirconium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R30012 cobalt and the bottom bar is reactor grade zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
98
Elongation at Break, % 1.0
21
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 86
37
Tensile Strength: Ultimate (UTS), MPa 830
330
Tensile Strength: Yield (Proof), MPa 650
160

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Specific Heat Capacity, J/kg-K 440
270
Thermal Conductivity, W/m-K 15
22
Thermal Expansion, µm/m-K 12
5.9

Otherwise Unclassified Properties

Density, g/cm3 8.8
6.5
Embodied Water, L/kg 480
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
56
Resilience: Unit (Modulus of Resilience), kJ/m3 960
130
Stiffness to Weight: Axial, points 14
8.4
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
14
Strength to Weight: Bending, points 22
16
Thermal Diffusivity, mm2/s 3.8
13
Thermal Shock Resistance, points 23
41

Alloy Composition

Carbon (C), % 1.4 to 2.0
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 47.5 to 64.1
0
Iron (Fe), % 0 to 3.0
0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
0
Tungsten (W), % 7.5 to 9.5
0
Zirconium (Zr), % 0
99.7 to 100
Residuals, % 0
0 to 0.27