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R30012 Cobalt vs. Grade 704C Zirconium

R30012 cobalt belongs to the cobalt alloys classification, while grade 704C zirconium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R30012 cobalt and the bottom bar is grade 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
97
Elongation at Break, % 1.0
11
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 86
36
Tensile Strength: Ultimate (UTS), MPa 830
470
Tensile Strength: Yield (Proof), MPa 650
310

Thermal Properties

Latent Heat of Fusion, J/g 320
240
Specific Heat Capacity, J/kg-K 440
270
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 12
5.9

Otherwise Unclassified Properties

Density, g/cm3 8.8
6.7
Embodied Water, L/kg 480
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
48
Resilience: Unit (Modulus of Resilience), kJ/m3 960
490
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 26
20
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 3.8
12
Thermal Shock Resistance, points 23
58

Alloy Composition

Carbon (C), % 1.4 to 2.0
0 to 0.1
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 47.5 to 64.1
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 0 to 3.0
0 to 0.3
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 2.0
0
Tin (Sn), % 0
1.0 to 2.0
Tungsten (W), % 7.5 to 9.5
0
Zirconium (Zr), % 0
92.9 to 99