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R30003 Cobalt vs. R05252 Alloy

R30003 cobalt belongs to the cobalt alloys classification, while R05252 alloy belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (11, 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 R30003 cobalt and the bottom bar is R05252 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 10 to 73
23
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 83
73
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
310
Tensile Strength: Yield (Proof), MPa 510 to 1090
220

Thermal Properties

Latent Heat of Fusion, J/g 310
140
Specific Heat Capacity, J/kg-K 450
140
Thermal Expansion, µm/m-K 13
6.7

Otherwise Unclassified Properties

Density, g/cm3 8.4
17
Embodied Water, L/kg 400
600

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 2790
120
Stiffness to Weight: Axial, points 14
6.5
Stiffness to Weight: Bending, points 24
12
Strength to Weight: Axial, points 32 to 57
5.2
Strength to Weight: Bending, points 26 to 38
6.1
Thermal Shock Resistance, points 26 to 45
17

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0 to 0.010
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 39 to 41
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 10 to 20.5
0 to 0.010
Manganese (Mn), % 1.5 to 2.5
0
Molybdenum (Mo), % 6.0 to 8.0
0 to 0.020
Nickel (Ni), % 14 to 16
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.2
0 to 0.0050
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0
88.8 to 91
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
9.0 to 11