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R30012 Cobalt vs. R05240 Alloy

R30012 cobalt belongs to the cobalt alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 18 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 R05240 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
150
Elongation at Break, % 1.0
25
Poisson's Ratio 0.28
0.36
Shear Modulus, GPa 86
57
Tensile Strength: Ultimate (UTS), MPa 830
270
Tensile Strength: Yield (Proof), MPa 650
170

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Specific Heat Capacity, J/kg-K 440
190
Thermal Expansion, µm/m-K 12
6.8

Otherwise Unclassified Properties

Density, g/cm3 8.8
14
Embodied Water, L/kg 480
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
59
Resilience: Unit (Modulus of Resilience), kJ/m3 960
90
Stiffness to Weight: Axial, points 14
6.3
Stiffness to Weight: Bending, points 23
13
Strength to Weight: Axial, points 26
5.4
Strength to Weight: Bending, points 22
6.8
Thermal Shock Resistance, points 23
18

Alloy Composition

Carbon (C), % 1.4 to 2.0
0 to 0.010
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 47.5 to 64.1
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 3.0
0 to 0.010
Molybdenum (Mo), % 0 to 1.0
0 to 0.020
Nickel (Ni), % 0 to 3.0
0 to 0.010
Niobium (Nb), % 0
35 to 42
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.020
Silicon (Si), % 0 to 2.0
0 to 0.0050
Tantalum (Ta), % 0
57.9 to 65
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 7.5 to 9.5
0 to 0.050