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R05240 Alloy vs. R31233 Cobalt

R05240 alloy belongs to the otherwise unclassified metals classification, while R31233 cobalt belongs to the cobalt alloys. There are 18 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 R05240 alloy and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
220
Elongation at Break, % 25
17
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 57
85
Tensile Strength: Ultimate (UTS), MPa 270
1020
Tensile Strength: Yield (Proof), MPa 170
420

Thermal Properties

Latent Heat of Fusion, J/g 210
320
Specific Heat Capacity, J/kg-K 190
440
Thermal Expansion, µm/m-K 6.8
13

Otherwise Unclassified Properties

Density, g/cm3 14
8.6
Embodied Water, L/kg 460
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
140
Resilience: Unit (Modulus of Resilience), kJ/m3 90
410
Stiffness to Weight: Axial, points 6.3
14
Stiffness to Weight: Bending, points 13
23
Strength to Weight: Axial, points 5.4
33
Strength to Weight: Bending, points 6.8
26
Thermal Shock Resistance, points 18
25

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.010
0.020 to 0.1
Chromium (Cr), % 0
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
1.0 to 5.0
Manganese (Mn), % 0
0.1 to 1.5
Molybdenum (Mo), % 0 to 0.020
4.0 to 6.0
Nickel (Ni), % 0 to 0.010
7.0 to 11
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0.030 to 0.12
Oxygen (O), % 0 to 0.020
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.0050
0.050 to 1.0
Sulfur (S), % 0
0 to 0.020
Tantalum (Ta), % 57.9 to 65
0
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0 to 0.050
1.0 to 3.0