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R05252 Alloy vs. R30012 Cobalt

R05252 alloy belongs to the otherwise unclassified metals classification, while R30012 cobalt belongs to the cobalt alloys. 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 R05252 alloy and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 23
1.0
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 73
86
Tensile Strength: Ultimate (UTS), MPa 310
830
Tensile Strength: Yield (Proof), MPa 220
650

Thermal Properties

Latent Heat of Fusion, J/g 140
320
Specific Heat Capacity, J/kg-K 140
440
Thermal Expansion, µm/m-K 6.7
12

Otherwise Unclassified Properties

Density, g/cm3 17
8.8
Embodied Water, L/kg 600
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 120
960
Stiffness to Weight: Axial, points 6.5
14
Stiffness to Weight: Bending, points 12
23
Strength to Weight: Axial, points 5.2
26
Strength to Weight: Bending, points 6.1
22
Thermal Shock Resistance, points 17
23

Alloy Composition

Carbon (C), % 0 to 0.010
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 3.0
Molybdenum (Mo), % 0 to 0.020
0 to 1.0
Nickel (Ni), % 0 to 0.010
0 to 3.0
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.015
0
Silicon (Si), % 0 to 0.0050
0 to 2.0
Tantalum (Ta), % 88.8 to 91
0
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 9.0 to 11
7.5 to 9.5