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R30016 Cobalt vs. C86700 Bronze

R30016 cobalt belongs to the cobalt alloys classification, while C86700 bronze belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R30016 cobalt and the bottom bar is C86700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 8.4
17
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 85
41
Tensile Strength: Ultimate (UTS), MPa 1010
630
Tensile Strength: Yield (Proof), MPa 580
250

Thermal Properties

Latent Heat of Fusion, J/g 320
180
Melting Completion (Liquidus), °C 1360
880
Melting Onset (Solidus), °C 1270
860
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 15
89
Thermal Expansion, µm/m-K 14
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
17
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
19

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 7.7
2.9
Embodied Energy, MJ/kg 110
49
Embodied Water, L/kg 500
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
86
Resilience: Unit (Modulus of Resilience), kJ/m3 770
290
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 33
22
Strength to Weight: Bending, points 26
21
Thermal Diffusivity, mm2/s 3.9
28
Thermal Shock Resistance, points 24
21

Alloy Composition

Aluminum (Al), % 0
1.0 to 3.0
Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 28 to 32
0
Cobalt (Co), % 49.6 to 66.9
0
Copper (Cu), % 0
55 to 60
Iron (Fe), % 0 to 3.0
1.0 to 3.0
Lead (Pb), % 0
0.5 to 1.5
Manganese (Mn), % 0.5 to 2.0
1.0 to 3.5
Molybdenum (Mo), % 0 to 1.5
0
Nickel (Ni), % 0 to 3.0
0 to 1.0
Silicon (Si), % 0.2 to 2.0
0
Tin (Sn), % 0
0 to 1.5
Tungsten (W), % 3.5 to 5.5
0
Zinc (Zn), % 0
30 to 38
Residuals, % 0
0 to 1.0