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R30016 Cobalt vs. C61900 Bronze

R30016 cobalt belongs to the cobalt alloys classification, while C61900 bronze belongs to the copper alloys. There are 26 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 R30016 cobalt and the bottom bar is C61900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 8.4
21 to 32
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 85
43
Tensile Strength: Ultimate (UTS), MPa 1010
570 to 650
Tensile Strength: Yield (Proof), MPa 580
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 320
230
Melting Completion (Liquidus), °C 1360
1050
Melting Onset (Solidus), °C 1270
1040
Specific Heat Capacity, J/kg-K 450
440
Thermal Conductivity, W/m-K 15
79
Thermal Expansion, µm/m-K 14
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
11

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.3
Embodied Carbon, kg CO2/kg material 7.7
3.1
Embodied Energy, MJ/kg 110
51
Embodied Water, L/kg 500
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
110 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 770
230 to 430
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 33
19 to 22
Strength to Weight: Bending, points 26
18 to 20
Thermal Diffusivity, mm2/s 3.9
22
Thermal Shock Resistance, points 24
20 to 23

Alloy Composition

Aluminum (Al), % 0
8.5 to 10
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
83.6 to 88.5
Iron (Fe), % 0 to 3.0
3.0 to 4.5
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0.5 to 2.0
0
Molybdenum (Mo), % 0 to 1.5
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0.2 to 2.0
0
Tin (Sn), % 0
0 to 0.6
Tungsten (W), % 3.5 to 5.5
0
Zinc (Zn), % 0
0 to 0.8
Residuals, % 0
0 to 0.5