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C67000 Bronze vs. R30016 Cobalt

C67000 bronze belongs to the copper alloys classification, while R30016 cobalt belongs to the cobalt 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 C67000 bronze and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 5.6 to 11
8.4
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 42
85
Tensile Strength: Ultimate (UTS), MPa 660 to 880
1010
Tensile Strength: Yield (Proof), MPa 350 to 540
580

Thermal Properties

Latent Heat of Fusion, J/g 190
320
Melting Completion (Liquidus), °C 900
1360
Melting Onset (Solidus), °C 850
1270
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 99
15
Thermal Expansion, µm/m-K 20
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 25
2.0

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.5
Embodied Carbon, kg CO2/kg material 2.9
7.7
Embodied Energy, MJ/kg 49
110
Embodied Water, L/kg 350
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 43 to 62
72
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1290
770
Stiffness to Weight: Axial, points 7.8
14
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 23 to 31
33
Strength to Weight: Bending, points 21 to 26
26
Thermal Diffusivity, mm2/s 30
3.9
Thermal Shock Resistance, points 21 to 29
24

Alloy Composition

Aluminum (Al), % 3.0 to 6.0
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 63 to 68
0
Iron (Fe), % 2.0 to 4.0
0 to 3.0
Lead (Pb), % 0 to 0.2
0
Manganese (Mn), % 2.5 to 5.0
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 0
0.2 to 2.0
Tin (Sn), % 0 to 0.5
0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 21.8 to 32.5
0
Residuals, % 0 to 0.5
0