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R31538 Cobalt vs. CC331G Bronze

R31538 cobalt belongs to the cobalt alloys classification, while CC331G bronze belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is CC331G bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 13 to 23
20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
43
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
620
Tensile Strength: Yield (Proof), MPa 580 to 930
240

Thermal Properties

Latent Heat of Fusion, J/g 320
230
Melting Completion (Liquidus), °C 1360
1060
Melting Onset (Solidus), °C 1290
1000
Specific Heat Capacity, J/kg-K 450
440
Thermal Conductivity, W/m-K 13
61
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
13
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
14

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.3
Embodied Carbon, kg CO2/kg material 8.1
3.2
Embodied Energy, MJ/kg 110
53
Embodied Water, L/kg 530
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
97
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
250
Stiffness to Weight: Axial, points 15
7.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 34 to 45
21
Strength to Weight: Bending, points 27 to 32
19
Thermal Diffusivity, mm2/s 3.5
17
Thermal Shock Resistance, points 25 to 33
22

Alloy Composition

Aluminum (Al), % 0
8.5 to 10.5
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
83 to 86.5
Iron (Fe), % 0 to 0.75
1.5 to 3.5
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0 to 1.5
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Tin (Sn), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.5