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R31538 Cobalt vs. C93200 Bronze

R31538 cobalt belongs to the cobalt alloys classification, while C93200 bronze belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is C93200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Elongation at Break, % 13 to 23
20
Fatigue Strength, MPa 310 to 480
110
Poisson's Ratio 0.29
0.35
Shear Modulus, GPa 86
38
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
240
Tensile Strength: Yield (Proof), MPa 580 to 930
130

Thermal Properties

Latent Heat of Fusion, J/g 320
180
Melting Completion (Liquidus), °C 1360
980
Melting Onset (Solidus), °C 1290
850
Specific Heat Capacity, J/kg-K 450
360
Thermal Conductivity, W/m-K 13
59
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
12
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.8
Embodied Carbon, kg CO2/kg material 8.1
3.2
Embodied Energy, MJ/kg 110
52
Embodied Water, L/kg 530
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
40
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
76
Stiffness to Weight: Axial, points 15
6.5
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 34 to 45
7.5
Strength to Weight: Bending, points 27 to 32
9.7
Thermal Diffusivity, mm2/s 3.5
18
Thermal Shock Resistance, points 25 to 33
9.3

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.35
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
81 to 85
Iron (Fe), % 0 to 0.75
0 to 0.2
Lead (Pb), % 0
6.0 to 8.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0 to 1.0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
6.3 to 7.5
Zinc (Zn), % 0
2.0 to 4.0
Residuals, % 0
0 to 1.0