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C89320 Bronze vs. R30012 Cobalt

C89320 bronze belongs to the copper alloys classification, while R30012 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C89320 bronze and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 17
1.0
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 40
86
Tensile Strength: Ultimate (UTS), MPa 270
830
Tensile Strength: Yield (Proof), MPa 140
650

Thermal Properties

Latent Heat of Fusion, J/g 190
320
Melting Completion (Liquidus), °C 1050
1470
Melting Onset (Solidus), °C 930
1280
Specific Heat Capacity, J/kg-K 360
440
Thermal Conductivity, W/m-K 56
15
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 15
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.8
Embodied Carbon, kg CO2/kg material 3.5
8.3
Embodied Energy, MJ/kg 56
120
Embodied Water, L/kg 490
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 93
960
Stiffness to Weight: Axial, points 6.8
14
Stiffness to Weight: Bending, points 18
23
Strength to Weight: Axial, points 8.5
26
Strength to Weight: Bending, points 10
22
Thermal Diffusivity, mm2/s 17
3.8
Thermal Shock Resistance, points 10
23

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.35
0
Bismuth (Bi), % 4.0 to 6.0
0
Carbon (C), % 0
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 87 to 91
0
Iron (Fe), % 0 to 0.2
0 to 3.0
Lead (Pb), % 0 to 0.090
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 1.0
0 to 3.0
Phosphorus (P), % 0 to 0.3
0
Silicon (Si), % 0 to 0.0050
0 to 2.0
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 5.0 to 7.0
0
Tungsten (W), % 0
7.5 to 9.5
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0