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G-CoCr28 Cobalt vs. C95700 Bronze

G-CoCr28 cobalt belongs to the cobalt alloys classification, while C95700 bronze belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is C95700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
130
Elongation at Break, % 6.7
23
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 83
47
Tensile Strength: Ultimate (UTS), MPa 560
680
Tensile Strength: Yield (Proof), MPa 260
310

Thermal Properties

Latent Heat of Fusion, J/g 320
230
Maximum Temperature: Mechanical, °C 1200
220
Melting Completion (Liquidus), °C 1330
990
Melting Onset (Solidus), °C 1270
950
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 8.5
12
Thermal Expansion, µm/m-K 14
18

Otherwise Unclassified Properties

Base Metal Price, % relative 100
26
Density, g/cm3 8.1
8.2
Embodied Carbon, kg CO2/kg material 6.2
3.3
Embodied Energy, MJ/kg 84
54
Embodied Water, L/kg 440
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
130
Resilience: Unit (Modulus of Resilience), kJ/m3 160
390
Stiffness to Weight: Axial, points 15
8.5
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 19
23
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 2.2
3.3
Thermal Shock Resistance, points 14
21

Alloy Composition

Aluminum (Al), % 0
7.0 to 8.5
Carbon (C), % 0.050 to 0.25
0
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
71 to 78.5
Iron (Fe), % 9.7 to 24.5
2.0 to 4.0
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 1.5
11 to 14
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
1.5 to 3.0
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.5 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.5