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G-CoCr28 Cobalt vs. C18400 Copper

G-CoCr28 cobalt belongs to the cobalt alloys classification, while C18400 copper belongs to the copper 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 G-CoCr28 cobalt and the bottom bar is C18400 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Elongation at Break, % 6.7
13 to 50
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 83
44
Tensile Strength: Ultimate (UTS), MPa 560
270 to 490
Tensile Strength: Yield (Proof), MPa 260
110 to 480

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Maximum Temperature: Mechanical, °C 1200
200
Melting Completion (Liquidus), °C 1330
1080
Melting Onset (Solidus), °C 1270
1070
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 8.5
320
Thermal Expansion, µm/m-K 14
17

Otherwise Unclassified Properties

Base Metal Price, % relative 100
31
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 6.2
2.6
Embodied Energy, MJ/kg 84
41
Embodied Water, L/kg 440
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
63 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 160
54 to 980
Stiffness to Weight: Axial, points 15
7.3
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 19
8.5 to 15
Strength to Weight: Bending, points 19
10 to 16
Thermal Diffusivity, mm2/s 2.2
94
Thermal Shock Resistance, points 14
9.6 to 17

Alloy Composition

Arsenic (As), % 0
0 to 0.0050
Calcium (Ca), % 0
0 to 0.0050
Carbon (C), % 0.050 to 0.25
0
Chromium (Cr), % 27 to 30
0.4 to 1.2
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
97.2 to 99.6
Iron (Fe), % 9.7 to 24.5
0 to 0.15
Lithium (Li), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
0
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.050
Silicon (Si), % 0.5 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.7
Residuals, % 0
0 to 0.5