MakeItFrom.com
Menu (ESC)

R31538 Cobalt vs. C18900 Copper

R31538 cobalt belongs to the cobalt alloys classification, while C18900 copper 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 C18900 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 13 to 23
14 to 48
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
43
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
260 to 500
Tensile Strength: Yield (Proof), MPa 580 to 930
67 to 390

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Melting Completion (Liquidus), °C 1360
1080
Melting Onset (Solidus), °C 1290
1020
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
130
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
30

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.1
2.7
Embodied Energy, MJ/kg 110
42
Embodied Water, L/kg 530
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
65 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
20 to 660
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 34 to 45
8.2 to 16
Strength to Weight: Bending, points 27 to 32
10 to 16
Thermal Diffusivity, mm2/s 3.5
38
Thermal Shock Resistance, points 25 to 33
9.3 to 18

Alloy Composition


Deprecated: Automatic conversion of false to array is deprecated in /home/public/compare.php on line 460
Aluminum (Al), % 0
0 to 0.010
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
97.7 to 99.15
Iron (Fe), % 0 to 0.75
0
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0 to 1.0
0.1 to 0.3
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 1.0
0.15 to 0.4
Tin (Sn), % 0
0.6 to 0.9
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5