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R31537 Cobalt vs. C17000 Copper

R31537 cobalt belongs to the cobalt alloys classification, while C17000 copper belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R31537 cobalt and the bottom bar is C17000 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 14 to 23
1.1 to 31
Poisson's Ratio 0.29
0.33
Rockwell C Hardness 25 to 35
21 to 42
Shear Modulus, GPa 87
45
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
490 to 1310
Tensile Strength: Yield (Proof), MPa 590 to 940
160 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 320
230
Melting Completion (Liquidus), °C 1360
980
Melting Onset (Solidus), °C 1290
870
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
22
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
22

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.8
Embodied Carbon, kg CO2/kg material 8.1
8.7
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 530
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
4.2 to 390
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
110 to 5420
Stiffness to Weight: Axial, points 15
7.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 33 to 44
15 to 41
Strength to Weight: Bending, points 26 to 32
16 to 30
Thermal Diffusivity, mm2/s 3.4
32
Thermal Shock Resistance, points 24 to 32
17 to 45

Alloy Composition

Aluminum (Al), % 0
0 to 0.2
Beryllium (Be), % 0
1.6 to 1.8
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.9 to 69
0
Copper (Cu), % 0
96.3 to 98.2
Iron (Fe), % 0 to 0.75
0 to 0.4
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0.2 to 0.6
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Residuals, % 0
0 to 0.5