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R30012 Cobalt vs. CR004A Copper

R30012 cobalt belongs to the cobalt alloys classification, while CR004A 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 R30012 cobalt and the bottom bar is CR004A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 1.0
15
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 86
43
Tensile Strength: Ultimate (UTS), MPa 830
220
Tensile Strength: Yield (Proof), MPa 650
130

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Melting Completion (Liquidus), °C 1470
1090
Melting Onset (Solidus), °C 1280
1040
Specific Heat Capacity, J/kg-K 440
390
Thermal Conductivity, W/m-K 15
380
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
100
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
100

Otherwise Unclassified Properties

Density, g/cm3 8.8
9.0
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 120
41
Embodied Water, L/kg 480
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
29
Resilience: Unit (Modulus of Resilience), kJ/m3 960
76
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 26
6.8
Strength to Weight: Bending, points 22
9.0
Thermal Diffusivity, mm2/s 3.8
110
Thermal Shock Resistance, points 23
7.8

Alloy Composition

Bismuth (Bi), % 0
0 to 0.00050
Carbon (C), % 1.4 to 2.0
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
99.9 to 100
Iron (Fe), % 0 to 3.0
0
Lead (Pb), % 0
0 to 0.0050
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Oxygen (O), % 0
0 to 0.040
Silicon (Si), % 0 to 2.0
0
Silver (Ag), % 0
0 to 0.015
Tungsten (W), % 7.5 to 9.5
0