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CR023A Copper vs. EN 2.4964 Cobalt

CR023A copper belongs to the copper alloys classification, while EN 2.4964 cobalt belongs to the cobalt 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 CR023A copper and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 15
40
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
86
Tensile Strength: Ultimate (UTS), MPa 220
960
Tensile Strength: Yield (Proof), MPa 130
390

Thermal Properties

Latent Heat of Fusion, J/g 210
290
Melting Completion (Liquidus), °C 1090
1630
Melting Onset (Solidus), °C 1040
1550
Specific Heat Capacity, J/kg-K 390
400
Thermal Conductivity, W/m-K 380
15
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 100
1.8

Otherwise Unclassified Properties

Density, g/cm3 9.0
9.6
Embodied Carbon, kg CO2/kg material 2.6
9.8
Embodied Energy, MJ/kg 41
140
Embodied Water, L/kg 320
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
310
Resilience: Unit (Modulus of Resilience), kJ/m3 76
340
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
21
Strength to Weight: Axial, points 6.8
28
Strength to Weight: Bending, points 9.0
23
Thermal Diffusivity, mm2/s 110
3.9
Thermal Shock Resistance, points 7.8
25

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 58
Copper (Cu), % 99.9 to 99.995
0
Iron (Fe), % 0
0 to 3.0
Lead (Pb), % 0 to 0.0050
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0.0050 to 0.013
0 to 0.020
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 0 to 0.015
0
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 0
14 to 16