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EN 2.4964 Cobalt vs. C64800 Bronze

EN 2.4964 cobalt belongs to the cobalt alloys classification, while C64800 bronze belongs to the copper alloys. There are 26 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 EN 2.4964 cobalt and the bottom bar is C64800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 40
8.0
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
44
Tensile Strength: Ultimate (UTS), MPa 960
640
Tensile Strength: Yield (Proof), MPa 390
630

Thermal Properties

Latent Heat of Fusion, J/g 290
220
Melting Completion (Liquidus), °C 1630
1090
Melting Onset (Solidus), °C 1550
1030
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 15
260
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
65
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
66

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.9
Embodied Carbon, kg CO2/kg material 9.8
2.7
Embodied Energy, MJ/kg 140
43
Embodied Water, L/kg 450
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
51
Resilience: Unit (Modulus of Resilience), kJ/m3 340
1680
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 21
18
Strength to Weight: Axial, points 28
20
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 3.9
75
Thermal Shock Resistance, points 25
23

Alloy Composition

Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0 to 0.090
Cobalt (Co), % 46.4 to 58
1.0 to 3.0
Copper (Cu), % 0
92.4 to 98.8
Iron (Fe), % 0 to 3.0
0 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0 to 0.5
Phosphorus (P), % 0 to 0.020
0 to 0.5
Silicon (Si), % 0 to 0.4
0.2 to 1.0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.5
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.5