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EN 2.4964 Cobalt vs. C74400 Nickel Silver

EN 2.4964 cobalt belongs to the cobalt alloys classification, while C74400 nickel silver 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 C74400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 40
43
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 86
39
Tensile Strength: Ultimate (UTS), MPa 960
350
Tensile Strength: Yield (Proof), MPa 390
120

Thermal Properties

Latent Heat of Fusion, J/g 290
180
Melting Completion (Liquidus), °C 1630
930
Melting Onset (Solidus), °C 1550
910
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 12
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
26
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
29

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.2
Embodied Carbon, kg CO2/kg material 9.8
2.9
Embodied Energy, MJ/kg 140
48
Embodied Water, L/kg 450
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
120
Resilience: Unit (Modulus of Resilience), kJ/m3 340
63
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 21
19
Strength to Weight: Axial, points 28
12
Strength to Weight: Bending, points 23
14
Thermal Diffusivity, mm2/s 3.9
37
Thermal Shock Resistance, points 25
12

Alloy Composition

Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
62 to 66
Iron (Fe), % 0 to 3.0
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 11
2.0 to 4.0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
29.6 to 36
Residuals, % 0
0 to 0.3