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EN 2.4964 Cobalt vs. C69430 Brass

EN 2.4964 cobalt belongs to the cobalt alloys classification, while C69430 brass 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 C69430 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 40
17
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
42
Tensile Strength: Ultimate (UTS), MPa 960
570
Tensile Strength: Yield (Proof), MPa 390
280

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Melting Completion (Liquidus), °C 1630
920
Melting Onset (Solidus), °C 1550
820
Specific Heat Capacity, J/kg-K 400
410
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 12
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
6.7

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.3
Embodied Carbon, kg CO2/kg material 9.8
2.7
Embodied Energy, MJ/kg 140
44
Embodied Water, L/kg 450
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
80
Resilience: Unit (Modulus of Resilience), kJ/m3 340
340
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 21
19
Strength to Weight: Axial, points 28
19
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 3.9
7.7
Thermal Shock Resistance, points 25
20

Alloy Composition


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Arsenic (As), % 0
0.030 to 0.060
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
80 to 83
Iron (Fe), % 0 to 3.0
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
3.5 to 4.5
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
11.4 to 16.5
Residuals, % 0
0 to 0.5