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R30001 Cobalt vs. C66200 Brass

R30001 cobalt belongs to the cobalt alloys classification, while C66200 brass belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is C66200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 1.0
8.0 to 15
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 86
42
Tensile Strength: Ultimate (UTS), MPa 620
450 to 520

Thermal Properties

Latent Heat of Fusion, J/g 310
200
Melting Completion (Liquidus), °C 1530
1070
Melting Onset (Solidus), °C 1260
1030
Specific Heat Capacity, J/kg-K 430
390
Thermal Conductivity, W/m-K 15
150
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
35
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
36

Otherwise Unclassified Properties

Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 8.9
2.7
Embodied Energy, MJ/kg 130
43
Embodied Water, L/kg 460
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 22
19
Strength to Weight: Axial, points 19
14 to 17
Strength to Weight: Bending, points 18
15 to 16
Thermal Diffusivity, mm2/s 3.7
45
Thermal Shock Resistance, points 19
16 to 18

Alloy Composition

Carbon (C), % 2.0 to 3.0
0
Chromium (Cr), % 28 to 32
0
Cobalt (Co), % 43 to 59
0
Copper (Cu), % 0
86.6 to 91
Iron (Fe), % 0 to 3.0
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0.3 to 1.0
Phosphorus (P), % 0
0.050 to 0.2
Silicon (Si), % 0 to 2.0
0
Tin (Sn), % 0
0.2 to 0.7
Tungsten (W), % 11 to 13
0
Zinc (Zn), % 0
6.5 to 12.9
Residuals, % 0
0 to 0.5