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R30605 Cobalt vs. CC765S Brass

R30605 cobalt belongs to the cobalt alloys classification, while CC765S brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is CC765S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 34
21
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 81
42
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
540
Tensile Strength: Yield (Proof), MPa 470 to 1600
220

Thermal Properties

Latent Heat of Fusion, J/g 290
180
Melting Completion (Liquidus), °C 1410
860
Melting Onset (Solidus), °C 1330
820
Specific Heat Capacity, J/kg-K 410
400
Thermal Conductivity, W/m-K 9.6
91
Thermal Expansion, µm/m-K 12
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
30
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
34

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.0
Embodied Carbon, kg CO2/kg material 9.8
3.0
Embodied Energy, MJ/kg 140
51
Embodied Water, L/kg 450
330

Common Calculations

Stiffness to Weight: Axial, points 12
7.6
Stiffness to Weight: Bending, points 21
20
Strength to Weight: Axial, points 33 to 55
19
Strength to Weight: Bending, points 25 to 36
18
Thermal Diffusivity, mm2/s 2.5
28
Thermal Shock Resistance, points 31 to 52
17

Alloy Composition

Aluminum (Al), % 0
0.5 to 2.5
Antimony (Sb), % 0
0 to 0.080
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
51 to 65
Iron (Fe), % 0 to 3.0
0.5 to 2.0
Lead (Pb), % 0
0 to 0.5
Manganese (Mn), % 1.0 to 2.0
0.3 to 3.0
Nickel (Ni), % 9.0 to 11
0 to 6.0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 1.0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
19.8 to 47.7