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R30605 Cobalt vs. C66300 Brass

R30605 cobalt belongs to the cobalt alloys classification, while C66300 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 C66300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 34
2.3 to 22
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 81
42
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
460 to 810
Tensile Strength: Yield (Proof), MPa 470 to 1600
400 to 800

Thermal Properties

Latent Heat of Fusion, J/g 290
200
Melting Completion (Liquidus), °C 1410
1050
Melting Onset (Solidus), °C 1330
1000
Specific Heat Capacity, J/kg-K 410
380
Thermal Conductivity, W/m-K 9.6
110
Thermal Expansion, µm/m-K 12
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
25
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
26

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.6
Embodied Carbon, kg CO2/kg material 9.8
2.8
Embodied Energy, MJ/kg 140
46
Embodied Water, L/kg 450
320

Common Calculations

Stiffness to Weight: Axial, points 12
7.2
Stiffness to Weight: Bending, points 21
19
Strength to Weight: Axial, points 33 to 55
15 to 26
Strength to Weight: Bending, points 25 to 36
15 to 22
Thermal Diffusivity, mm2/s 2.5
32
Thermal Shock Resistance, points 31 to 52
16 to 28

Alloy Composition


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Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 57
0 to 0.2
Copper (Cu), % 0
84.5 to 87.5
Iron (Fe), % 0 to 3.0
1.4 to 2.4
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 1.0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.040
0 to 0.35
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 3.0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
6.0 to 12.8
Residuals, % 0
0 to 0.5