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R30605 Cobalt vs. C47940 Brass

R30605 cobalt belongs to the cobalt alloys classification, while C47940 brass belongs to the copper alloys. There are 22 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 R30605 cobalt and the bottom bar is C47940 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
100
Elongation at Break, % 34
14 to 34
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 81
40
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
380 to 520
Tensile Strength: Yield (Proof), MPa 470 to 1600
160 to 390

Thermal Properties

Latent Heat of Fusion, J/g 290
170
Melting Completion (Liquidus), °C 1410
850
Melting Onset (Solidus), °C 1330
800
Specific Heat Capacity, J/kg-K 410
380
Thermal Conductivity, W/m-K 9.6
110
Thermal Expansion, µm/m-K 12
20

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.2
Embodied Carbon, kg CO2/kg material 9.8
2.8
Embodied Energy, MJ/kg 140
47
Embodied Water, L/kg 450
330

Common Calculations

Stiffness to Weight: Axial, points 12
7.1
Stiffness to Weight: Bending, points 21
19
Strength to Weight: Axial, points 33 to 55
13 to 17
Strength to Weight: Bending, points 25 to 36
14 to 17
Thermal Diffusivity, mm2/s 2.5
36
Thermal Shock Resistance, points 31 to 52
13 to 17

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
Copper (Cu), % 0
63 to 66
Iron (Fe), % 0 to 3.0
0.1 to 1.0
Lead (Pb), % 0
1.0 to 2.0
Manganese (Mn), % 1.0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0.1 to 0.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.2 to 2.0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
28.1 to 34.6
Residuals, % 0
0 to 0.4