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R30605 Cobalt vs. C44500 Brass

R30605 cobalt belongs to the cobalt alloys classification, while C44500 brass belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is C44500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 81
41
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
350
Tensile Strength: Yield (Proof), MPa 470 to 1600
120

Thermal Properties

Latent Heat of Fusion, J/g 290
180
Melting Completion (Liquidus), °C 1410
940
Melting Onset (Solidus), °C 1330
900
Specific Heat Capacity, J/kg-K 410
380
Thermal Conductivity, W/m-K 9.6
110
Thermal Expansion, µm/m-K 12
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
25
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
27

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
46
Embodied Water, L/kg 450
330

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
12
Strength to Weight: Bending, points 25 to 36
13
Thermal Diffusivity, mm2/s 2.5
35
Thermal Shock Resistance, points 31 to 52
12

Alloy Composition

Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
70 to 73
Iron (Fe), % 0 to 3.0
0 to 0.060
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 1.0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.040
0.020 to 0.1
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0.9 to 1.2
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
25.2 to 29.1
Residuals, % 0
0 to 0.4