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R30605 Cobalt vs. C84100 Brass

R30605 cobalt belongs to the cobalt alloys classification, while C84100 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 C84100 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 34
13
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 81
39
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
230
Tensile Strength: Yield (Proof), MPa 470 to 1600
81

Thermal Properties

Latent Heat of Fusion, J/g 290
190
Melting Completion (Liquidus), °C 1410
1000
Melting Onset (Solidus), °C 1330
810
Specific Heat Capacity, J/kg-K 410
380
Thermal Conductivity, W/m-K 9.6
110
Thermal Expansion, µm/m-K 12
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
23
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
25

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.5
Embodied Carbon, kg CO2/kg material 9.8
2.9
Embodied Energy, MJ/kg 140
48
Embodied Water, L/kg 450
340

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
7.4
Strength to Weight: Bending, points 25 to 36
9.7
Thermal Diffusivity, mm2/s 2.5
33
Thermal Shock Resistance, points 31 to 52
7.8

Alloy Composition


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Aluminum (Al), % 0
0 to 0.010
Antimony (Sb), % 0
0 to 0.050
Bismuth (Bi), % 0
0 to 0.090
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
78 to 85
Iron (Fe), % 0 to 3.0
0 to 0.3
Lead (Pb), % 0
0.050 to 0.25
Manganese (Mn), % 1.0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.050
Silicon (Si), % 0 to 0.4
0 to 0.010
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 4.5
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
12 to 20
Residuals, % 0
0 to 0.5