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R30006 Cobalt vs. C42600 Brass

R30006 cobalt belongs to the cobalt alloys classification, while C42600 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is C42600 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 1.0
1.1 to 40
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
42
Tensile Strength: Ultimate (UTS), MPa 900
410 to 830
Tensile Strength: Yield (Proof), MPa 540
220 to 810

Thermal Properties

Latent Heat of Fusion, J/g 320
200
Melting Completion (Liquidus), °C 1400
1030
Melting Onset (Solidus), °C 1290
1010
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
25
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
26

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.7
Embodied Carbon, kg CO2/kg material 7.8
2.9
Embodied Energy, MJ/kg 110
48
Embodied Water, L/kg 500
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
9.4 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 670
230 to 2970
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 29
13 to 27
Strength to Weight: Bending, points 24
14 to 23
Thermal Diffusivity, mm2/s 3.9
33
Thermal Shock Resistance, points 26
15 to 29

Alloy Composition


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Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
87 to 90
Iron (Fe), % 0 to 3.0
0.050 to 0.2
Lead (Pb), % 0
0 to 0.050
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0.050 to 0.2
Phosphorus (P), % 0
0.020 to 0.050
Silicon (Si), % 0 to 2.0
0
Tin (Sn), % 0
2.5 to 4.0
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
5.3 to 10.4
Residuals, % 0
0 to 0.2