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R31538 Cobalt vs. C42600 Brass

R31538 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 (6, in this case) are not shown.

For each property being compared, the top bar is R31538 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, % 13 to 23
1.1 to 40
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
42
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
410 to 830
Tensile Strength: Yield (Proof), MPa 580 to 930
220 to 810

Thermal Properties

Latent Heat of Fusion, J/g 320
200
Melting Completion (Liquidus), °C 1360
1030
Melting Onset (Solidus), °C 1290
1010
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
26

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.7
Embodied Carbon, kg CO2/kg material 8.1
2.9
Embodied Energy, MJ/kg 110
48
Embodied Water, L/kg 530
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
9.4 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
230 to 2970
Stiffness to Weight: Axial, points 15
7.1
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 34 to 45
13 to 27
Strength to Weight: Bending, points 27 to 32
14 to 23
Thermal Diffusivity, mm2/s 3.5
33
Thermal Shock Resistance, points 25 to 33
15 to 29

Alloy Composition


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Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
87 to 90
Iron (Fe), % 0 to 0.75
0.050 to 0.2
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0.050 to 0.2
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0.020 to 0.050
Silicon (Si), % 0 to 1.0
0
Tin (Sn), % 0
2.5 to 4.0
Zinc (Zn), % 0
5.3 to 10.4
Residuals, % 0
0 to 0.2