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R31538 Cobalt vs. C26200 Brass

R31538 cobalt belongs to the cobalt alloys classification, while C26200 brass belongs to the copper alloys. There are 26 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 R31538 cobalt and the bottom bar is C26200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 13 to 23
3.0 to 180
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 86
41
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
330 to 770
Tensile Strength: Yield (Proof), MPa 580 to 930
110 to 490

Thermal Properties

Latent Heat of Fusion, J/g 320
180
Melting Completion (Liquidus), °C 1360
950
Melting Onset (Solidus), °C 1290
920
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
120
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
31

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 8.1
2.7
Embodied Energy, MJ/kg 110
45
Embodied Water, L/kg 530
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
19 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
62 to 1110
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 34 to 45
11 to 26
Strength to Weight: Bending, points 27 to 32
13 to 23
Thermal Diffusivity, mm2/s 3.5
38
Thermal Shock Resistance, points 25 to 33
11 to 26

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
67 to 70
Iron (Fe), % 0 to 0.75
0 to 0.050
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0
Zinc (Zn), % 0
29.6 to 33
Residuals, % 0
0 to 0.3