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R31538 Cobalt vs. C99700 Brass

R31538 cobalt belongs to the cobalt alloys classification, while C99700 brass belongs to the copper alloys. There are 24 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 R31538 cobalt and the bottom bar is C99700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 13 to 23
25
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 86
46
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
380
Tensile Strength: Yield (Proof), MPa 580 to 930
170

Thermal Properties

Latent Heat of Fusion, J/g 320
200
Melting Completion (Liquidus), °C 1360
900
Melting Onset (Solidus), °C 1290
880
Specific Heat Capacity, J/kg-K 450
410
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
3.3

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.1
Embodied Carbon, kg CO2/kg material 8.1
3.3
Embodied Energy, MJ/kg 110
53
Embodied Water, L/kg 530
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
78
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
120
Stiffness to Weight: Axial, points 15
8.3
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 34 to 45
13
Strength to Weight: Bending, points 27 to 32
14
Thermal Shock Resistance, points 25 to 33
11

Alloy Composition


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Aluminum (Al), % 0
0.5 to 3.0
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
54 to 65.5
Iron (Fe), % 0 to 0.75
0 to 1.0
Lead (Pb), % 0
0 to 2.0
Manganese (Mn), % 0 to 1.0
11 to 15
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
4.0 to 6.0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0
Tin (Sn), % 0
0 to 1.0
Zinc (Zn), % 0
19 to 25
Residuals, % 0
0 to 0.3