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R30006 Cobalt vs. C99750 Brass

R30006 cobalt belongs to the cobalt alloys classification, while C99750 brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is C99750 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
130
Elongation at Break, % 1.0
20 to 30
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 85
48
Tensile Strength: Ultimate (UTS), MPa 900
450 to 520
Tensile Strength: Yield (Proof), MPa 540
220 to 280

Thermal Properties

Latent Heat of Fusion, J/g 320
200
Melting Completion (Liquidus), °C 1400
840
Melting Onset (Solidus), °C 1290
820
Specific Heat Capacity, J/kg-K 450
410
Thermal Expansion, µm/m-K 11
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
2.2

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.1
Embodied Carbon, kg CO2/kg material 7.8
3.1
Embodied Energy, MJ/kg 110
51
Embodied Water, L/kg 500
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 670
190 to 300
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 29
15 to 18
Strength to Weight: Bending, points 24
16 to 18
Thermal Shock Resistance, points 26
13 to 15

Alloy Composition


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Aluminum (Al), % 0
0.25 to 3.0
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
55 to 61
Iron (Fe), % 0 to 3.0
0 to 1.0
Lead (Pb), % 0
0.5 to 2.5
Manganese (Mn), % 0
17 to 23
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0 to 5.0
Silicon (Si), % 0 to 2.0
0
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
17 to 23
Residuals, % 0
0 to 0.3