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R30006 Cobalt vs. C85800 Brass

R30006 cobalt belongs to the cobalt alloys classification, while C85800 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 C85800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Elongation at Break, % 1.0
15
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 85
40
Tensile Strength: Ultimate (UTS), MPa 900
380
Tensile Strength: Yield (Proof), MPa 540
210

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Melting Completion (Liquidus), °C 1400
900
Melting Onset (Solidus), °C 1290
870
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 15
84
Thermal Expansion, µm/m-K 11
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
20
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
22

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.0
Embodied Carbon, kg CO2/kg material 7.8
2.8
Embodied Energy, MJ/kg 110
47
Embodied Water, L/kg 500
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
48
Resilience: Unit (Modulus of Resilience), kJ/m3 670
210
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 29
13
Strength to Weight: Bending, points 24
15
Thermal Diffusivity, mm2/s 3.9
27
Thermal Shock Resistance, points 26
13

Alloy Composition


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Aluminum (Al), % 0
0 to 0.55
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
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
57 to 69
Iron (Fe), % 0 to 3.0
0 to 0.5
Lead (Pb), % 0
0 to 1.5
Manganese (Mn), % 0
0 to 0.25
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0 to 0.5
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 2.0
0 to 0.25
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
0 to 1.5
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
31 to 41
Residuals, % 0
0 to 1.3