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R30006 Cobalt vs. C84000 Brass

R30006 cobalt belongs to the cobalt alloys classification, while C84000 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 C84000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 1.0
27
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
42
Tensile Strength: Ultimate (UTS), MPa 900
250
Tensile Strength: Yield (Proof), MPa 540
140

Thermal Properties

Latent Heat of Fusion, J/g 320
190
Melting Completion (Liquidus), °C 1400
1040
Melting Onset (Solidus), °C 1290
940
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 15
72
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
16
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
17

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.6
Embodied Carbon, kg CO2/kg material 7.8
3.0
Embodied Energy, MJ/kg 110
49
Embodied Water, L/kg 500
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
58
Resilience: Unit (Modulus of Resilience), kJ/m3 670
83
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 29
8.2
Strength to Weight: Bending, points 24
10
Thermal Diffusivity, mm2/s 3.9
22
Thermal Shock Resistance, points 26
9.0

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.020
Boron (B), % 0
0 to 0.1
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
82 to 89
Iron (Fe), % 0 to 3.0
0 to 0.4
Lead (Pb), % 0
0 to 0.090
Manganese (Mn), % 0
0 to 0.010
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0.5 to 2.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 2.0
0 to 0.0050
Sulfur (S), % 0
0.1 to 0.65
Tin (Sn), % 0
2.0 to 4.0
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
5.0 to 14
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0
0 to 0.7