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R30006 Cobalt vs. C27200 Brass

R30006 cobalt belongs to the cobalt alloys classification, while C27200 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 R30006 cobalt and the bottom bar is C27200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 1.0
10 to 50
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 85
40
Tensile Strength: Ultimate (UTS), MPa 900
370 to 590
Tensile Strength: Yield (Proof), MPa 540
150 to 410

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Melting Completion (Liquidus), °C 1400
920
Melting Onset (Solidus), °C 1290
870
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 11
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
28
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
31

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.1
Embodied Carbon, kg CO2/kg material 7.8
2.7
Embodied Energy, MJ/kg 110
45
Embodied Water, L/kg 500
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
30 to 270
Resilience: Unit (Modulus of Resilience), kJ/m3 670
110 to 810
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 29
13 to 20
Strength to Weight: Bending, points 24
14 to 19
Thermal Diffusivity, mm2/s 3.9
37
Thermal Shock Resistance, points 26
12 to 20

Alloy Composition


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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
62 to 65
Iron (Fe), % 0 to 3.0
0 to 0.070
Lead (Pb), % 0
0 to 0.070
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
0
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
34.6 to 38
Residuals, % 0
0 to 0.3