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R30006 Cobalt vs. C68300 Brass

R30006 cobalt belongs to the cobalt alloys classification, while C68300 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 C68300 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
430
Tensile Strength: Yield (Proof), MPa 540
260

Thermal Properties

Latent Heat of Fusion, J/g 320
180
Melting Completion (Liquidus), °C 1400
900
Melting Onset (Solidus), °C 1290
890
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 11
20

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
46
Embodied Water, L/kg 500
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
56
Resilience: Unit (Modulus of Resilience), kJ/m3 670
330
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 29
15
Strength to Weight: Bending, points 24
16
Thermal Diffusivity, mm2/s 3.9
38
Thermal Shock Resistance, points 26
14

Alloy Composition


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Antimony (Sb), % 0
0.3 to 1.0
Cadmium (Cd), % 0
0 to 0.010
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
59 to 63
Iron (Fe), % 0 to 3.0
0
Lead (Pb), % 0
0 to 0.090
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
0.3 to 1.0
Tin (Sn), % 0
0.050 to 0.2
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
34.2 to 40.4
Residuals, % 0
0 to 0.5