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R30006 Cobalt vs. C33500 Brass

R30006 cobalt belongs to the cobalt alloys classification, while C33500 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is C33500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Elongation at Break, % 1.0
3.0 to 28
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 85
40
Tensile Strength: Ultimate (UTS), MPa 900
340 to 650
Tensile Strength: Yield (Proof), MPa 540
120 to 420

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Melting Completion (Liquidus), °C 1400
930
Melting Onset (Solidus), °C 1290
900
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
26
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
29

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
8.0 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 670
69 to 860
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 29
12 to 22
Strength to Weight: Bending, points 24
13 to 21
Thermal Diffusivity, mm2/s 3.9
37
Thermal Shock Resistance, points 26
11 to 22

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 0.1
Lead (Pb), % 0
0.25 to 0.7
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
33.8 to 37.8
Residuals, % 0
0 to 0.4