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R30006 Cobalt vs. C35300 Brass

R30006 cobalt belongs to the cobalt alloys classification, while C35300 brass belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is C35300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 85
39
Tensile Strength: Ultimate (UTS), MPa 900
340 to 650

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Melting Completion (Liquidus), °C 1400
910
Melting Onset (Solidus), °C 1290
890
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 11
21

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
2.6
Embodied Energy, MJ/kg 110
45
Embodied Water, L/kg 500
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.1
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
38
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
60 to 63
Iron (Fe), % 0 to 3.0
0 to 0.1
Lead (Pb), % 0
1.5 to 2.5
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
33.9 to 38.5
Residuals, % 0
0 to 0.5