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R30006 Cobalt vs. C44400 Brass

R30006 cobalt belongs to the cobalt alloys classification, while C44400 brass belongs to the copper alloys. There are 24 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 C44400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 85
41
Tensile Strength: Ultimate (UTS), MPa 900
350
Tensile Strength: Yield (Proof), MPa 540
120

Thermal Properties

Latent Heat of Fusion, J/g 320
180
Melting Completion (Liquidus), °C 1400
940
Melting Onset (Solidus), °C 1290
900
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 11
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
25
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
27

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.3
Embodied Carbon, kg CO2/kg material 7.8
2.8
Embodied Energy, MJ/kg 110
46
Embodied Water, L/kg 500
330

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 670
65
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 29
12
Strength to Weight: Bending, points 24
13
Thermal Diffusivity, mm2/s 3.9
35
Thermal Shock Resistance, points 26
12

Alloy Composition


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Antimony (Sb), % 0
0.020 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
70 to 73
Iron (Fe), % 0 to 3.0
0 to 0.060
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
Tin (Sn), % 0
0.9 to 1.2
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
25.2 to 29.1
Residuals, % 0
0 to 0.4