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C68400 Brass vs. R30001 Cobalt

C68400 brass belongs to the copper alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 23 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 C68400 brass and the bottom bar is R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 18
1.0
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 41
86
Tensile Strength: Ultimate (UTS), MPa 540
620

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Melting Completion (Liquidus), °C 840
1530
Melting Onset (Solidus), °C 820
1260
Specific Heat Capacity, J/kg-K 400
430
Thermal Conductivity, W/m-K 66
15
Thermal Expansion, µm/m-K 20
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 99
1.8

Otherwise Unclassified Properties

Density, g/cm3 7.9
9.0
Embodied Carbon, kg CO2/kg material 2.7
8.9
Embodied Energy, MJ/kg 47
130
Embodied Water, L/kg 320
460

Common Calculations

Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 20
22
Strength to Weight: Axial, points 19
19
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 21
3.7
Thermal Shock Resistance, points 18
19

Alloy Composition


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Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0
Carbon (C), % 0
2.0 to 3.0
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
43 to 59
Copper (Cu), % 59 to 64
0
Iron (Fe), % 0 to 1.0
0 to 3.0
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0.2 to 1.5
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.5
0 to 3.0
Phosphorus (P), % 0.030 to 0.3
0
Silicon (Si), % 1.5 to 2.5
0 to 2.0
Tin (Sn), % 0 to 0.5
0
Tungsten (W), % 0
11 to 13
Zinc (Zn), % 28.6 to 39.3
0
Residuals, % 0 to 0.5
0