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C35000 Brass vs. R31233 Cobalt

C35000 brass belongs to the copper alloys classification, while R31233 cobalt belongs to the cobalt alloys. There are 22 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 C35000 brass and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
220
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
85
Tensile Strength: Ultimate (UTS), MPa 340 to 650
1020

Thermal Properties

Latent Heat of Fusion, J/g 170
320
Melting Completion (Liquidus), °C 920
1350
Melting Onset (Solidus), °C 890
1330
Specific Heat Capacity, J/kg-K 380
440
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 29
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.1
8.6
Embodied Carbon, kg CO2/kg material 2.7
8.4
Embodied Energy, MJ/kg 45
110
Embodied Water, L/kg 320
480

Common Calculations

Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 12 to 22
33
Strength to Weight: Bending, points 13 to 21
26
Thermal Diffusivity, mm2/s 37
3.2
Thermal Shock Resistance, points 11 to 22
25

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0.020 to 0.1
Chromium (Cr), % 0
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Copper (Cu), % 60 to 63
0
Iron (Fe), % 0 to 0.1
1.0 to 5.0
Lead (Pb), % 0.8 to 2.0
0
Manganese (Mn), % 0
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 0
7.0 to 11
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.050 to 1.0
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 0
1.0 to 3.0
Zinc (Zn), % 34.5 to 39.2
0
Residuals, % 0 to 0.4
0