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C23400 Brass vs. R30155 Cobalt

C23400 brass belongs to the copper alloys classification, while R30155 cobalt belongs to the iron 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 C23400 brass and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 42
81
Tensile Strength: Ultimate (UTS), MPa 370 to 640
850

Thermal Properties

Latent Heat of Fusion, J/g 190
300
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 970
1470
Melting Onset (Solidus), °C 930
1420
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 19
14

Otherwise Unclassified Properties

Base Metal Price, % relative 27
80
Density, g/cm3 8.5
8.5
Embodied Carbon, kg CO2/kg material 2.6
9.7
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 320
300

Common Calculations

Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 12 to 21
28
Strength to Weight: Bending, points 13 to 19
24
Thermal Diffusivity, mm2/s 36
3.2
Thermal Shock Resistance, points 12 to 22
21

Alloy Composition

Carbon (C), % 0
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 81 to 84
0
Iron (Fe), % 0 to 0.050
24.3 to 36.2
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 15.7 to 19
0
Residuals, % 0 to 0.2
0