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C23400 Brass vs. G-CoCr28 Cobalt

C23400 brass belongs to the copper alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C23400 brass and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 42
83
Tensile Strength: Ultimate (UTS), MPa 370 to 640
560

Thermal Properties

Latent Heat of Fusion, J/g 190
320
Maximum Temperature: Mechanical, °C 160
1200
Melting Completion (Liquidus), °C 970
1330
Melting Onset (Solidus), °C 930
1270
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 120
8.5
Thermal Expansion, µm/m-K 19
14

Otherwise Unclassified Properties

Base Metal Price, % relative 27
100
Density, g/cm3 8.5
8.1
Embodied Carbon, kg CO2/kg material 2.6
6.2
Embodied Energy, MJ/kg 43
84
Embodied Water, L/kg 320
440

Common Calculations

Stiffness to Weight: Axial, points 7.2
15
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 12 to 21
19
Strength to Weight: Bending, points 13 to 19
19
Thermal Diffusivity, mm2/s 36
2.2
Thermal Shock Resistance, points 12 to 22
14

Alloy Composition

Carbon (C), % 0
0.050 to 0.25
Chromium (Cr), % 0
27 to 30
Cobalt (Co), % 0
48 to 52
Copper (Cu), % 81 to 84
0
Iron (Fe), % 0 to 0.050
9.7 to 24.5
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0.5 to 1.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 15.7 to 19
0
Residuals, % 0 to 0.2
0