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C43000 Brass vs. R30605 Cobalt

C43000 brass belongs to the copper alloys classification, while R30605 cobalt belongs to the cobalt 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 C43000 brass and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 3.0 to 55
34
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 42
81
Tensile Strength: Ultimate (UTS), MPa 320 to 710
1130 to 1900
Tensile Strength: Yield (Proof), MPa 130 to 550
470 to 1600

Thermal Properties

Latent Heat of Fusion, J/g 190
290
Melting Completion (Liquidus), °C 1030
1410
Melting Onset (Solidus), °C 1000
1330
Specific Heat Capacity, J/kg-K 380
410
Thermal Conductivity, W/m-K 120
9.6
Thermal Expansion, µm/m-K 18
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 28
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.6
9.6
Embodied Carbon, kg CO2/kg material 2.8
9.8
Embodied Energy, MJ/kg 46
140
Embodied Water, L/kg 330
450

Common Calculations

Stiffness to Weight: Axial, points 7.1
12
Stiffness to Weight: Bending, points 19
21
Strength to Weight: Axial, points 10 to 23
33 to 55
Strength to Weight: Bending, points 12 to 20
25 to 36
Thermal Diffusivity, mm2/s 36
2.5
Thermal Shock Resistance, points 11 to 25
31 to 52

Alloy Composition

Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 57
Copper (Cu), % 84 to 87
0
Iron (Fe), % 0 to 0.050
0 to 3.0
Lead (Pb), % 0 to 0.1
0
Manganese (Mn), % 0
1.0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.7 to 2.7
0
Tungsten (W), % 0
14 to 16
Zinc (Zn), % 9.7 to 14.3
0
Residuals, % 0 to 0.5
0