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C35300 Brass vs. R30605 Cobalt

C35300 brass belongs to the copper alloys classification, while R30605 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 C35300 brass and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
210
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 39
81
Tensile Strength: Ultimate (UTS), MPa 340 to 650
1130 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 170
290
Melting Completion (Liquidus), °C 910
1410
Melting Onset (Solidus), °C 890
1330
Specific Heat Capacity, J/kg-K 380
410
Thermal Conductivity, W/m-K 120
9.6
Thermal Expansion, µm/m-K 21
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 29
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.1
9.6
Embodied Carbon, kg CO2/kg material 2.6
9.8
Embodied Energy, MJ/kg 45
140
Embodied Water, L/kg 320
450

Common Calculations

Stiffness to Weight: Axial, points 7.1
12
Stiffness to Weight: Bending, points 19
21
Strength to Weight: Axial, points 12 to 22
33 to 55
Strength to Weight: Bending, points 13 to 21
25 to 36
Thermal Diffusivity, mm2/s 38
2.5
Thermal Shock Resistance, points 11 to 22
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), % 60 to 63
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Lead (Pb), % 1.5 to 2.5
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
Tungsten (W), % 0
14 to 16
Zinc (Zn), % 33.9 to 38.5
0
Residuals, % 0 to 0.5
0