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C32000 Brass vs. R30012 Cobalt

C32000 brass belongs to the copper alloys classification, while R30012 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C32000 brass and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 6.8 to 29
1.0
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 41
86
Tensile Strength: Ultimate (UTS), MPa 270 to 470
830
Tensile Strength: Yield (Proof), MPa 78 to 390
650

Thermal Properties

Latent Heat of Fusion, J/g 190
320
Melting Completion (Liquidus), °C 1020
1470
Melting Onset (Solidus), °C 990
1280
Specific Heat Capacity, J/kg-K 380
440
Thermal Conductivity, W/m-K 160
15
Thermal Expansion, µm/m-K 19
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 37
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.7
8.8
Embodied Carbon, kg CO2/kg material 2.6
8.3
Embodied Energy, MJ/kg 42
120
Embodied Water, L/kg 310
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 59
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 28 to 680
960
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
23
Strength to Weight: Axial, points 8.8 to 15
26
Strength to Weight: Bending, points 11 to 16
22
Thermal Diffusivity, mm2/s 47
3.8
Thermal Shock Resistance, points 9.5 to 16
23

Alloy Composition

Carbon (C), % 0
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 83.5 to 86.5
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Lead (Pb), % 1.5 to 2.2
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.25
0 to 3.0
Silicon (Si), % 0
0 to 2.0
Tungsten (W), % 0
7.5 to 9.5
Zinc (Zn), % 10.6 to 15
0
Residuals, % 0 to 0.4
0