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C84500 Brass vs. R30012 Cobalt

C84500 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 C84500 brass and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
220
Elongation at Break, % 28
1.0
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 39
86
Tensile Strength: Ultimate (UTS), MPa 240
830
Tensile Strength: Yield (Proof), MPa 97
650

Thermal Properties

Latent Heat of Fusion, J/g 180
320
Melting Completion (Liquidus), °C 980
1470
Melting Onset (Solidus), °C 840
1280
Specific Heat Capacity, J/kg-K 360
440
Thermal Conductivity, W/m-K 72
15
Thermal Expansion, µm/m-K 19
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 17
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.7
8.8
Embodied Carbon, kg CO2/kg material 2.9
8.3
Embodied Energy, MJ/kg 47
120
Embodied Water, L/kg 340
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 45
960
Stiffness to Weight: Axial, points 6.6
14
Stiffness to Weight: Bending, points 18
23
Strength to Weight: Axial, points 7.7
26
Strength to Weight: Bending, points 9.8
22
Thermal Diffusivity, mm2/s 23
3.8
Thermal Shock Resistance, points 8.6
23

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.25
0
Carbon (C), % 0
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 77 to 79
0
Iron (Fe), % 0 to 0.4
0 to 3.0
Lead (Pb), % 6.0 to 7.5
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 1.0
0 to 3.0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.0050
0 to 2.0
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 2.0 to 4.0
0
Tungsten (W), % 0
7.5 to 9.5
Zinc (Zn), % 10 to 14
0
Residuals, % 0 to 0.7
0