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C87900 Brass vs. R30016 Cobalt

C87900 brass belongs to the copper alloys classification, while R30016 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C87900 brass and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 25
8.4
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 41
85
Tensile Strength: Ultimate (UTS), MPa 480
1010
Tensile Strength: Yield (Proof), MPa 240
580

Thermal Properties

Latent Heat of Fusion, J/g 190
320
Melting Completion (Liquidus), °C 930
1360
Melting Onset (Solidus), °C 900
1270
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 20
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 17
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.1
8.5
Embodied Carbon, kg CO2/kg material 2.7
7.7
Embodied Energy, MJ/kg 46
110
Embodied Water, L/kg 320
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
72
Resilience: Unit (Modulus of Resilience), kJ/m3 270
770
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 17
33
Strength to Weight: Bending, points 17
26
Thermal Diffusivity, mm2/s 37
3.9
Thermal Shock Resistance, points 16
24

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 63 to 69.2
0
Iron (Fe), % 0 to 0.4
0 to 3.0
Lead (Pb), % 0 to 0.25
0
Manganese (Mn), % 0 to 0.15
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.5
0 to 3.0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0.8 to 1.2
0.2 to 2.0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0 to 0.25
0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 30 to 36
0