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C68400 Brass vs. R30035 Cobalt

C68400 brass belongs to the copper alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C68400 brass and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220 to 230
Elongation at Break, % 18
9.0 to 46
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 41
84 to 89
Tensile Strength: Ultimate (UTS), MPa 540
900 to 1900
Tensile Strength: Yield (Proof), MPa 310
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 210
320
Melting Completion (Liquidus), °C 840
1440
Melting Onset (Solidus), °C 820
1320
Specific Heat Capacity, J/kg-K 400
440
Thermal Conductivity, W/m-K 66
11
Thermal Expansion, µm/m-K 20
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 99
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 23
100
Density, g/cm3 7.9
8.7
Embodied Carbon, kg CO2/kg material 2.7
10
Embodied Energy, MJ/kg 47
140
Embodied Water, L/kg 320
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 460
210 to 5920
Stiffness to Weight: Axial, points 7.5
14 to 15
Stiffness to Weight: Bending, points 20
23 to 24
Strength to Weight: Axial, points 19
29 to 61
Strength to Weight: Bending, points 19
24 to 39
Thermal Diffusivity, mm2/s 21
3.0
Thermal Shock Resistance, points 18
23 to 46

Alloy Composition


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Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0 to 0.015
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Copper (Cu), % 59 to 64
0
Iron (Fe), % 0 to 1.0
0 to 1.0
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0.2 to 1.5
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0 to 0.5
33 to 37
Phosphorus (P), % 0.030 to 0.3
0 to 0.015
Silicon (Si), % 1.5 to 2.5
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0 to 0.5
0
Titanium (Ti), % 0
0 to 1.0
Zinc (Zn), % 28.6 to 39.3
0
Residuals, % 0 to 0.5
0