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CC754S Brass vs. R30035 Cobalt

CC754S 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 (4, in this case) are not shown.

For each property being compared, the top bar is CC754S brass and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
220 to 230
Elongation at Break, % 11
9.0 to 46
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
84 to 89
Tensile Strength: Ultimate (UTS), MPa 320
900 to 1900
Tensile Strength: Yield (Proof), MPa 160
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 170
320
Melting Completion (Liquidus), °C 830
1440
Melting Onset (Solidus), °C 780
1320
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 95
11
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 30
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 23
100
Density, g/cm3 8.1
8.7
Embodied Carbon, kg CO2/kg material 2.8
10
Embodied Energy, MJ/kg 47
140
Embodied Water, L/kg 330
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 130
210 to 5920
Stiffness to Weight: Axial, points 7.2
14 to 15
Stiffness to Weight: Bending, points 19
23 to 24
Strength to Weight: Axial, points 11
29 to 61
Strength to Weight: Bending, points 13
24 to 39
Thermal Diffusivity, mm2/s 31
3.0
Thermal Shock Resistance, points 10
23 to 46

Alloy Composition

Aluminum (Al), % 0 to 0.8
0
Boron (B), % 0
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), % 57 to 63
0
Iron (Fe), % 0 to 0.7
0 to 1.0
Lead (Pb), % 0.5 to 2.5
0
Manganese (Mn), % 0 to 0.5
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0 to 1.0
33 to 37
Phosphorus (P), % 0 to 0.020
0 to 0.015
Silicon (Si), % 0 to 0.3
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0 to 1.0
0
Titanium (Ti), % 0
0 to 1.0
Zinc (Zn), % 30.2 to 42.5
0