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R31539 Cobalt vs. CC750S Brass

R31539 cobalt belongs to the cobalt alloys classification, while CC750S brass belongs to the copper 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 R31539 cobalt and the bottom bar is CC750S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 13 to 22
13
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 86
40
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
200
Tensile Strength: Yield (Proof), MPa 590 to 940
80

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Melting Completion (Liquidus), °C 1360
860
Melting Onset (Solidus), °C 1290
810
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
26

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 8.2
2.8
Embodied Energy, MJ/kg 110
46
Embodied Water, L/kg 530
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
22
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
30
Stiffness to Weight: Axial, points 15
7.1
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 33 to 44
6.8
Strength to Weight: Bending, points 27 to 32
9.3
Thermal Diffusivity, mm2/s 3.5
35
Thermal Shock Resistance, points 24 to 32
6.7

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0 to 0.1
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Copper (Cu), % 0
62 to 67
Iron (Fe), % 0 to 0.75
0 to 0.8
Lanthanum (La), % 0.030 to 0.2
0
Lead (Pb), % 0
1.0 to 3.0
Manganese (Mn), % 0 to 1.0
0 to 0.2
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0 to 1.0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 1.0
0 to 0.050
Tin (Sn), % 0
0 to 1.5
Zinc (Zn), % 0
26.3 to 36