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R31537 Cobalt vs. C33000 Brass

R31537 cobalt belongs to the cobalt alloys classification, while C33000 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R31537 cobalt and the bottom bar is C33000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 14 to 23
7.0 to 60
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 87
40
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
320 to 520
Tensile Strength: Yield (Proof), MPa 590 to 940
110 to 450

Thermal Properties

Latent Heat of Fusion, J/g 320
180
Melting Completion (Liquidus), °C 1360
940
Melting Onset (Solidus), °C 1290
900
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
120
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
26
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
29

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 8.1
2.7
Embodied Energy, MJ/kg 110
45
Embodied Water, L/kg 530
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
35 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
60 to 950
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 33 to 44
11 to 18
Strength to Weight: Bending, points 26 to 32
13 to 18
Thermal Diffusivity, mm2/s 3.4
37
Thermal Shock Resistance, points 24 to 32
11 to 17

Alloy Composition

Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.9 to 69
0
Copper (Cu), % 0
65 to 68
Iron (Fe), % 0 to 0.75
0 to 0.070
Lead (Pb), % 0
0.25 to 0.7
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0
Zinc (Zn), % 0
30.8 to 34.8
Residuals, % 0
0 to 0.4