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R31538 Cobalt vs. C36200 Brass

R31538 cobalt belongs to the cobalt alloys classification, while C36200 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is C36200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Elongation at Break, % 13 to 23
20 to 53
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 86
39
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
340 to 420
Tensile Strength: Yield (Proof), MPa 580 to 930
130 to 360

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Melting Completion (Liquidus), °C 1360
900
Melting Onset (Solidus), °C 1290
890
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 13
120
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
26
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
28

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 8.1
2.6
Embodied Energy, MJ/kg 110
45
Embodied Water, L/kg 530
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
74 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
89 to 630
Stiffness to Weight: Axial, points 15
6.9
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 34 to 45
11 to 14
Strength to Weight: Bending, points 27 to 32
13 to 15
Thermal Diffusivity, mm2/s 3.5
37
Thermal Shock Resistance, points 25 to 33
11 to 14

Alloy Composition

Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
60 to 63
Iron (Fe), % 0 to 0.75
0 to 0.15
Lead (Pb), % 0
3.5 to 4.5
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
32.4 to 36.5