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C44400 Brass vs. R31538 Cobalt

C44400 brass belongs to the copper alloys classification, while R31538 cobalt belongs to the cobalt alloys. There are 24 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 C44400 brass and the bottom bar is R31538 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
86
Tensile Strength: Ultimate (UTS), MPa 350
1020 to 1360
Tensile Strength: Yield (Proof), MPa 120
580 to 930

Thermal Properties

Latent Heat of Fusion, J/g 180
320
Melting Completion (Liquidus), °C 940
1360
Melting Onset (Solidus), °C 900
1290
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 110
13
Thermal Expansion, µm/m-K 20
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 27
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.3
8.4
Embodied Carbon, kg CO2/kg material 2.8
8.1
Embodied Energy, MJ/kg 46
110
Embodied Water, L/kg 330
530

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 65
750 to 1920
Stiffness to Weight: Axial, points 7.2
15
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 12
34 to 45
Strength to Weight: Bending, points 13
27 to 32
Thermal Diffusivity, mm2/s 35
3.5
Thermal Shock Resistance, points 12
25 to 33

Alloy Composition


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Antimony (Sb), % 0.020 to 0.1
0
Carbon (C), % 0
0.15 to 0.35
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.7 to 68.9
Copper (Cu), % 70 to 73
0
Iron (Fe), % 0 to 0.060
0 to 0.75
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Silicon (Si), % 0
0 to 1.0
Tin (Sn), % 0.9 to 1.2
0
Zinc (Zn), % 25.2 to 29.1
0
Residuals, % 0 to 0.4
0