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C35000 Brass vs. R30075 Cobalt

C35000 brass belongs to the copper alloys classification, while R30075 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is C35000 brass and the bottom bar is R30075 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
210 to 250
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
82 to 98
Tensile Strength: Ultimate (UTS), MPa 340 to 650
780 to 1280

Thermal Properties

Latent Heat of Fusion, J/g 170
320
Melting Completion (Liquidus), °C 920
1360
Melting Onset (Solidus), °C 890
1290
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 120
13
Thermal Expansion, µm/m-K 21
12

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

Stiffness to Weight: Axial, points 7.1
14 to 17
Stiffness to Weight: Bending, points 19
24 to 25
Strength to Weight: Axial, points 12 to 22
26 to 42
Strength to Weight: Bending, points 13 to 21
22 to 31
Thermal Diffusivity, mm2/s 37
3.5
Thermal Shock Resistance, points 11 to 22
21 to 29

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Boron (B), % 0
0 to 0.010
Carbon (C), % 0
0 to 0.35
Chromium (Cr), % 0
27 to 30
Cobalt (Co), % 0
58.7 to 68
Copper (Cu), % 60 to 63
0
Iron (Fe), % 0 to 0.1
0 to 0.75
Lead (Pb), % 0.8 to 2.0
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 0
0 to 0.2
Zinc (Zn), % 34.5 to 39.2
0
Residuals, % 0 to 0.4
0