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CC761S Brass vs. R30155 Cobalt

CC761S brass belongs to the copper alloys classification, while R30155 cobalt belongs to the iron alloys. There are 27 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 CC761S brass and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
220
Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 8.7
34
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 42
81
Tensile Strength: Ultimate (UTS), MPa 540
850
Tensile Strength: Yield (Proof), MPa 340
390

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 960
1470
Melting Onset (Solidus), °C 910
1420
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 27
12
Thermal Expansion, µm/m-K 18
14

Otherwise Unclassified Properties

Base Metal Price, % relative 27
80
Density, g/cm3 8.3
8.5
Embodied Carbon, kg CO2/kg material 2.7
9.7
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 300
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
230
Resilience: Unit (Modulus of Resilience), kJ/m3 530
370
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 18
28
Strength to Weight: Bending, points 18
24
Thermal Diffusivity, mm2/s 8.0
3.2
Thermal Shock Resistance, points 19
21

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Antimony (Sb), % 0 to 0.050
0
Carbon (C), % 0
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 78 to 83
0
Iron (Fe), % 0 to 0.6
24.3 to 36.2
Lead (Pb), % 0 to 0.8
0
Manganese (Mn), % 0 to 0.2
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0 to 1.0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 3.0 to 5.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tin (Sn), % 0 to 0.3
0
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 8.9 to 19
0