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CC750S Brass vs. R30155 Cobalt

CC750S 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 CC750S brass and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 54
220
Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 13
34
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
81
Tensile Strength: Ultimate (UTS), MPa 200
850
Tensile Strength: Yield (Proof), MPa 80
390

Thermal Properties

Latent Heat of Fusion, J/g 170
300
Maximum Temperature: Mechanical, °C 130
1100
Melting Completion (Liquidus), °C 860
1470
Melting Onset (Solidus), °C 810
1420
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 110
12
Thermal Expansion, µm/m-K 20
14

Otherwise Unclassified Properties

Base Metal Price, % relative 25
80
Density, g/cm3 8.2
8.5
Embodied Carbon, kg CO2/kg material 2.8
9.7
Embodied Energy, MJ/kg 46
150
Embodied Water, L/kg 330
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
230
Resilience: Unit (Modulus of Resilience), kJ/m3 30
370
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 6.8
28
Strength to Weight: Bending, points 9.3
24
Thermal Diffusivity, mm2/s 35
3.2
Thermal Shock Resistance, points 6.7
21

Alloy Composition

Aluminum (Al), % 0 to 0.1
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), % 62 to 67
0
Iron (Fe), % 0 to 0.8
24.3 to 36.2
Lead (Pb), % 1.0 to 3.0
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 0.050
0 to 0.040
Silicon (Si), % 0 to 0.050
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tin (Sn), % 0 to 1.5
0
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 26.3 to 36
0