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C84000 Brass vs. R30155 Cobalt

C84000 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 C84000 brass and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65
220
Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 27
34
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 42
81
Tensile Strength: Ultimate (UTS), MPa 250
850
Tensile Strength: Yield (Proof), MPa 140
390

Thermal Properties

Latent Heat of Fusion, J/g 190
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 1040
1470
Melting Onset (Solidus), °C 940
1420
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 72
12
Thermal Expansion, µm/m-K 18
14

Otherwise Unclassified Properties

Base Metal Price, % relative 30
80
Density, g/cm3 8.6
8.5
Embodied Carbon, kg CO2/kg material 3.0
9.7
Embodied Energy, MJ/kg 49
150
Embodied Water, L/kg 330
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 58
230
Resilience: Unit (Modulus of Resilience), kJ/m3 83
370
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 8.2
28
Strength to Weight: Bending, points 10
24
Thermal Diffusivity, mm2/s 22
3.2
Thermal Shock Resistance, points 9.0
21

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.020
0
Boron (B), % 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), % 82 to 89
0
Iron (Fe), % 0 to 0.4
24.3 to 36.2
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0 to 0.010
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0.5 to 2.0
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 0.0050
0 to 1.0
Sulfur (S), % 0.1 to 0.65
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tin (Sn), % 2.0 to 4.0
0
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 5.0 to 14
0
Zirconium (Zr), % 0 to 0.1
0
Residuals, % 0 to 0.7
0