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C99750 Brass vs. R30155 Cobalt

C99750 brass belongs to the copper alloys classification, while R30155 cobalt belongs to the iron alloys. There are 25 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 C99750 brass and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 120
220
Elastic (Young's, Tensile) Modulus, GPa 130
210
Elongation at Break, % 20 to 30
34
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 48
81
Tensile Strength: Ultimate (UTS), MPa 450 to 520
850
Tensile Strength: Yield (Proof), MPa 220 to 280
390

Thermal Properties

Latent Heat of Fusion, J/g 200
300
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 840
1470
Melting Onset (Solidus), °C 820
1420
Specific Heat Capacity, J/kg-K 410
450
Thermal Expansion, µm/m-K 20
14

Otherwise Unclassified Properties

Base Metal Price, % relative 23
80
Density, g/cm3 8.1
8.5
Embodied Carbon, kg CO2/kg material 3.1
9.7
Embodied Energy, MJ/kg 51
150
Embodied Water, L/kg 310
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 110
230
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 300
370
Stiffness to Weight: Axial, points 8.6
14
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 15 to 18
28
Strength to Weight: Bending, points 16 to 18
24
Thermal Shock Resistance, points 13 to 15
21

Alloy Composition

Aluminum (Al), % 0.25 to 3.0
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), % 55 to 61
0
Iron (Fe), % 0 to 1.0
24.3 to 36.2
Lead (Pb), % 0.5 to 2.5
0
Manganese (Mn), % 17 to 23
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0 to 5.0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 17 to 23
0
Residuals, % 0 to 0.3
0