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C48500 Brass vs. R30003 Cobalt

C48500 brass belongs to the copper alloys classification, while R30003 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C48500 brass and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
210
Elongation at Break, % 13 to 40
10 to 73
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 39
83
Tensile Strength: Ultimate (UTS), MPa 400 to 500
970 to 1720
Tensile Strength: Yield (Proof), MPa 160 to 320
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 170
310
Melting Completion (Liquidus), °C 900
1400
Melting Onset (Solidus), °C 890
1440
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 120
13
Thermal Expansion, µm/m-K 21
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 23
95
Density, g/cm3 8.1
8.4
Embodied Carbon, kg CO2/kg material 2.7
8.0
Embodied Energy, MJ/kg 46
110
Embodied Water, L/kg 330
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 500
600 to 2790
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 14 to 17
32 to 57
Strength to Weight: Bending, points 15 to 17
26 to 38
Thermal Diffusivity, mm2/s 38
3.3
Thermal Shock Resistance, points 13 to 17
26 to 45

Alloy Composition

Boron (B), % 0
0 to 0.1
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 59 to 62
0
Iron (Fe), % 0 to 0.1
10 to 20.5
Lead (Pb), % 1.3 to 2.2
0
Manganese (Mn), % 0
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 0
14 to 16
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 1.2
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0.5 to 1.0
0
Zinc (Zn), % 34.3 to 39.2
0
Residuals, % 0 to 0.4
0