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CC332G Bronze vs. R30021 Cobalt

CC332G bronze belongs to the copper alloys classification, while R30021 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is CC332G bronze and the bottom bar is R30021 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 22
9.0
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
86
Tensile Strength: Ultimate (UTS), MPa 620
700
Tensile Strength: Yield (Proof), MPa 250
500

Thermal Properties

Latent Heat of Fusion, J/g 230
330
Melting Completion (Liquidus), °C 1060
1350
Melting Onset (Solidus), °C 1010
1190
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 45
15
Thermal Expansion, µm/m-K 18
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.3
8.4
Embodied Carbon, kg CO2/kg material 3.4
8.0
Embodied Energy, MJ/kg 55
110
Embodied Water, L/kg 390
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
57
Resilience: Unit (Modulus of Resilience), kJ/m3 270
570
Stiffness to Weight: Axial, points 7.7
15
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 21
23
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 12
3.8
Thermal Shock Resistance, points 21
21

Alloy Composition

Aluminum (Al), % 8.5 to 10.5
0
Carbon (C), % 0
0.2 to 0.35
Chromium (Cr), % 0
26 to 29
Cobalt (Co), % 0
61.7 to 67.3
Copper (Cu), % 80 to 86
0
Iron (Fe), % 1.0 to 3.0
0 to 3.0
Lead (Pb), % 0 to 0.1
0
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0
4.5 to 6.0
Nickel (Ni), % 1.5 to 4.0
2.0 to 3.0
Silicon (Si), % 0 to 0.2
0 to 1.5
Tin (Sn), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.5
0