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C53800 Bronze vs. R30816 Cobalt

C53800 bronze belongs to the copper alloys classification, while R30816 cobalt belongs to the cobalt alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C53800 bronze and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 2.3
23
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 40
81
Tensile Strength: Ultimate (UTS), MPa 830
1020
Tensile Strength: Yield (Proof), MPa 660
460

Thermal Properties

Latent Heat of Fusion, J/g 190
300
Melting Completion (Liquidus), °C 980
1540
Melting Onset (Solidus), °C 800
1460
Specific Heat Capacity, J/kg-K 360
420
Thermal Conductivity, W/m-K 61
13
Thermal Expansion, µm/m-K 18
12

Otherwise Unclassified Properties

Density, g/cm3 8.7
9.1
Embodied Carbon, kg CO2/kg material 3.9
20
Embodied Energy, MJ/kg 64
320
Embodied Water, L/kg 420
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18
190
Resilience: Unit (Modulus of Resilience), kJ/m3 2020
510
Stiffness to Weight: Axial, points 6.8
13
Stiffness to Weight: Bending, points 18
22
Strength to Weight: Axial, points 26
31
Strength to Weight: Bending, points 22
25
Thermal Diffusivity, mm2/s 19
3.3
Thermal Shock Resistance, points 31
28

Alloy Composition

Carbon (C), % 0
0.32 to 0.42
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
40 to 49.8
Copper (Cu), % 85.1 to 86.5
0
Iron (Fe), % 0 to 0.030
0 to 5.0
Lead (Pb), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.060
1.0 to 2.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 0 to 0.030
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tin (Sn), % 13.1 to 13.9
0
Tungsten (W), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.12
0
Residuals, % 0 to 0.2
0