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C95800 Bronze vs. R30816 Cobalt

C95800 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 (7, in this case) are not shown.

For each property being compared, the top bar is C95800 bronze and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 22
23
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 44
81
Tensile Strength: Ultimate (UTS), MPa 660
1020
Tensile Strength: Yield (Proof), MPa 270
460

Thermal Properties

Latent Heat of Fusion, J/g 230
300
Melting Completion (Liquidus), °C 1060
1540
Melting Onset (Solidus), °C 1040
1460
Specific Heat Capacity, J/kg-K 440
420
Thermal Conductivity, W/m-K 36
13
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Density, g/cm3 8.3
9.1
Embodied Carbon, kg CO2/kg material 3.4
20
Embodied Energy, MJ/kg 55
320
Embodied Water, L/kg 370
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
190
Resilience: Unit (Modulus of Resilience), kJ/m3 310
510
Stiffness to Weight: Axial, points 7.9
13
Stiffness to Weight: Bending, points 20
22
Strength to Weight: Axial, points 22
31
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 9.9
3.3
Thermal Shock Resistance, points 23
28

Alloy Composition

Aluminum (Al), % 8.5 to 9.5
0
Carbon (C), % 0
0.32 to 0.42
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
40 to 49.8
Copper (Cu), % 79 to 83.2
0
Iron (Fe), % 3.5 to 4.5
0 to 5.0
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0.8 to 1.5
1.0 to 2.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 4.0 to 5.0
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tungsten (W), % 0
3.5 to 4.5
Residuals, % 0 to 0.5
0