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C90800 Bronze vs. R30001 Cobalt

C90800 bronze belongs to the copper alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 23 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 C90800 bronze and the bottom bar is R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 13
1.0
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 40
86
Tensile Strength: Ultimate (UTS), MPa 330
620

Thermal Properties

Latent Heat of Fusion, J/g 190
310
Melting Completion (Liquidus), °C 990
1530
Melting Onset (Solidus), °C 870
1260
Specific Heat Capacity, J/kg-K 370
430
Thermal Conductivity, W/m-K 68
15
Thermal Expansion, µm/m-K 18
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 11
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.7
9.0
Embodied Carbon, kg CO2/kg material 3.8
8.9
Embodied Energy, MJ/kg 62
130
Embodied Water, L/kg 410
460

Common Calculations

Stiffness to Weight: Axial, points 6.9
14
Stiffness to Weight: Bending, points 18
22
Strength to Weight: Axial, points 11
19
Strength to Weight: Bending, points 12
18
Thermal Diffusivity, mm2/s 21
3.7
Thermal Shock Resistance, points 12
19

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Carbon (C), % 0
2.0 to 3.0
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
43 to 59
Copper (Cu), % 85.3 to 89
0
Iron (Fe), % 0 to 0.15
0 to 3.0
Lead (Pb), % 0 to 0.25
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.5
0 to 3.0
Phosphorus (P), % 0 to 0.3
0
Silicon (Si), % 0 to 0.0050
0 to 2.0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 11 to 13
0
Tungsten (W), % 0
11 to 13
Zinc (Zn), % 0 to 0.25
0