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R30008 Cobalt vs. C31600 Bronze

R30008 cobalt belongs to the cobalt alloys classification, while C31600 bronze belongs to the copper alloys. There are 22 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 R30008 cobalt and the bottom bar is C31600 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 1.1 to 73
6.7 to 28
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 83
42
Tensile Strength: Ultimate (UTS), MPa 950 to 1700
270 to 460
Tensile Strength: Yield (Proof), MPa 500 to 1080
80 to 390

Thermal Properties

Latent Heat of Fusion, J/g 320
200
Melting Completion (Liquidus), °C 1400
1040
Melting Onset (Solidus), °C 1330
1010
Specific Heat Capacity, J/kg-K 450
380
Thermal Expansion, µm/m-K 13
18

Otherwise Unclassified Properties

Base Metal Price, % relative 95
29
Density, g/cm3 8.4
8.8
Embodied Carbon, kg CO2/kg material 8.1
2.7
Embodied Energy, MJ/kg 110
43
Embodied Water, L/kg 400
310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 2720
28 to 690
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 31 to 56
8.5 to 15
Strength to Weight: Bending, points 25 to 37
11 to 15
Thermal Shock Resistance, points 25 to 44
9.4 to 16

Alloy Composition

Boron (B), % 0 to 0.0010
0
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 18.5 to 21.5
0
Cobalt (Co), % 39 to 42
0
Copper (Cu), % 0
87.5 to 90.5
Iron (Fe), % 7.6 to 20
0 to 0.1
Lead (Pb), % 0
1.3 to 2.5
Manganese (Mn), % 1.0 to 2.0
0
Molybdenum (Mo), % 6.5 to 7.5
0
Nickel (Ni), % 15 to 18
0.7 to 1.2
Phosphorus (P), % 0 to 0.015
0.040 to 0.1
Silicon (Si), % 0 to 1.2
0
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
5.2 to 10.5
Residuals, % 0
0 to 0.4