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R30006 Cobalt vs. C28500 Muntz Metal

R30006 cobalt belongs to the cobalt alloys classification, while C28500 Muntz Metal belongs to the copper alloys. There are 26 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 R30006 cobalt and the bottom bar is C28500 Muntz Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Elongation at Break, % 1.0
20
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 85
40
Tensile Strength: Ultimate (UTS), MPa 900
520
Tensile Strength: Yield (Proof), MPa 540
380

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Melting Completion (Liquidus), °C 1400
900
Melting Onset (Solidus), °C 1290
890
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 15
100
Thermal Expansion, µm/m-K 11
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
29
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
33

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.9
Embodied Carbon, kg CO2/kg material 7.8
2.7
Embodied Energy, MJ/kg 110
46
Embodied Water, L/kg 500
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
94
Resilience: Unit (Modulus of Resilience), kJ/m3 670
700
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 29
18
Strength to Weight: Bending, points 24
18
Thermal Diffusivity, mm2/s 3.9
33
Thermal Shock Resistance, points 26
17

Alloy Composition


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Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
57 to 59
Iron (Fe), % 0 to 3.0
0 to 0.35
Lead (Pb), % 0
0 to 0.25
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
0
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
39.5 to 43
Residuals, % 0
0 to 0.9