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C37000 Muntz Metal vs. R30016 Cobalt

C37000 Muntz Metal belongs to the copper alloys classification, while R30016 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is C37000 Muntz Metal and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
220
Elongation at Break, % 40
8.4
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 39
85
Tensile Strength: Ultimate (UTS), MPa 400
1010
Tensile Strength: Yield (Proof), MPa 160
580

Thermal Properties

Latent Heat of Fusion, J/g 170
320
Melting Completion (Liquidus), °C 900
1360
Melting Onset (Solidus), °C 890
1270
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 21
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 30
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.1
8.5
Embodied Carbon, kg CO2/kg material 2.7
7.7
Embodied Energy, MJ/kg 45
110
Embodied Water, L/kg 320
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
72
Resilience: Unit (Modulus of Resilience), kJ/m3 120
770
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 14
33
Strength to Weight: Bending, points 15
26
Thermal Diffusivity, mm2/s 39
3.9
Thermal Shock Resistance, points 13
24

Alloy Composition

Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 59 to 62
0
Iron (Fe), % 0 to 0.15
0 to 3.0
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 0
0.2 to 2.0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 36 to 40.2
0
Residuals, % 0 to 0.4
0