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R30021 Cobalt vs. Type 2 Pewter

R30021 cobalt belongs to the cobalt alloys classification, while Type 2 pewter belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is R30021 cobalt and the bottom bar is Type 2 pewter.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
52
Poisson's Ratio 0.29
0.35
Shear Modulus, GPa 86
19
Tensile Strength: Ultimate (UTS), MPa 700
52 to 68

Thermal Properties

Latent Heat of Fusion, J/g 330
69
Melting Completion (Liquidus), °C 1350
300
Melting Onset (Solidus), °C 1190
240
Specific Heat Capacity, J/kg-K 450
220
Thermal Expansion, µm/m-K 11
21

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.3
Embodied Carbon, kg CO2/kg material 8.0
12
Embodied Energy, MJ/kg 110
210
Embodied Water, L/kg 520
1220

Common Calculations

Stiffness to Weight: Axial, points 15
3.9
Stiffness to Weight: Bending, points 24
17
Strength to Weight: Axial, points 23
2.0 to 2.6
Strength to Weight: Bending, points 21
4.3 to 5.1
Thermal Shock Resistance, points 21
3.4 to 4.4

Alloy Composition

Antimony (Sb), % 0
5.0 to 7.5
Arsenic (As), % 0
0 to 0.050
Carbon (C), % 0.2 to 0.35
0
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 61.7 to 67.3
0
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 0 to 3.0
0 to 0.015
Lead (Pb), % 0
0 to 0.050
Molybdenum (Mo), % 4.5 to 6.0
0
Nickel (Ni), % 2.0 to 3.0
0
Silicon (Si), % 0 to 1.5
0
Tin (Sn), % 0
90 to 93
Zinc (Zn), % 0
0 to 0.0050