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Type 2 Pewter vs. 85-platinum 15-iridium

Both Type 2 pewter and 85-platinum 15-iridium are otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is Type 2 pewter and the bottom bar is 85-platinum 15-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 52
220
Poisson's Ratio 0.35
0.38
Shear Modulus, GPa 19
81
Tensile Strength: Ultimate (UTS), MPa 52 to 68
560 to 730

Thermal Properties

Latent Heat of Fusion, J/g 69
110
Melting Completion (Liquidus), °C 300
1820
Melting Onset (Solidus), °C 240
1790
Specific Heat Capacity, J/kg-K 220
130
Thermal Expansion, µm/m-K 21
8.4

Otherwise Unclassified Properties

Density, g/cm3 7.3
22

Common Calculations

Stiffness to Weight: Axial, points 3.9
5.7
Stiffness to Weight: Bending, points 17
9.3
Strength to Weight: Axial, points 2.0 to 2.6
7.1 to 9.3
Strength to Weight: Bending, points 4.3 to 5.1
6.9 to 8.3
Thermal Shock Resistance, points 3.4 to 4.4
21 to 28

Alloy Composition


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Antimony (Sb), % 5.0 to 7.5
0
Arsenic (As), % 0 to 0.050
0
Copper (Cu), % 1.5 to 3.0
0
Iridium (Ir), % 0
14.5 to 15.5
Iron (Fe), % 0 to 0.015
0
Lead (Pb), % 0 to 0.050
0
Platinum (Pt), % 0
84.3 to 85.5
Tin (Sn), % 90 to 93
0
Zinc (Zn), % 0 to 0.0050
0
Residuals, % 0
0 to 0.2

Comparable Variants