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Annealed 90-platinum 10-iridium vs. Annealed Palladium

Both annealed 90-platinum 10-iridium and annealed palladium are otherwise unclassified metals. Both are furnished in the annealed condition. There are 16 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is annealed 90-platinum 10-iridium and the bottom bar is annealed palladium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 34
11
Poisson's Ratio 0.38
0.39
Shear Modulus, GPa 74
43
Shear Strength, MPa 220
120
Tensile Strength: Ultimate (UTS), MPa 330
200

Thermal Properties

Latent Heat of Fusion, J/g 100
160
Melting Completion (Liquidus), °C 1830
1550
Specific Heat Capacity, J/kg-K 130
240
Thermal Expansion, µm/m-K 8.6
12

Otherwise Unclassified Properties

Density, g/cm3 22
12

Common Calculations

Stiffness to Weight: Axial, points 5.3
5.6
Stiffness to Weight: Bending, points 9.1
14
Strength to Weight: Axial, points 4.2
4.5
Strength to Weight: Bending, points 4.9
6.2
Thermal Shock Resistance, points 13
9.8

Alloy Composition

Iridium (Ir), % 9.5 to 10.5
0
Palladium (Pd), % 0
99.8 to 100
Platinum (Pt), % 89.3 to 90.5
0
Residuals, % 0
0 to 0.2