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Annealed 90-platinum 10-iridium vs. Annealed 90-silver 10-nickel

Both annealed 90-platinum 10-iridium and annealed 90-silver 10-nickel are otherwise unclassified metals. Both are furnished in the annealed condition. There are 14 material properties with values for both materials. Properties with values for just one material (5, 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 annealed 90-platinum 10-iridium and the bottom bar is annealed 90-silver 10-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
82
Poisson's Ratio 0.38
0.36
Shear Modulus, GPa 74
30
Tensile Strength: Ultimate (UTS), MPa 330
250

Thermal Properties

Latent Heat of Fusion, J/g 100
130
Melting Completion (Liquidus), °C 1830
840
Specific Heat Capacity, J/kg-K 130
260
Thermal Expansion, µm/m-K 8.6
19

Otherwise Unclassified Properties

Density, g/cm3 22
10

Common Calculations

Stiffness to Weight: Axial, points 5.3
4.4
Stiffness to Weight: Bending, points 9.1
14
Strength to Weight: Axial, points 4.2
6.7
Strength to Weight: Bending, points 4.9
8.5
Thermal Shock Resistance, points 13
11

Alloy Composition

Iridium (Ir), % 9.5 to 10.5
0
Nickel (Ni), % 0
8.8 to 11
Platinum (Pt), % 89.3 to 90.5
0
Silver (Ag), % 0
89 to 91
Residuals, % 0
0 to 0.2