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90-platinum 10-iridium vs. ASTM B563 Pd-Ag-Cu

Both 90-platinum 10-iridium and ASTM B563 Pd-Ag-Cu are otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is 90-platinum 10-iridium and the bottom bar is ASTM B563 Pd-Ag-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 5.5 to 34
7.0 to 17
Poisson's Ratio 0.38
0.37
Shear Modulus, GPa 74
37
Shear Strength, MPa 220 to 320
470 to 690
Tensile Strength: Ultimate (UTS), MPa 330 to 550
760 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 100
150
Specific Heat Capacity, J/kg-K 130
260
Thermal Expansion, µm/m-K 8.6
14

Otherwise Unclassified Properties

Density, g/cm3 22
11

Common Calculations

Stiffness to Weight: Axial, points 5.3
5.2
Stiffness to Weight: Bending, points 9.1
14
Strength to Weight: Axial, points 4.2 to 7.1
19 to 30
Strength to Weight: Bending, points 4.9 to 6.9
17 to 22
Thermal Shock Resistance, points 13 to 22
39 to 61

Alloy Composition

Copper (Cu), % 0
15.5 to 16.5
Iridium (Ir), % 9.5 to 10.5
0
Nickel (Ni), % 0
0.8 to 1.2
Palladium (Pd), % 0
43 to 45
Platinum (Pt), % 89.3 to 90.5
0.8 to 1.2
Silver (Ag), % 0
37 to 39
Residuals, % 0
0 to 0.4