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Cold Worked R60901 Alloy vs. Work Hardened 90-platinum 10-iridium

Both cold worked R60901 alloy and work hardened 90-platinum 10-iridium are otherwise unclassified metals. Both are furnished in the cold worked (strain hardened) condition. There are 15 material properties with values for both materials. Properties with values for just one material (7, 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 cold worked R60901 alloy and the bottom bar is work hardened 90-platinum 10-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 17
5.5
Poisson's Ratio 0.34
0.38
Shear Modulus, GPa 37
74
Tensile Strength: Ultimate (UTS), MPa 580
550

Thermal Properties

Latent Heat of Fusion, J/g 250
100
Melting Completion (Liquidus), °C 1870
1830
Specific Heat Capacity, J/kg-K 270
130
Thermal Expansion, µm/m-K 6.3
8.6

Otherwise Unclassified Properties

Density, g/cm3 6.6
22

Common Calculations

Stiffness to Weight: Axial, points 8.3
5.3
Stiffness to Weight: Bending, points 23
9.1
Strength to Weight: Axial, points 25
7.1
Strength to Weight: Bending, points 24
6.9
Thermal Shock Resistance, points 67
22

Alloy Composition

Iridium (Ir), % 0
9.5 to 10.5
Niobium (Nb), % 2.4 to 2.8
0
Platinum (Pt), % 0
89.3 to 90.5
Zirconium (Zr), % 96.8 to 97.5
0
Residuals, % 0
0 to 0.2