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R05240 Alloy vs. 90-platinum 10-iridium

Both R05240 alloy and 90-platinum 10-iridium are otherwise unclassified metals. There are 14 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 R05240 alloy and the bottom bar is 90-platinum 10-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
200
Elongation at Break, % 25
5.5 to 34
Poisson's Ratio 0.36
0.38
Shear Modulus, GPa 57
74
Tensile Strength: Ultimate (UTS), MPa 270
330 to 550

Thermal Properties

Latent Heat of Fusion, J/g 210
100
Specific Heat Capacity, J/kg-K 190
130
Thermal Expansion, µm/m-K 6.8
8.6

Otherwise Unclassified Properties

Density, g/cm3 14
22

Common Calculations

Stiffness to Weight: Axial, points 6.3
5.3
Stiffness to Weight: Bending, points 13
9.1
Strength to Weight: Axial, points 5.4
4.2 to 7.1
Strength to Weight: Bending, points 6.8
4.9 to 6.9
Thermal Shock Resistance, points 18
13 to 22

Alloy Composition

Carbon (C), % 0 to 0.010
0
Hydrogen (H), % 0 to 0.0015
0
Iridium (Ir), % 0
9.5 to 10.5
Iron (Fe), % 0 to 0.010
0
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.010
0
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.020
0
Platinum (Pt), % 0
89.3 to 90.5
Silicon (Si), % 0 to 0.0050
0
Tantalum (Ta), % 57.9 to 65
0
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0 to 0.050
0
Residuals, % 0
0 to 0.2