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EN 1.4587 Stainless Steel vs. 90-platinum 10-iridium

EN 1.4587 stainless steel belongs to the iron alloys classification, while 90-platinum 10-iridium belongs to the otherwise unclassified metals. There are 14 material properties with values for both materials. Properties with values for just one material (20, 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 EN 1.4587 stainless steel and the bottom bar is 90-platinum 10-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
5.5 to 34
Poisson's Ratio 0.28
0.38
Shear Modulus, GPa 80
74
Tensile Strength: Ultimate (UTS), MPa 540
330 to 550

Thermal Properties

Latent Heat of Fusion, J/g 310
100
Specific Heat Capacity, J/kg-K 470
130
Thermal Expansion, µm/m-K 15
8.6

Otherwise Unclassified Properties

Density, g/cm3 8.1
22

Common Calculations

Stiffness to Weight: Axial, points 14
5.3
Stiffness to Weight: Bending, points 24
9.1
Strength to Weight: Axial, points 18
4.2 to 7.1
Strength to Weight: Bending, points 18
4.9 to 6.9
Thermal Shock Resistance, points 13
13 to 22

Alloy Composition


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Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 2.0 to 3.0
0
Iridium (Ir), % 0
9.5 to 10.5
Iron (Fe), % 32.7 to 41.9
0
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 28 to 30
0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.035
0
Platinum (Pt), % 0
89.3 to 90.5
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.025
0
Residuals, % 0
0 to 0.2