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EN-MC65120 Magnesium vs. 85-platinum 15-iridium

EN-MC65120 magnesium belongs to the magnesium alloys classification, while 85-platinum 15-iridium belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (12, 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-MC65120 magnesium and the bottom bar is 85-platinum 15-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
220
Elongation at Break, % 3.1
5.5 to 34
Poisson's Ratio 0.29
0.38
Shear Modulus, GPa 17
81
Shear Strength, MPa 92
370 to 420
Tensile Strength: Ultimate (UTS), MPa 160
560 to 730

Thermal Properties

Latent Heat of Fusion, J/g 330
110
Melting Completion (Liquidus), °C 590
1820
Melting Onset (Solidus), °C 520
1790
Specific Heat Capacity, J/kg-K 970
130
Thermal Expansion, µm/m-K 26
8.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.6

Otherwise Unclassified Properties

Density, g/cm3 1.9
22

Common Calculations

Stiffness to Weight: Axial, points 13
5.7
Stiffness to Weight: Bending, points 62
9.3
Strength to Weight: Axial, points 23
7.1 to 9.3
Strength to Weight: Bending, points 34
6.9 to 8.3
Thermal Shock Resistance, points 9.8
21 to 28

Alloy Composition

Copper (Cu), % 0 to 0.030
0
Iridium (Ir), % 0
14.5 to 15.5
Iron (Fe), % 0 to 0.010
0
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
0
Platinum (Pt), % 0
84.3 to 85.5
Silicon (Si), % 0 to 0.010
0
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.2