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AM60A Magnesium vs. 85-platinum 15-iridium

AM60A 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 AM60A 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, % 8.8
5.5 to 34
Poisson's Ratio 0.29
0.38
Shear Modulus, GPa 18
81
Shear Strength, MPa 130
370 to 420
Tensile Strength: Ultimate (UTS), MPa 230
560 to 730

Thermal Properties

Latent Heat of Fusion, J/g 350
110
Melting Completion (Liquidus), °C 620
1820
Melting Onset (Solidus), °C 550
1790
Specific Heat Capacity, J/kg-K 1000
130
Thermal Expansion, µm/m-K 26
8.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 69
2.6

Otherwise Unclassified Properties

Density, g/cm3 1.7
22

Common Calculations

Stiffness to Weight: Axial, points 15
5.7
Stiffness to Weight: Bending, points 71
9.3
Strength to Weight: Axial, points 37
7.1 to 9.3
Strength to Weight: Bending, points 49
6.9 to 8.3
Thermal Shock Resistance, points 14
21 to 28

Alloy Composition


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Aluminum (Al), % 5.5 to 6.5
0
Copper (Cu), % 0 to 0.35
0
Iridium (Ir), % 0
14.5 to 15.5
Magnesium (Mg), % 91.8 to 94.4
0
Manganese (Mn), % 0.13 to 0.6
0
Nickel (Ni), % 0 to 0.030
0
Platinum (Pt), % 0
84.3 to 85.5
Silicon (Si), % 0 to 0.5
0
Zinc (Zn), % 0 to 0.22
0
Residuals, % 0
0 to 0.2