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6262 Aluminum vs. 90-platinum 10-iridium

6262 aluminum belongs to the aluminum alloys classification, while 90-platinum 10-iridium belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (15, 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 6262 aluminum and the bottom bar is 90-platinum 10-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 4.6 to 10
5.5 to 34
Poisson's Ratio 0.33
0.38
Shear Modulus, GPa 26
74
Shear Strength, MPa 170 to 240
220 to 320
Tensile Strength: Ultimate (UTS), MPa 290 to 390
330 to 550

Thermal Properties

Latent Heat of Fusion, J/g 400
100
Specific Heat Capacity, J/kg-K 890
130
Thermal Expansion, µm/m-K 23
8.6

Otherwise Unclassified Properties

Density, g/cm3 2.8
22

Common Calculations

Stiffness to Weight: Axial, points 13
5.3
Stiffness to Weight: Bending, points 48
9.1
Strength to Weight: Axial, points 29 to 39
4.2 to 7.1
Strength to Weight: Bending, points 35 to 42
4.9 to 6.9
Thermal Shock Resistance, points 13 to 18
13 to 22

Alloy Composition

Aluminum (Al), % 94.7 to 97.8
0
Bismuth (Bi), % 0.4 to 0.7
0
Chromium (Cr), % 0.040 to 0.14
0
Copper (Cu), % 0.15 to 0.4
0
Iridium (Ir), % 0
9.5 to 10.5
Iron (Fe), % 0 to 0.7
0
Lead (Pb), % 0.4 to 0.7
0
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0 to 0.15
0
Platinum (Pt), % 0
89.3 to 90.5
Silicon (Si), % 0.4 to 0.8
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.2