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AWS BAu-1 vs. 90-platinum 10-iridium

Both AWS BAu-1 and 90-platinum 10-iridium are otherwise unclassified metals. There are 13 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 AWS BAu-1 and the bottom bar is 90-platinum 10-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Poisson's Ratio 0.37
0.38
Shear Modulus, GPa 40
74
Tensile Strength: Ultimate (UTS), MPa 210
330 to 550

Thermal Properties

Latent Heat of Fusion, J/g 150
100
Specific Heat Capacity, J/kg-K 290
130
Thermal Expansion, µm/m-K 16
8.6

Otherwise Unclassified Properties

Density, g/cm3 13
22

Common Calculations

Stiffness to Weight: Axial, points 4.7
5.3
Stiffness to Weight: Bending, points 12
9.1
Strength to Weight: Axial, points 4.5
4.2 to 7.1
Strength to Weight: Bending, points 6.1
4.9 to 6.9
Thermal Shock Resistance, points 8.5
13 to 22

Alloy Composition

Copper (Cu), % 61.9 to 63
0
Gold (Au), % 37 to 38
0
Iridium (Ir), % 0
9.5 to 10.5
Platinum (Pt), % 0
89.3 to 90.5
Residuals, % 0 to 0.15
0 to 0.2