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AWS BAu-1 vs. 85-platinum 15-iridium

Both AWS BAu-1 and 85-platinum 15-iridium are otherwise unclassified metals. There are 15 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 85-platinum 15-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Poisson's Ratio 0.37
0.38
Shear Modulus, GPa 40
81
Tensile Strength: Ultimate (UTS), MPa 210
560 to 730

Thermal Properties

Latent Heat of Fusion, J/g 150
110
Melting Completion (Liquidus), °C 1020
1820
Melting Onset (Solidus), °C 990
1790
Specific Heat Capacity, J/kg-K 290
130
Thermal Expansion, µm/m-K 16
8.4

Otherwise Unclassified Properties

Density, g/cm3 13
22

Common Calculations

Stiffness to Weight: Axial, points 4.7
5.7
Stiffness to Weight: Bending, points 12
9.3
Strength to Weight: Axial, points 4.5
7.1 to 9.3
Strength to Weight: Bending, points 6.1
6.9 to 8.3
Thermal Shock Resistance, points 8.5
21 to 28

Alloy Composition

Copper (Cu), % 61.9 to 63
0
Gold (Au), % 37 to 38
0
Iridium (Ir), % 0
14.5 to 15.5
Platinum (Pt), % 0
84.3 to 85.5
Residuals, % 0 to 0.15
0 to 0.2