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R60705 Alloy vs. AWS BAu-4

Both R60705 alloy and AWS BAu-4 are otherwise unclassified metals. There are 13 material properties with values for both materials. Properties with values for just one material (11, 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 R60705 alloy and the bottom bar is AWS BAu-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
110
Poisson's Ratio 0.34
0.4
Shear Modulus, GPa 37
41
Tensile Strength: Ultimate (UTS), MPa 540
200

Thermal Properties

Latent Heat of Fusion, J/g 250
100
Specific Heat Capacity, J/kg-K 270
190
Thermal Expansion, µm/m-K 6.3
14

Otherwise Unclassified Properties

Density, g/cm3 6.7
17

Common Calculations

Stiffness to Weight: Axial, points 8.1
3.6
Stiffness to Weight: Bending, points 23
9.3
Strength to Weight: Axial, points 22
3.2
Strength to Weight: Bending, points 22
4.4
Thermal Shock Resistance, points 63
9.2

Alloy Composition


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Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 0 to 0.2
0
Gold (Au), % 0
81.5 to 82.5
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.2
0
Nickel (Ni), % 0
17.4 to 18.5
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.025
0
Oxygen (O), % 0 to 0.18
0
Zirconium (Zr), % 91 to 98
0
Residuals, % 0
0 to 0.15