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Class 4 Tungsten vs. AWS BAu-1

Both class 4 tungsten and AWS BAu-1 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 13 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is class 4 tungsten and the bottom bar is AWS BAu-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
110
Poisson's Ratio 0.28
0.37
Shear Modulus, GPa 110
40
Tensile Strength: Ultimate (UTS), MPa 790
210

Thermal Properties

Latent Heat of Fusion, J/g 170
150
Specific Heat Capacity, J/kg-K 130
290
Thermal Expansion, µm/m-K 4.5
16

Otherwise Unclassified Properties

Density, g/cm3 16
13

Common Calculations

Stiffness to Weight: Axial, points 9.6
4.7
Stiffness to Weight: Bending, points 14
12
Strength to Weight: Axial, points 14
4.5
Strength to Weight: Bending, points 12
6.1
Thermal Shock Resistance, points 46
8.5

Alloy Composition


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Copper (Cu), % 0
61.9 to 63
Gold (Au), % 0
37 to 38
Tungsten (W), % 97
0
Residuals, % 3.0
0 to 0.15