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AWS BAu-5 vs. AWS ERTi-7

AWS BAu-5 belongs to the otherwise unclassified metals classification, while AWS ERTi-7 belongs to the titanium alloys. There are 15 material properties with values for both materials. Properties with values for just one material (14, 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 AWS BAu-5 and the bottom bar is AWS ERTi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
110
Poisson's Ratio 0.37
0.32
Shear Modulus, GPa 50
40
Tensile Strength: Ultimate (UTS), MPa 210
340

Thermal Properties

Latent Heat of Fusion, J/g 180
420
Melting Completion (Liquidus), °C 1170
1670
Melting Onset (Solidus), °C 1140
1620
Specific Heat Capacity, J/kg-K 280
540
Thermal Expansion, µm/m-K 12
8.7

Otherwise Unclassified Properties

Density, g/cm3 13
4.5

Common Calculations

Stiffness to Weight: Axial, points 5.8
13
Stiffness to Weight: Bending, points 13
35
Strength to Weight: Axial, points 4.5
21
Strength to Weight: Bending, points 6.0
24
Thermal Shock Resistance, points 9.0
26

Alloy Composition

Carbon (C), % 0
0 to 0.030
Gold (Au), % 29.5 to 30.5
0
Hydrogen (H), % 0
0 to 0.0080
Iron (Fe), % 0
0 to 0.12
Nickel (Ni), % 35.5 to 36.4
0
Nitrogen (N), % 0
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Palladium (Pd), % 33.5 to 34.5
0.12 to 0.25
Titanium (Ti), % 0
99.417 to 99.8
Residuals, % 0 to 0.15
0