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AWS BVAu-7 vs. Grade 20 Titanium

AWS BVAu-7 belongs to the otherwise unclassified metals classification, while grade 20 titanium belongs to the titanium alloys. There are 15 material properties with values for both materials. Properties with values for just one material (12, 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 BVAu-7 and the bottom bar is grade 20 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
120
Poisson's Ratio 0.38
0.32
Shear Modulus, GPa 45
47
Tensile Strength: Ultimate (UTS), MPa 200
900 to 1270

Thermal Properties

Latent Heat of Fusion, J/g 140
400
Melting Completion (Liquidus), °C 1120
1660
Melting Onset (Solidus), °C 1100
1600
Specific Heat Capacity, J/kg-K 240
520
Thermal Expansion, µm/m-K 13
9.6

Otherwise Unclassified Properties

Density, g/cm3 15
5.0

Common Calculations

Stiffness to Weight: Axial, points 4.7
14
Stiffness to Weight: Bending, points 11
33
Strength to Weight: Axial, points 3.7
50 to 70
Strength to Weight: Bending, points 5.1
41 to 52
Thermal Shock Resistance, points 8.9
55 to 77

Alloy Composition

Aluminum (Al), % 0
3.0 to 4.0
Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0 to 0.050
Chromium (Cr), % 0
5.5 to 6.5
Cobalt (Co), % 0 to 0.060
0
Gold (Au), % 49.5 to 50.5
0
Hydrogen (H), % 0
0 to 0.020
Iron (Fe), % 0
0 to 0.3
Lead (Pb), % 0 to 0.0020
0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 24.5 to 25.5
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.12
Palladium (Pd), % 23.9 to 26
0.040 to 0.080
Phosphorus (P), % 0 to 0.0020
0
Titanium (Ti), % 0
71 to 77
Vanadium (V), % 0
7.5 to 8.5
Zinc (Zn), % 0 to 0.0010
0
Zirconium (Zr), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4