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ASTM B817 Type II vs. AWS BAu-4

ASTM B817 type II belongs to the titanium alloys classification, while AWS BAu-4 belongs to the otherwise unclassified metals. 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 ASTM B817 type II and the bottom bar is AWS BAu-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Poisson's Ratio 0.32
0.4
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 900 to 960
200

Thermal Properties

Latent Heat of Fusion, J/g 400
100
Melting Completion (Liquidus), °C 1580
950
Melting Onset (Solidus), °C 1530
950
Specific Heat Capacity, J/kg-K 550
190
Thermal Expansion, µm/m-K 9.9
14

Otherwise Unclassified Properties

Density, g/cm3 4.6
17

Common Calculations

Stiffness to Weight: Axial, points 13
3.6
Stiffness to Weight: Bending, points 34
9.3
Strength to Weight: Axial, points 55 to 58
3.2
Strength to Weight: Bending, points 45 to 47
4.4
Thermal Shock Resistance, points 62 to 66
9.2

Alloy Composition


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Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0
Chlorine (Cl), % 0 to 0.2
0
Copper (Cu), % 0.35 to 1.0
0
Gold (Au), % 0
81.5 to 82.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
0
Nickel (Ni), % 0
17.4 to 18.5
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Silicon (Si), % 0 to 0.1
0
Sodium (Na), % 0 to 0.2
0
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 82.1 to 87.8
0
Vanadium (V), % 5.0 to 6.0
0
Residuals, % 0 to 0.4
0 to 0.15