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ASTM B817 Type I vs. AWS BAu-5

ASTM B817 type I belongs to the titanium alloys classification, while AWS BAu-5 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (16, 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 I and the bottom bar is AWS BAu-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
140
Poisson's Ratio 0.32
0.37
Shear Modulus, GPa 40
50
Tensile Strength: Ultimate (UTS), MPa 770 to 960
210

Thermal Properties

Latent Heat of Fusion, J/g 410
180
Melting Completion (Liquidus), °C 1600
1170
Melting Onset (Solidus), °C 1550
1140
Specific Heat Capacity, J/kg-K 560
280
Thermal Expansion, µm/m-K 9.6
12

Otherwise Unclassified Properties

Density, g/cm3 4.4
13

Common Calculations

Stiffness to Weight: Axial, points 13
5.8
Stiffness to Weight: Bending, points 35
13
Strength to Weight: Axial, points 48 to 60
4.5
Strength to Weight: Bending, points 42 to 49
6.0
Thermal Shock Resistance, points 54 to 68
9.0

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.1
0
Chlorine (Cl), % 0 to 0.2
0
Gold (Au), % 0
29.5 to 30.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0
Nickel (Ni), % 0
35.5 to 36.4
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Palladium (Pd), % 0
33.5 to 34.5
Silicon (Si), % 0 to 0.1
0
Sodium (Na), % 0 to 0.2
0
Titanium (Ti), % 87 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.15