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ASTM B780 Alloy vs. Grade Ti-Pd17 Titanium

ASTM B780 alloy belongs to the otherwise unclassified metals classification, while grade Ti-Pd17 titanium belongs to the titanium alloys. There are 16 material properties with values for both materials. Properties with values for just one material (15, 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 B780 alloy and the bottom bar is grade Ti-Pd17 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
110
Elongation at Break, % 1.1 to 9.1
22
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 30
40
Tensile Strength: Ultimate (UTS), MPa 330 to 590
270

Thermal Properties

Latent Heat of Fusion, J/g 140
420
Specific Heat Capacity, J/kg-K 270
540
Thermal Expansion, µm/m-K 18
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 70 to 76
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 62 to 68
7.1

Otherwise Unclassified Properties

Density, g/cm3 10
4.5

Common Calculations

Stiffness to Weight: Axial, points 4.5
13
Stiffness to Weight: Bending, points 14
35
Strength to Weight: Axial, points 9.1 to 16
17
Strength to Weight: Bending, points 11 to 15
21
Thermal Shock Resistance, points 16 to 29
21

Alloy Composition

Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0 to 0.1
Copper (Cu), % 23.5 to 25.7
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.050
0 to 0.2
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0.35 to 0.65
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Palladium (Pd), % 0
0.040 to 0.080
Silver (Ag), % 74 to 76
0
Titanium (Ti), % 0
98.9 to 99.96
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0
0 to 0.4