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Grade Ti-Pd18 Titanium vs. ASTM B628 Ag-Cu

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while ASTM B628 Ag-Cu belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (13, 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 grade Ti-Pd18 titanium and the bottom bar is ASTM B628 Ag-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
83
Elongation at Break, % 17
1.1 to 17
Poisson's Ratio 0.32
0.36
Shear Modulus, GPa 40
31
Tensile Strength: Ultimate (UTS), MPa 710
350 to 760

Thermal Properties

Latent Heat of Fusion, J/g 410
140
Melting Completion (Liquidus), °C 1640
780
Melting Onset (Solidus), °C 1590
780
Specific Heat Capacity, J/kg-K 550
280
Thermal Expansion, µm/m-K 9.1
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
84
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
75

Otherwise Unclassified Properties

Density, g/cm3 4.5
10

Common Calculations

Stiffness to Weight: Axial, points 13
4.6
Stiffness to Weight: Bending, points 35
14
Strength to Weight: Axial, points 44
9.5 to 21
Strength to Weight: Bending, points 39
11 to 18
Thermal Shock Resistance, points 52
16 to 34

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0 to 0.1
0
Copper (Cu), % 0
26.6 to 29
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Nickel (Ni), % 0 to 0.050
0 to 0.010
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.030
Silver (Ag), % 0
71 to 73
Titanium (Ti), % 92.5 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0
0 to 0.21