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ASTM B817 Type II vs. ASTM B540 Palladium

ASTM B817 type II belongs to the titanium alloys classification, while ASTM B540 palladium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (10, 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 ASTM B540 palladium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 3.0 to 13
1.1 to 14
Fatigue Strength, MPa 390 to 530
350
Poisson's Ratio 0.32
0.38
Shear Modulus, GPa 40
39
Tensile Strength: Ultimate (UTS), MPa 900 to 960
830 to 1240
Tensile Strength: Yield (Proof), MPa 780 to 900
620 to 1000

Thermal Properties

Latent Heat of Fusion, J/g 400
140
Melting Completion (Liquidus), °C 1580
1220
Melting Onset (Solidus), °C 1530
1020
Specific Heat Capacity, J/kg-K 550
240
Thermal Expansion, µm/m-K 9.9
14

Otherwise Unclassified Properties

Density, g/cm3 4.6
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 120
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
1790 to 4660
Stiffness to Weight: Axial, points 13
4.7
Stiffness to Weight: Bending, points 34
12
Strength to Weight: Axial, points 55 to 58
18 to 27
Strength to Weight: Bending, points 45 to 47
15 to 20
Thermal Shock Resistance, points 62 to 66
41 to 61

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
13.5 to 14.5
Gold (Au), % 0
9.5 to 10.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
0
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Palladium (Pd), % 0
34 to 36
Platinum (Pt), % 0
9.5 to 10.5
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
29 to 31
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
Zinc (Zn), % 0
0.8 to 1.2
Residuals, % 0 to 0.4
0 to 0.3