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Commercially Pure Palladium vs. ASTM Grade HD Steel

Commercially pure palladium belongs to the otherwise unclassified metals classification, while ASTM grade HD steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is commercially pure palladium and the bottom bar is ASTM grade HD steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 1.1 to 11
9.1
Poisson's Ratio 0.39
0.27
Shear Modulus, GPa 43
80
Tensile Strength: Ultimate (UTS), MPa 200 to 380
590

Thermal Properties

Latent Heat of Fusion, J/g 160
310
Melting Completion (Liquidus), °C 1550
1410
Melting Onset (Solidus), °C 1550
1370
Specific Heat Capacity, J/kg-K 240
490
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.5

Otherwise Unclassified Properties

Density, g/cm3 12
7.7

Common Calculations

Stiffness to Weight: Axial, points 5.6
15
Stiffness to Weight: Bending, points 14
26
Strength to Weight: Axial, points 4.5 to 8.8
21
Strength to Weight: Bending, points 6.2 to 9.7
20
Thermal Shock Resistance, points 9.8 to 19
19

Alloy Composition

Carbon (C), % 0
0 to 0.5
Chromium (Cr), % 0
26 to 30
Iron (Fe), % 0
58.4 to 70
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
4.0 to 7.0
Palladium (Pd), % 99.8 to 100
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Residuals, % 0 to 0.2
0