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Commercially Pure Palladium vs. ACI-ASTM CB7Cu-1 Steel

Commercially pure palladium belongs to the otherwise unclassified metals classification, while ACI-ASTM CB7Cu-1 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 ACI-ASTM CB7Cu-1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 1.1 to 11
5.7 to 11
Poisson's Ratio 0.39
0.28
Shear Modulus, GPa 43
76
Tensile Strength: Ultimate (UTS), MPa 200 to 380
960 to 1350

Thermal Properties

Latent Heat of Fusion, J/g 160
280
Melting Completion (Liquidus), °C 1550
1430
Melting Onset (Solidus), °C 1550
1500
Specific Heat Capacity, J/kg-K 240
480
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.3

Otherwise Unclassified Properties

Density, g/cm3 12
7.8

Common Calculations

Stiffness to Weight: Axial, points 5.6
14
Stiffness to Weight: Bending, points 14
25
Strength to Weight: Axial, points 4.5 to 8.8
34 to 48
Strength to Weight: Bending, points 6.2 to 9.7
28 to 35
Thermal Shock Resistance, points 9.8 to 19
32 to 45

Alloy Composition

Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
15.5 to 17.7
Copper (Cu), % 0
2.5 to 3.2
Iron (Fe), % 0
72.3 to 78.4
Manganese (Mn), % 0
0 to 0.7
Nickel (Ni), % 0
3.6 to 4.6
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Palladium (Pd), % 99.8 to 100
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.2
0