Commercially Pure Palladium vs. EN 1.5521 Steel

Commercially pure palladium belongs to the otherwise unclassified metals classification, while EN 1.5521 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is commercially pure palladium and the bottom bar is EN 1.5521 steel.

Commercially Pure Palladium EN 1.5521 (18MnB4) Boron Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		190

Elongation at Break, %		1.1 to 11
Elongation at Break, %		11 to 21

Poisson's Ratio		0.39
Poisson's Ratio		0.29

Shear Modulus, GPa		43
Shear Modulus, GPa		73

Shear Strength, MPa		120 to 200
Shear Strength, MPa		310 to 360

Tensile Strength: Ultimate (UTS), MPa		200 to 380
Tensile Strength: Ultimate (UTS), MPa		430 to 1390

Thermal Properties

Latent Heat of Fusion, J/g		160
Latent Heat of Fusion, J/g		250

Melting Completion (Liquidus), °C		1550
Melting Completion (Liquidus), °C		1460

Melting Onset (Solidus), °C		1550
Melting Onset (Solidus), °C		1420

Specific Heat Capacity, J/kg-K		240
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		16
Electrical Conductivity: Equal Volume, % IACS		7.1

Electrical Conductivity: Equal Weight (Specific), % IACS		12
Electrical Conductivity: Equal Weight (Specific), % IACS		8.1

Otherwise Unclassified Properties

Density, g/cm³		12
Density, g/cm³		7.8

Common Calculations

Stiffness to Weight: Axial, points		5.6
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		4.5 to 8.8
Strength to Weight: Axial, points		15 to 49

Strength to Weight: Bending, points		6.2 to 9.7
Strength to Weight: Bending, points		16 to 35

Thermal Shock Resistance, points		9.8 to 19
Thermal Shock Resistance, points		13 to 41

Alloy Composition

Boron (B), %		0
Boron (B), %		0.00080 to 0.0050

Carbon (C), %		0
Carbon (C), %		0.16 to 0.2

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Iron (Fe), %		0
Iron (Fe), %		98 to 98.9

Manganese (Mn), %		0
Manganese (Mn), %		0.9 to 1.2

Palladium (Pd), %		99.8 to 100
Palladium (Pd), %		0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.025

Silicon (Si), %		0
Silicon (Si), %		0 to 0.3

Sulfur (S), %		0
Sulfur (S), %		0 to 0.025

Residuals, %		0 to 0.2
Residuals, %		0