C46400 Brass vs. ASTM B540 Palladium

C46400 brass belongs to the copper alloys classification, while ASTM B540 palladium belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is C46400 brass and the bottom bar is ASTM B540 palladium.

UNS C46400 (CW712R) Naval Brass ASTM B540 Palladium Electrical Contact Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		110

Elongation at Break, %		17 to 40
Elongation at Break, %		1.1 to 14

Poisson's Ratio		0.31
Poisson's Ratio		0.38

Shear Modulus, GPa		40
Shear Modulus, GPa		39

Shear Strength, MPa		270 to 310
Shear Strength, MPa		500 to 700

Tensile Strength: Ultimate (UTS), MPa		400 to 500
Tensile Strength: Ultimate (UTS), MPa		830 to 1240

Tensile Strength: Yield (Proof), MPa		160 to 320
Tensile Strength: Yield (Proof), MPa		620 to 1000

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		140

Melting Completion (Liquidus), °C		900
Melting Completion (Liquidus), °C		1220

Melting Onset (Solidus), °C		890
Melting Onset (Solidus), °C		1020

Specific Heat Capacity, J/kg-K		380
Specific Heat Capacity, J/kg-K		240

Thermal Expansion, µm/m-K		21
Thermal Expansion, µm/m-K		14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		26
Electrical Conductivity: Equal Volume, % IACS		4.9 to 5.5

Electrical Conductivity: Equal Weight (Specific), % IACS		29
Electrical Conductivity: Equal Weight (Specific), % IACS		3.5 to 3.9

Otherwise Unclassified Properties

Density, g/cm³		8.0
Density, g/cm³		13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		76 to 140
Resilience: Ultimate (Unit Rupture Work), MJ/m³		13 to 100

Resilience: Unit (Modulus of Resilience), kJ/m³		120 to 500
Resilience: Unit (Modulus of Resilience), kJ/m³		1790 to 4660

Stiffness to Weight: Axial, points		7.2
Stiffness to Weight: Axial, points		4.7

Stiffness to Weight: Bending, points		20
Stiffness to Weight: Bending, points		12

Strength to Weight: Axial, points		14 to 17
Strength to Weight: Axial, points		18 to 27

Strength to Weight: Bending, points		15 to 17
Strength to Weight: Bending, points		15 to 20

Thermal Shock Resistance, points		13 to 16
Thermal Shock Resistance, points		41 to 61

Alloy Composition

Copper (Cu), %		59 to 62
Copper (Cu), %		13.5 to 14.5

Gold (Au), %		0
Gold (Au), %		9.5 to 10.5

Iron (Fe), %		0 to 0.1
Iron (Fe), %		0

Lead (Pb), %		0 to 0.2
Lead (Pb), %		0

Palladium (Pd), %		0
Palladium (Pd), %		34 to 36

Platinum (Pt), %		0
Platinum (Pt), %		9.5 to 10.5

Silver (Ag), %		0
Silver (Ag), %		29 to 31

Tin (Sn), %		0.5 to 1.0
Tin (Sn), %		0

Zinc (Zn), %		36.3 to 40.5
Zinc (Zn), %		0.8 to 1.2

Residuals, %		0
Residuals, %		0 to 0.3