C51000 Bronze vs. 60Pd-40Ag Alloy

C51000 bronze belongs to the copper alloys classification, while 60Pd-40Ag alloy belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C51000 bronze and the bottom bar is 60Pd-40Ag alloy.

UNS C51000 (CW451K) Phosphor Bronze 60-Palladium 40-Silver Electrical Contact Alloy

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		2.7 to 64
Elongation at Break, %		1.1 to 28

Poisson's Ratio		0.34
Poisson's Ratio		0.38

Shear Modulus, GPa		42
Shear Modulus, GPa		37

Shear Strength, MPa		250 to 460
Shear Strength, MPa		220 to 350

Tensile Strength: Ultimate (UTS), MPa		330 to 780
Tensile Strength: Ultimate (UTS), MPa		340 to 720

Thermal Properties

Latent Heat of Fusion, J/g		200
Latent Heat of Fusion, J/g		140

Melting Completion (Liquidus), °C		1050
Melting Completion (Liquidus), °C		1360

Melting Onset (Solidus), °C		960
Melting Onset (Solidus), °C		1310

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

Thermal Conductivity, W/m-K		77
Thermal Conductivity, W/m-K		29

Thermal Expansion, µm/m-K		18
Thermal Expansion, µm/m-K		15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		18
Electrical Conductivity: Equal Volume, % IACS		4.1

Electrical Conductivity: Equal Weight (Specific), % IACS		18
Electrical Conductivity: Equal Weight (Specific), % IACS		3.2

Otherwise Unclassified Properties

Density, g/cm³		8.8
Density, g/cm³		11

Common Calculations

Stiffness to Weight: Axial, points		7.0
Stiffness to Weight: Axial, points		4.9

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		14

Strength to Weight: Axial, points		10 to 25
Strength to Weight: Axial, points		8.4 to 18

Strength to Weight: Bending, points		12 to 21
Strength to Weight: Bending, points		9.6 to 16

Thermal Diffusivity, mm²/s		23
Thermal Diffusivity, mm²/s		11

Thermal Shock Resistance, points		12 to 28
Thermal Shock Resistance, points		16 to 34

Alloy Composition

Copper (Cu), %		92.9 to 95.5
Copper (Cu), %		0 to 0.1

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

Lead (Pb), %		0 to 0.050
Lead (Pb), %		0

Palladium (Pd), %		0
Palladium (Pd), %		59.5 to 60.9

Phosphorus (P), %		0.030 to 0.35
Phosphorus (P), %		0

Silver (Ag), %		0
Silver (Ag), %		39.1 to 40.5

Tin (Sn), %		4.5 to 5.8
Tin (Sn), %		0

Zinc (Zn), %		0 to 0.3
Zinc (Zn), %		0

Residuals, %		0
Residuals, %		0 to 0.3