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C72900 Copper-nickel vs. ASTM B540 Palladium

C72900 copper-nickel 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 (9, in this case) are not shown.

For each property being compared, the top bar is C72900 copper-nickel and the bottom bar is ASTM B540 palladium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 6.0 to 20
1.1 to 14
Poisson's Ratio 0.34
0.38
Shear Modulus, GPa 45
39
Shear Strength, MPa 540 to 630
500 to 700
Tensile Strength: Ultimate (UTS), MPa 870 to 1080
830 to 1240
Tensile Strength: Yield (Proof), MPa 700 to 920
620 to 1000

Thermal Properties

Latent Heat of Fusion, J/g 210
140
Melting Completion (Liquidus), °C 1120
1220
Melting Onset (Solidus), °C 950
1020
Specific Heat Capacity, J/kg-K 380
240
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
4.9 to 5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
3.5 to 3.9

Otherwise Unclassified Properties

Density, g/cm3 8.8
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 49 to 210
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 2030 to 3490
1790 to 4660
Stiffness to Weight: Axial, points 7.6
4.7
Stiffness to Weight: Bending, points 19
12
Strength to Weight: Axial, points 27 to 34
18 to 27
Strength to Weight: Bending, points 23 to 27
15 to 20
Thermal Shock Resistance, points 31 to 38
41 to 61

Alloy Composition

Copper (Cu), % 74.1 to 78
13.5 to 14.5
Gold (Au), % 0
9.5 to 10.5
Iron (Fe), % 0 to 0.5
0
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.3
0
Nickel (Ni), % 14.5 to 15.5
0
Niobium (Nb), % 0 to 0.1
0
Palladium (Pd), % 0
34 to 36
Platinum (Pt), % 0
9.5 to 10.5
Silver (Ag), % 0
29 to 31
Tin (Sn), % 7.5 to 8.5
0
Zinc (Zn), % 0 to 0.5
0.8 to 1.2
Residuals, % 0
0 to 0.3