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C97800 Nickel Silver vs. 85-platinum 15-iridium

C97800 nickel silver belongs to the copper alloys classification, while 85-platinum 15-iridium belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is C97800 nickel silver and the bottom bar is 85-platinum 15-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
220
Elongation at Break, % 10
5.5 to 34
Poisson's Ratio 0.33
0.38
Shear Modulus, GPa 48
81
Tensile Strength: Ultimate (UTS), MPa 370
560 to 730

Thermal Properties

Latent Heat of Fusion, J/g 220
110
Melting Completion (Liquidus), °C 1180
1820
Melting Onset (Solidus), °C 1140
1790
Specific Heat Capacity, J/kg-K 390
130
Thermal Expansion, µm/m-K 16
8.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.0
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 4.1
2.6

Otherwise Unclassified Properties

Density, g/cm3 8.8
22

Common Calculations

Stiffness to Weight: Axial, points 8.1
5.7
Stiffness to Weight: Bending, points 19
9.3
Strength to Weight: Axial, points 12
7.1 to 9.3
Strength to Weight: Bending, points 13
6.9 to 8.3
Thermal Shock Resistance, points 13
21 to 28

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Copper (Cu), % 64 to 67
0
Iridium (Ir), % 0
14.5 to 15.5
Iron (Fe), % 0 to 1.5
0
Lead (Pb), % 1.0 to 2.5
0
Nickel (Ni), % 24 to 27
0
Phosphorus (P), % 0 to 0.050
0
Platinum (Pt), % 0
84.3 to 85.5
Silicon (Si), % 0 to 0.15
0
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 4.0 to 5.5
0
Zinc (Zn), % 1.0 to 4.0
0
Residuals, % 0
0 to 0.2