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C95200 Bronze vs. 85-platinum 15-iridium

C95200 bronze 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 (12, 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 C95200 bronze and the bottom bar is 85-platinum 15-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 29
5.5 to 34
Poisson's Ratio 0.34
0.38
Shear Modulus, GPa 42
81
Tensile Strength: Ultimate (UTS), MPa 520
560 to 730

Thermal Properties

Latent Heat of Fusion, J/g 230
110
Melting Completion (Liquidus), °C 1050
1820
Melting Onset (Solidus), °C 1040
1790
Specific Heat Capacity, J/kg-K 430
130
Thermal Expansion, µm/m-K 18
8.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.6

Otherwise Unclassified Properties

Density, g/cm3 8.3
22

Common Calculations

Stiffness to Weight: Axial, points 7.6
5.7
Stiffness to Weight: Bending, points 19
9.3
Strength to Weight: Axial, points 17
7.1 to 9.3
Strength to Weight: Bending, points 17
6.9 to 8.3
Thermal Shock Resistance, points 19
21 to 28

Alloy Composition

Aluminum (Al), % 8.5 to 9.5
0
Copper (Cu), % 86 to 89
0
Iridium (Ir), % 0
14.5 to 15.5
Iron (Fe), % 2.5 to 4.0
0
Platinum (Pt), % 0
84.3 to 85.5
Residuals, % 0
0 to 0.2