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C61300 Bronze vs. 90-platinum 10-iridium

C61300 bronze belongs to the copper alloys classification, while 90-platinum 10-iridium belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (14, 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 C61300 bronze and the bottom bar is 90-platinum 10-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 34 to 40
5.5 to 34
Poisson's Ratio 0.34
0.38
Shear Modulus, GPa 43
74
Shear Strength, MPa 370 to 390
220 to 320
Tensile Strength: Ultimate (UTS), MPa 550 to 580
330 to 550

Thermal Properties

Latent Heat of Fusion, J/g 220
100
Specific Heat Capacity, J/kg-K 420
130
Thermal Expansion, µm/m-K 18
8.6

Otherwise Unclassified Properties

Density, g/cm3 8.5
22

Common Calculations

Stiffness to Weight: Axial, points 7.5
5.3
Stiffness to Weight: Bending, points 19
9.1
Strength to Weight: Axial, points 18 to 19
4.2 to 7.1
Strength to Weight: Bending, points 18
4.9 to 6.9
Thermal Shock Resistance, points 19 to 20
13 to 22

Alloy Composition

Aluminum (Al), % 6.0 to 7.5
0
Copper (Cu), % 88 to 91.8
0
Iridium (Ir), % 0
9.5 to 10.5
Iron (Fe), % 2.0 to 3.0
0
Lead (Pb), % 0 to 0.010
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.015
0
Platinum (Pt), % 0
89.3 to 90.5
Silicon (Si), % 0 to 0.1
0
Tin (Sn), % 0.2 to 0.5
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0
0 to 0.2