MakeItFrom.com
Menu (ESC)

ASTM B631 Class A vs. 85-platinum 15-iridium

Both ASTM B631 class A and 85-platinum 15-iridium are otherwise unclassified metals. There are 12 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class A and the bottom bar is 85-platinum 15-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Poisson's Ratio 0.3
0.38
Shear Modulus, GPa 85 to 86
81

Thermal Properties

Latent Heat of Fusion, J/g 160
110
Melting Completion (Liquidus), °C 2680 to 2690
1820
Specific Heat Capacity, J/kg-K 160
130
Thermal Expansion, µm/m-K 11
8.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
2.6

Otherwise Unclassified Properties

Density, g/cm3 15
22

Common Calculations

Stiffness to Weight: Axial, points 8.5
5.7
Stiffness to Weight: Bending, points 14
9.3