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Monel 400 vs. PPA

Monel 400 and PPA belong to fundamentally different material chemistries. Monel 400 is a metal, while PPA is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 13 material properties with values for both materials. Properties with values for just one material (25, 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 Monel 400 and the bottom bar is PPA.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
2.1 to 2.2
Elongation at Break, % 20 to 40
30
Poisson's Ratio 0.32
0.4
Tensile Strength: Ultimate (UTS), MPa 540 to 780
57 to 69

Thermal Properties

Melting Onset (Solidus), °C 1300
310
Specific Heat Capacity, J/kg-K 430
1400
Thermal Conductivity, W/m-K 23
0.15

Otherwise Unclassified Properties

Density, g/cm3 8.9
1.1

Common Calculations

Stiffness to Weight: Axial, points 10
1.0 to 1.1
Stiffness to Weight: Bending, points 21
38
Strength to Weight: Axial, points 17 to 25
14 to 17
Strength to Weight: Bending, points 17 to 21
29 to 33
Thermal Diffusivity, mm2/s 6.1
0.095