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ETFE vs. Grade 350 Maraging Steel

ETFE and grade 350 maraging steel belong to fundamentally different material chemistries. ETFE is a polymeric material, while grade 350 maraging steel is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 12 material properties with values for both materials. Properties with values for just one material (28, 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 ETFE and the bottom bar is grade 350 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.5
190
Elongation at Break, % 230
4.1 to 18
Tensile Strength: Ultimate (UTS), MPa 46
1140 to 2420

Thermal Properties

Melting Onset (Solidus), °C 260
1420
Specific Heat Capacity, J/kg-K 1000
450
Thermal Expansion, µm/m-K 95
12

Otherwise Unclassified Properties

Density, g/cm3 1.8
8.2

Common Calculations

Stiffness to Weight: Axial, points 0.48
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 7.3
38 to 82
Strength to Weight: Bending, points 16
29 to 49
Thermal Shock Resistance, points 23
35 to 74