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Hot Finished AISI 321 vs. UF

Hot finished AISI 321 and UF belong to fundamentally different material chemistries. Hot finished AISI 321 is a metal, while UF 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 (23, 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 hot finished AISI 321 and the bottom bar is UF.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
9.0
Elongation at Break, % 50
1.0
Tensile Strength: Ultimate (UTS), MPa 590
30

Thermal Properties

Specific Heat Capacity, J/kg-K 480
1200
Thermal Conductivity, W/m-K 16
0.4
Thermal Expansion, µm/m-K 17
55

Otherwise Unclassified Properties

Density, g/cm3 7.8
1.5

Common Calculations

Stiffness to Weight: Axial, points 14
3.3
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 21
5.6
Strength to Weight: Bending, points 20
14
Thermal Diffusivity, mm2/s 4.1
0.22
Thermal Shock Resistance, points 13
4.3