Acetal Homopolymer (POM-H)
POM-H is a thermoplastic, further classified as a polyoxymethylene plastic.
The properties of POM-H include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare POM-H to: polyoxymethylene plastics (top), all thermoplastics (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elongation at Break
7.0 to 55 %
Flexural Modulus
2.9 to 4.3 GPa 0.42 to 0.62 x 106 psi
Impact Strength: Notched Izod
40 to 75 J/m 0.75 to 1.4 ft-lb/in
Tensile Strength: Ultimate (UTS)
60 to 67 MPa 8.7 to 9.7 x 103 psi
Other Material Properties
Density
1.4 to 1.6 g/cm3 89 to 97 lb/ft3
Specific Heat Capacity
1250 to 1460 J/kg-K 0.3 to 0.35 BTU/lb-°F
Common Calculations
Strength to Weight: Axial
11 to 13 points
Strength to Weight: Bending
22 to 26 points
Followup Questions
Further Reading
Reinforced Plastics Durability, Geoffrey Pritchard (editor), 1999
SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000
Modern Plastics Handbook, Charles A. Harper (editor), 1999
Plastics Materials, 7th ed., J. A. Brydson, 1999
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015