Advantages
Resistance to creep and fatigue
Rigidity and resilience
Resistance to solvents
Limitations
High specific gravity
Anisotropic shrinkage
Processing difficulties
Acetals are rigid, creep resistant and strong. They possess low coefficients of friction. They remain stable in high temperature service and offer exceptional resistance to hot water environments.
They are virtually unaffected by strong bases but are attacked by strong mineral acids.
A 40% glass reinforced acetal has a flexural modulus of 1.6 psi x 10E-6 (11024 MPa) and 330 degrees F (166 degrees C) heat deflection temperature.