| Chemistry name: | polyacetal |
| Properties: | |
| D 1.425, thermal conductivity 0.13 Btu ft/(hr)(sq ft)(degree F), coefficient of thermal expansion 4.5 × 10−5/degree F, specific heat 0.35 Btu/(lb)(degree F), water absorption 0.41%/24 hour, tensile strength 10,000 psi, elongation 15%, hardness (Rockwell) R120, impact strength (notched) 1.4 ft-lb/inch, flexural strength 14,100 psi, shear strength 9500 psi. Combustible, but slow burning. | |
| Use: | |
| An engineering plastic, often used as substitute for metals, as in oil and gas pipes; automotive and appliance parts; industrial parts; hardware; communication equipment; aerosol containers for cosmetics. | |