PP (Polypropylene)

Polypropylene is a widely used, semi-crystalline material. It has been extensively compounded to provide a wide range of properties at a wide range of costs. In general, polypropylene is a low temperature material with excellent chemical resistance. It has no known solvent at 73 F. Polypropylene is difficult to mold to extremely close tolerances.

Applications: Packaging, industrial components for fluid processing, household goods, automotive and electrical hardware.

Brand Names: Adell, Borealis, Celstran, Certene.

Tensile Strength Flexural Modulus Impact Strength Max Temp. Chemical Resistance
4,500-18,500 psi 210,000 -1,500,000 psi 1.4-5.5 ft-lb/in notched izod 150°-300° F Excellent

Advantages

  • Excellent moisture resistance

  • Food grades available

  • Mold–in hinge possible

  • Good impact strength

Disadvantages

  • Degraded by UV

  • Flammable (retarded grades available)

  • Attacked by chlorinated solvents

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