Polypropylene Plastic Extrusions

Material Update:
The global availability of Polypropylene is currently limited due to damaged production resources in the supply chain. Because we work with multiple suppliers as a normal business practice, we have numerous options that can be a great (or sometimes superior) substitute. We’re happy to walk you through the possibilities! Call us today to discuss your needs & let us find a material solution for you.

Polypropylene Plastic Extrusions

What is Polypropylene?

Polypropylene (PP) is a versatile thermoplastic polymer that is often the chosen material for plastic extrusions due to its low cost, heat resistance, flexibility, customizability and strength. Available as a natural colored, colorable compound.

Polypropylene (PP) #5 Plastic Extrusions

PP (Polypropylene) #5 is a widely used polyolefin, resistant to cracking, acids and organic solvents, with good dielectric properties.

Polypropylene Properties

  • Increased toughness over Polyethylene (PE) #4
  • Max temperature: 180 - 240 °F (PP #5 doesn’t melt until about 320 °F.)
  • Offers excellent electrical and heat resistance

The two main grades of polypropylene used for plastic extrusions are homo-polymer and co-polymer. Polypropylene co-polymers are slightly softer than homo-polymers, but still tend to be more durable. Fillers boost stiffness to be competitive with other polymeric materials, extending use and versatility.

  • Homo-polymer strong stiff plastic that can be welded and offers excellent fatigue resistance
  • Co-polymer — tends to be more durable offering better impact and stress resistance (more suitable for uses at lower temperatures)

Advantages of Polypropylene

  • Low Cost of Extrusion (relatively inexpensive material)
  • High Flexural Strength (due to its semi-crystalline nature)
  • Low Coefficient of Thermal Expansion 

Polypropylene Extrusions

Common uses include luggage, microwavable food containers, cutting boards, window components, fodder systems and medical applications.

Rockwell Hardness 80R scaleD-785
Specific Gravity 0.90D-782
Melt Flow Rate (230°C, 2.16 kg) 0.45g/10 minD-1238
Flexural Modulus 162,000psiD-790 A
Tensile Strength @ Yield 4,060psiD-638
Tensile Elongation @ Yield 11%D-638
Notched Izod Impact @ 23°C No breakft-lb/inD-256
Heat Deflection Temp: 0.125 @ 66 psi 190°FD-648
Heat Deflection Temp: 0.125 @ 264 psi 124°FD-648
Coefficient of Linear Thermal Expansion 6.6 x 10^-5in/in/°FD-696
Flame Rating - UL at 0.0394" HBUL94

The information provided above is based on typical values, and is believed to be reliable. No warranty is given as to the suitability of the product for a particular application. Determination of the suitability of this product for any use is solely the responsibility of the user.