Polypropylene/PP Machining Guide | Machining Design Considerations | Penta Precision

sales@pentaprecision.co.uk       +44 (0) 2392 668 334

Polypropylene (PP) Machined Parts

A Guide to Polypropylene CNC Milled & Turned Parts: Properties, Applications and Design Considerations

What is Polypropylene?

Polypropylene (PP) also known as polypropene is a hydrocarbon polymer and is one of the most commonly produced plastics in the world.

It is sometimes referred to as the ‘steel of the plastic industry’ due to its adaptability.

PP is a thermoplastic that is available as a Copolymer and Homopolymer. It is commonly used for mechanical components in corrosive environments.

Main Attributes of Polypropylene:

  • Good-Excellent chemical resistance
  • Semi rigid
  • Good fatigue resistance
  • Integral hinge property
  • Good heat resistance
  • High flammability
  • Excellent electrical resistance
  • Low density
  • Lightweight
  • High purity
  • Low moisture absorption
  • High thermal expansion
  • Food compliant
  • Excellent weldability
  • Stain resistant
  • Low thermal and mechanical properties in comparison to engineering plastics
  • Poor UV resistance
  • More readily available alternative to ABS
  • Low cost
  • Recyclable


Simply complete our short form to receive your quotation.

Detailed information about Polypropylene for designers including UK stock sizes and technical properties can be found in the tabs below. Please note: this information is provided as a guide only. All information is based on our present knowledge and is given in good faith. No liability will be accepted by Penta Precision in respect of any action taken by any third party in reliance thereon.

Similar or obsolete designation and trade names

You may also see Polypropylene referred to as:

Polypropylene Components, Applications & Industries

Here are some examples of the industries and components for which Polypropylene is appropriate. This is by no means an exhaustive list. Please do get in touch if you are considering using Polypropylene and we can talk through your project with you.

Typical Components & Applications:
  • Valves
  • Galvanizing apparatus
  • Filter components
  • Bearings
  • Packaging
  • Housings
  • Flanges
  • Living hinges
  • Wear pads
  • Machine cases
  • Seals
  • Pump components
  • Gears
  • Vacuum systems
  • Chemical processing & storage applications
  • Orthotic & prosthetic devices
  • Plenums & manifolds
  • Household appliances
Industry Examples:
  • Medical
  • Pharmaceutical
  • Chemical
  • Food processing
  • Packaging
  • Automotive


    Polypropylene Machined Part

    Polypropylene CNC Milled Scientific Part

    Polypropylene Machining Service

    Penta Precision provides highly accurate machined parts in Polypropylene. Customers turn to us when they have had quality and delivery issues with their existing suppliers and need a reliable precision machining partner.

    Penta Precision provides the following Polypropylene services: 

    • CNC milling – prototypes & large batch runs
    • CNC turning – prototypes & large batch runs
    • Insert installation
    • Part marking
    • Manual milling
    • Manual turning
    • Machining design advice
    • Machining drawing service

    Reasons to Choose Penta:

    • ISO 9001:2015 quality assurance
    • Consistent high quality machined parts
    • Reliable delivery dates - our track record speaks volumes
    • Exceptional customer service and communication
    • Machining design advice
    • Extensive experience in our field
    What Makes Penta Different?

    Our 3 unique pillars to delivering exemplary service:

    • We Communicate well 
    • We take Care at each stage
    • Our service is Consistent

    See our ‘Proven Process’ page to find out more

    We are regularly machining Polypropylene for customers all over the UK. Our customers depend on our machining expertise as well as our outstanding delivery performance, to machine the highest quality parts. Contact us to discuss how we can help you with your Polypropylene machining requirements. 

    Can we meet your
    Polypropylene machining needs?
    Call our engineering team on
    +44 (0) 23 9266 8334
    or contact us via our email form

    "Very attentive and efficient company to deal with." Grant Greenham - Production Engineer

    Tel: +44 (0) 2392 668 334

    Fax: +44 (0) 2392 668 335

    Connect with us:

    Penta Precision Engineering Ltd

    Aspen House

    Airport Service Road



    PO3 5RA

    subfooter map