Polypropylene CNC Machining

Polypropylene CNC Machining

Offering top-of-the-line Polypropylene CNC Machining services with fast turnaround times.

Whether you need quick-turn prototypes or high-volume Polypropylene machined parts, we've got you covered. ISO 9001:2015, ISO 13485, and AS9100D certified.

Polypropylene CNC Machining

Polypropylene (PP), available as both a Copolymer and Homopolymer, is a thermoplastic widely utilized for mechanical components in corrosive environments. Homopolymer polypropylene represents the standard grade, while copolymer polypropylene incorporates different levels of ethylene. Machining polypropylene can pose challenges, given its tendency to gall and melt, distinguishing it from more common plastics. The exceptional chemical resistance and fatigue strength of polypropylene render it particularly valuable for crafting flexible components and those exposed to corrosive surroundings.

Due to its low annealing temperature, machining can be challenging, demanding expertise from a proficient CNC machining partner for optimal results.

Why Choose Dadesin for PP CNC Machining Services

Strict Quality Management

Our inspection instruments include German Zeiss CMM, Wanhao image measuring instrument, Hitachi handheld spectrometer, Mitutoyo roughness measuring instrument, etc.

Our Certification

Dadesin was full certificated by ISO9001:2015, IATF16949:2016.

fast Delivery

Dadesin has 200+ sets of high precision CNC machining and CNC milling centers and we can take your project from engineering design to delivery faster than our competitors.

Quality Assurance

Full inspection service for all projects.

Polypropylene Material Properties

Polypropylene (PP) is an economical material with a unique blend of exceptional physical, chemical, mechanical, thermal, and electrical properties, setting it apart from other thermoplastics. In comparison to both low and high-density polyethylene, polypropylene exhibits lower impact strength, a superior working temperature range, and higher tensile strength. This makes it a versatile choice for various applications, offering a cost-effective solution with a favorable combination of desirable attributes.. Here are key material properties of Polypropylene:


Polypropylene Properties

Tensile Strength, Yield Elongation at Break (%) Hardness Heat Deflection Temperature (°C) Glass Transition Temperature (°C)
19-45 MPa 8-750% Rockwell 49-81 60-129 130-174

Polypropylene At a Glance

Application CNC machining produces parts with excellent mechanical properties, accuracy and repeatability from metal and plastic. 3-axis & 5-axis CNC milling available.
Advantages High compressive strength, Excellent dielectric properties and Easily fabricated.
Weaknesses Greater geometry restrictions than 3D printing
Lead Time Typically, it takes a minimum of 3 days to produce PP parts, and this duration may extend for complex or internationally sourced components.
Price $$$$$
Tolerances It is determined by the desired effect and the Polypropylene type used. A tolerance of ±0.010” (±0.25 mm) is available at Dadesin.
Wall Thickness The minimum wall thickness for Polypropylene parts is approximately 0.80 mm (about 0.03 inches). This value might vary based on the ratio of wall thickness to planar dimension.
Max part size 200 x 80 x 100 cm(the available size is mostly decided by the machine and part geometry).

Custom Polypropylene Parts

Communication equipment housing

Communication equipment housing

Aluminum housing

Aluminum housing

CNC aluminum housing

CNC aluminum housing

Vehicle part

Vehicle part

Aluminum alloy motor housing cover

Aluminum alloy motor housing cover


Applications Of Polypropylene Machined Parts

Polypropylene material is widely used in the production of medical devices, automobiles, bicycles, parts, conveying pipes, chemical containers, etc. It is also used for food, drugs and garments.

Automotive Parts: Polypropylene is extensively used in the automotive industry, including for bumpers, interior trim, door panels, dashboard components, battery cases, and engine covers due to its lightweight, impact resistance, and ease of molding.

Medical Devices: Many disposable medical devices, such as specimen containers, surgical trays, and diagnostic tools, are made from polypropylene. Its disposability, combined with its resistance to sterilization processes, makes it suitable for single-use medical applications.

Electrical and Electronic Components: Polypropylene's remarkable electrical insulation properties make it a preferred material for the manufacturing of various electrical and electronic components, including Cable Insulation and Electronic Housings.

Request a Free CNC Machining Quote Now

Our in-house equipment includes 5-axis mills with edge finding equipment, ZEISS CMMs, Olympus XRF analyzers, and a range of cutting tools for efficient chip removal. We can guarantee the nylon material will be the exact material that you need for your project and can ensure the right tolerances according to your needs. Take our services out for a test drive: send us your CAD files to see our fair pricing rate and fast speeds for yourself.

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CNC Machining

Polypropylene CNC Machining FAQs

  • Can Polypropylene be CNC machined?

    Yes, Polypropylene can be CNC machined. However, its low annealing temperature makes machining challenging, requiring skill and expertise.

  • What are the advantages of Polypropylene?

    Polypropylene offers advantages such as chemical resistance, fatigue strength, low cost, and excellent electrical properties. It is commonly used in various industries for its versatility.

  • Is polypropylene a medical-grade material?

    Yes, Polypropylene is a budget-friendly medical-grade plastic. Widely chosen for steam-sterilized medical gear, its rising popularity in the medical sector is due to efficient sterilization and transparency. Withstanding high temperatures, cleaning agents, and disinfectants, along with its cost-effectiveness, assures its continued application in healthcare for years.

  • Is polypropylene a strong material?

    Yes, Polypropylene (PP) exhibits impressive strength despite its lightweight nature, making it capable of withstanding substantial loads and providing good fatigue strength. Moreover, its resistance to a wide range of solvents and chemicals enhances its suitability for crafting laboratory equipment and versatile containers for various applications.

  • What are the challenges in machining Polypropylene?

    Polypropylene tends to gall and melt during machining, presenting challenges. Skilled CNC machinists are essential for overcoming these challenges.

  • What industries use CNC-machined Polypropylene parts?

    Industries such as electronics, automotive, healthcare, and consumer goods use CNC-machined Polypropylene parts for various applications.


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