PEEK: The High-Performance Plastic for Demanding Applications


PEEK (Polyether Ether Ketone) is a high-performance thermoplastic known for its exceptional mechanical, thermal, and chemical resistance properties. Widely used in aerospace, medical, and automotive industries, PEEK offers durability and reliability in extreme conditions. This article explores its types, features, applications, and how to source it effectively from China.


How to Find Reliable PEEK from China in 2025


Sourcing PEEK from China requires careful evaluation of suppliers. Look for manufacturers with ISO certifications, proven track records, and positive customer reviews. Platforms like Alibaba can help identify reputable suppliers. Always request samples and verify material specifications before placing bulk orders.


What Buyers Should Know Before Buying PEEK from China


Before purchasing PEEK, ensure the supplier provides detailed technical data sheets (TDS) and material certifications. Check for compliance with international standards like ASTM or ISO. Negotiate pricing and lead times, and confirm shipping and payment terms to avoid surprises.


Types of PEEK


PEEK comes in various forms, including:

  • Virgin PEEK: Unfilled, pure polymer with high mechanical strength.
  • Glass-Filled PEEK: Enhanced stiffness and dimensional stability.
  • Carbon-Filled PEEK: Improved wear resistance and thermal conductivity.
  • PEEK Films and Sheets: Used for insulation and protective layers.

Functions and Features of PEEK


PEEK excels in:

  • High-temperature resistance (up to 250°C).
  • Excellent chemical resistance to acids, bases, and solvents.
  • Outstanding mechanical strength and fatigue resistance.
  • Biocompatibility, making it suitable for medical implants.

Scenarios of PEEK


PEEK is used in:

  • Aerospace: Components for engines and airframes.
  • Medical: Surgical instruments and implants.
  • Automotive: High-temperature under-the-hood parts.
  • Electronics: Insulating materials for connectors.

How to Choose PEEK


Selecting the right PEEK depends on:

  • Application requirements (temperature, load, environment).
  • Material grade (virgin, filled, or modified).
  • Cost considerations and supplier reliability.

PEEK Q & A


Q: Is PEEK recyclable?
A: Yes, PEEK can be recycled, but the process is complex due to its high melting point.


Q: What is the price range of PEEK?
A: Prices vary based on grade and quantity, typically ranging from $100 to $500 per kilogram.


Q: Can PEEK replace metal in applications?
A: Yes, PEEK often replaces metal in lightweight and corrosion-resistant applications.


Q: How does PEEK compare to other high-performance plastics?
A: PEEK offers superior thermal and chemical resistance compared to most plastics like PTFE or PPS.


Q: What are the limitations of PEEK?
A: High cost and limited color options are the main drawbacks.