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high temperature plastics for molding

Best High-Temperature Plastics for Injection Molding

Looking for top high-temperature plastics? Peek into the world of PEEK, PPA, and more to find the perfect match for your injection molding needs.

When looking for top high-temperature plastics for injection molding, PEEK, PPA, PAI, PPS, PEI, PC, PA 66, POM, and PTFE are top contenders. These materials offer superb performance in extreme heat environments, with unique qualities such as exceptional resistance, mechanical strength, and durability. Each plastic caters to specific needs like aerospace components, automotive applications, or demanding industrial sectors. By exploring the features of these high-temperature plastics, you can discover the ideal match for your injection molding projects.

PEEK (Polyetherketone)

When considering high-temperature plastics for injection molding, PEEK (Polyetherketone) stands out for its exceptional heat resistance properties. PEEK exhibits impressive thermal properties with a maximum Continuous Service Temperature (CST) of 260°C, making it a top choice for applications requiring resistance to high temperatures. With a melting temperature of 343°C, PEEK is well-suited for demanding environments like aerospace components, where extreme heat resistance is essential.

The high-temperature plastic's ability to maintain its structural integrity at elevated temperatures sets it apart in the domain of engineering plastics. PEEK finds extensive use in various industrial applications such as bearings, pumps, and compressor plate valves, where its heat resistance ensures long-term reliability. The material's exceptional strength and durability in high-temperature environments make it an ideal choice for critical components that are subjected to thermal stress.

To conclude, PEEK's impressive heat resistance and thermal properties make it a standout option for injection molding applications requiring resilience in extreme temperature conditions.

PPA (Amodel)

modeling a ppa agreement

PPA (Amodel), another high-temperature plastic resin renowned for its exceptional mechanical properties and chemical resistance, emerges as a remarkable alternative to PEEK in injection molding applications requiring robust performance under elevated temperatures. Known for its excellent dimensional stability and the ability to endure continuous operation at high temperatures, Amodel finds widespread use in industries such as automotive, aerospace, and industrial manufacturing due to its high strength and toughness.

With a heat deflection temperature (HDT) of approximately 260°C, Amodel proves itself suitable for demanding environments where other materials may falter. This high-temperature plastic resin comes in various grades tailored to meet specific performance requirements in injection molding applications, offering versatility and reliability in manufacturing processes.

For applications demanding exceptional mechanical strength and resistance to chemicals at elevated temperatures, PPA stands out as a top choice among high-temperature plastics for injection molding.

PAI (Torlon)

high performance thermoplastic bearing material

PAI, also known as Torlon, stands out as a high-performance thermoplastic with a remarkable ability to withstand temperatures up to 260°C. Torlon exhibits exceptional mechanical properties, including high strength and stiffness, making it ideal for demanding applications. This heat-resistant plastic is resistant to wear, creep, and chemicals, enhancing its longevity and reliability in harsh environments. Torlon is commonly used in aerospace, automotive, and industrial applications where high-temperature resistance is essential.

  • Outstanding Temperature Resistance: With a capability to withstand temperatures up to 260°C, Torlon is a top choice for high-temperature applications.
  • Exceptional Mechanical Properties: Torlon offers high strength and stiffness, ensuring reliable performance in demanding conditions.
  • Chemical and Wear Resistance: The material resists wear, creep, and chemicals, maintaining its integrity in harsh environments.
  • Wide Application Range: Torlon finds applications in aerospace, automotive, and industrial sectors where high-temperature performance is vital.

PPS (Ryton, Fortron)

thermoplastic materials for automotive

PPS, known by the brand names Ryton and Fortron, exhibits exceptional resistance to chemicals and high temperatures up to 220°C. Ryton and Fortron PPS are highly sought after in various industries such as electrical components, automotive parts, and industrial applications due to their outstanding properties. These include high mechanical strength, dimensional stability, and good creep resistance. Additionally, PPS is valued for its low moisture absorption and excellent thermal stability during injection molding processes.

Properties PPS (Ryton, Fortron)
Chemical Resistance Excellent
Temperature Resistance Up to 220°C
Mechanical Strength High
Dimensional Stability Good
Creep Resistance Excellent

When considering high-temperature plastics for injection molding, PPS stands out due to its impressive chemical resistance, high-temperature capabilities, and robust mechanical properties. The combination of Ryton and Fortron PPS makes them versatile materials suitable for challenging environments where durability and performance are essential.

PEI (Ultem)

high performance plastic material

PEI, also referred to as Ultem, boasts a remarkable Continuous Service Temperature (CST) of 170°C, positioning it as a top choice for high-temperature environments.

Its affordability relative to PEEK, combined with robust strength, ductility, and resistance to chemicals, makes Ultem a versatile option for various applications.

The thermal stability and excellent properties of Ultem render it a reliable selection for components requiring superior heat resistance and durability in challenging operational settings.

PEI Properties

With a maximum continuous service temperature (CST) of 170°C, PEI, also known as Ultem, offers a cost-effective alternative to PEEK, showcasing good strength, ductility, and chemical resistance. When considering PEI properties, it's essential to note the following:

  • PEI, or Ultem, is commonly used in medical components and thermostat housings.
  • This high-temperature plastic provides a balance of properties suitable for various engineering applications.
  • Ultem stands out for its affordability and versatility in high-temperature environments.
  • The material's chemical resistance and mechanical strength make it a preferred choice for demanding industrial settings.

Injection Molding Applications

PEI (Ultem) stands out in injection molding applications for its exceptional dimensional stability and high-temperature resistance up to 338°F. This high-performance plastic is commonly used in injection molding due to its excellent strength, stiffness, and flame resistance properties. It's a preferred choice for manufacturing precise and durable parts in industries such as aerospace and automotive where thermal and mechanical performance are vital.

When subjected to the injection molding process, PEI (Ultem) showcases its ability to retain intricate details and structural integrity, making it an ideal material for producing complex components with tight tolerances. Its reliability and resistance to high temperatures make it a standout option for various molding applications requiring robust plastic materials.

Thermal Stability Characteristics

In high-temperature applications, the thermal stability characteristics of Ultem make it a reliable choice due to its maximum continuous service temperature of 170°C. PEI (Ultem) exhibits excellent thermal properties, making it suitable for harsh environments.

Some key points to note about the thermal properties of Ultem include:

  • High maximum continuous service temperature of 170°C
  • Melting point of 217-220°C
  • Good strength, ductility, and chemical resistance
  • Affordable compared to other high-temperature plastics like PEEK

These properties contribute to Ultem's popularity in various industrial applications such as medical components, thermostat housings, and electrical insulators.

PC (Polycarbonate)

material for protective gear

Polycarbonate (PC) stands out as a high-temperature plastic with a maximum continuous service temperature of 140°C, making it a versatile choice for various industries. Known for its exceptional thermal stability, PC is a preferred material in injection molding processes where high temperatures are involved. Its ability to withstand heat without significant deformation makes it an ideal choice for manufacturing transparent parts that require good impact resistance.

Industries such as electronics, automotive, and aerospace benefit from the unique properties of PC, utilizing it in applications ranging from electronic housings to headlamp lenses. The balance of properties offered by polycarbonate, including heat resistance, impact strength, and optical clarity, makes it a reliable option for high-temperature environments.

When considering materials for injection molding at elevated temperatures, PC emerges as a top contender due to its ability to maintain structural integrity and functionality under demanding thermal conditions.

PA 66 (Nylon 66)

polyamide 66 compound material

PA 66, or Nylon 66, boasts notable heat resistance properties important for high-temperature applications. Its compatibility with the injection molding process makes it a preferred choice for manufacturing intricate components.

Understanding the applications and benefits of PA 66 is essential for leveraging its mechanical strength and cost-effectiveness in various industries.

Heat Resistance Properties

With its exceptional heat resistance properties, Nylon 66 (PA 66) can withstand temperatures up to 140°C, making it a highly suitable material for a wide range of industrial applications. When considering heat-resistant plastics for high-temperature environments and injection molding processes, PA 66 stands out for its reliability and performance.

  • PA 66 offers excellent resistance to high temperatures, ensuring stability during demanding industrial operations.
  • The material's ability to maintain its mechanical strength at elevated temperatures makes it a preferred choice for many applications.
  • Glass-filled PA 66 further enhances heat resistance, providing durability in challenging environments.
  • Widely used in automotive applications, PA 66's heat resistance contributes to the longevity and reliability of parts.

Molding Process Compatibility

Nylon 66 (PA 66) demonstrates exceptional compatibility with molding processes, making it a preferred choice for various industrial applications requiring high-temperature plastics. Its high melting point of up to 140°C allows for use in environments with elevated temperatures.

During the injection molding process, PA 66 can be efficiently melted and injected into molds due to its excellent flow properties. The material's ability to solidify quickly aids in reducing cycle times, enhancing productivity.

Additionally, PA 66 accommodates the design of intricate parts by utilizing cooling channels effectively to regulate temperature and guarantee uniform solidification. These characteristics highlight PA 66 (Nylon 66) as a reliable and efficient option for high-temperature plastic injection molding applications.

Applications and Benefits

High-temperature plastic Nylon 66 stands out as a versatile material widely favored in injection molding applications for its exceptional mechanical strength and rigidity. PA 66 (Nylon 66) is ideal for automotive parts due to its excellent mechanical strength. With a maximum continuous service temperature of 140°C, Nylon 66 is suitable for demanding environments. This high-temperature plastic is known for its abrasion resistance and durability in various industrial settings. Commonly used for gears, fasteners, and electronic components, PA 66 offers a cost-effective solution without compromising on performance.

  • Versatile material for injection molding applications
  • Excellent mechanical strength and rigidity
  • Suitable for demanding environments with a max temp of 140°C
  • Cost-effective solution for gears, fasteners, and electronic components

POM (Acetal)

polyoxymethylene plastic material

POM (Acetal) demonstrates exceptional stiffness and low friction properties, making it a preferred material for manufacturing gears and fasteners in various industries. With a maximum continuous service temperature of 105°C, POM is a versatile option for applications requiring a balance of toughness, chemical resistance, and dimensional stability. Its good stiffness and low friction make it ideal for parts where these properties are essential. The table below highlights some key characteristics of POM:

Property Description
Temperature Resistance 105°C maximum continuous service temperature
Mechanical Strength Excellent for various industrial applications
Versatility Widely used in automotive and electronics parts
Affordability Cost-effective choice for many applications

POM's ability to offer excellent mechanical strength, rigidity, and affordability makes it a go-to choice for numerous manufacturing processes, especially in industries where these properties are highly valued.

PTFE (Polytetrafluoroethylene)

non stick heat resistant chemical resistant material

PTFE (Polytetrafluoroethylene) exhibits exceptional flexural strength, making it a preferred choice for a wide range of engineering applications. This high-performance plastic offers distinctive advantages, including:

  • High Melting Point: PTFE boasts a high melting point of 327 degrees Celsius, enabling it to endure extreme temperatures without compromising its structural integrity.
  • Excellent Insulation Properties: Its exceptional insulating properties make PTFE an ideal material for a variety of electrical components, ensuring safety and reliability in electronic applications.
  • Chemical Resistance: PTFE is chemically resistant, providing durability in harsh environments where exposure to corrosive substances is a concern.
  • Diverse Applications: Widely used in industries such as automotive and aerospace, PTFE is commonly employed in seals, gaskets, and various components where its unique properties are highly valued.

PTFE's remarkable attributes make it a versatile and reliable choice for applications that demand high performance in challenging conditions.

Frequently Asked Questions

What Plastic Is Used in High Temperature Injection Molding?

When engaging in high-temperature injection molding, plastics like PEEK, PPS, PEI, and PAI are commonly utilized due to their impressive heat resistance properties. These materials boast melting points ranging from 140°C to 343°C, making them ideal for applications requiring resilience against elevated temperatures.

Industries such as aerospace, automotive, electronics, and medical frequently employ these high-temperature plastics for their exceptional chemical resistance, mechanical strength, and dimensional stability.

What Is the Best High Temperature Plastic?

When deciding on the best high-temperature plastic, consider factors like maximum continuous service temperature (CST), strength, and chemical resistance.

PEEK is excellent, with a CST of 260°C, great for aerospace.

ULTEMⓇ offers a lower CST at 170°C but is an affordable alternative with good strength.

PPS is durable with a CST of 220°C, perfect for outdoor use.

PA 66 is strong with a CST of 140°C, commonly used in automotive parts.

POM is stiff and friction-resistant with a CST of 105°C, ideal for gears.

What Plastic Can Withstand 100 Degrees?

If you need a plastic that can handle temperatures up to 100°C, Noryl is a suitable choice. This heat-resistant material offers durability and stability for various applications.

Commonly used in electrical components, automotive parts, and industrial settings, Noryl provides a cost-effective option for projects not requiring extreme heat resistance.

It's a reliable option for moderate heat resistance needs.

What Type of Plastic Will You Use for High Temperature Application?

For high-temperature applications, you should consider plastics like PEEK, PEI, PA, PTFE, or PBI. Each offers specific benefits based on temperature requirements and performance needs.

PEEK excels at 260°C, PEI at 170°C, PA at 140°C, PTFE at 327°C, and PBI for specialized high-temperature demands.

Select the plastic that aligns best with your application's temperature range and performance criteria to guarantee the best results.


In the world of high-temperature plastics for injection molding, these materials are the unsung heroes, quietly providing structural integrity and heat resistance like a silent guardian.

From the versatile PEEK to the durable PAI, each plastic has its own unique strengths and capabilities, like a team of specialized agents working together to create exceptional products.

So next time you're in need of high-temperature plastics, remember to choose wisely and harness the power of these remarkable materials.

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