Heat-Resistant Engineering Plastic
When a part must hold its strength and dimensions above 150 °C, standard engineering plastics run out of headroom. High-heat sourcing is really about building a heat ladder: match the grade to your continuous service temperature, mechanical load and compliance needs ― and confirm the HDT was measured at the test load that resembles your application.
What to Check Before Sourcing High-Heat Resin
- HDT at 1.8 MPa vs. 0.45 MPa ― always compare at the same test condition.
- Continuous-use temperature, not just peak or short-term tolerance.
- Whether flame retardancy is also required (heat + fire gates often come together).
- Glass-fiber content: reinforcement lifts both stiffness and HDT.
- Cost ladder: reinforced nylon → reinforced PET → PEEK, with price rising steeply at the top.
Selection Logic in 30 Seconds
– 150‒220 °C continuous → glass-reinforced nylon (PA6/PA66 GF) or reinforced PET.
– Heat + flame together → FR reinforced PET (V-0 with high HDT).
– Above ~220 °C continuous or extreme chemical exposure → PEEK.
– Electrical insulation at temperature → FR reinforced PA66 or PEEK depending on temperature.
FAQ
Q1: What is the practical continuous-use limit of PEEK?
A1: PEEK serves demanding high-temperature applications ― full data and molding parameters are in our VICTREX 450G guide (news section).
Q2: Do GF grades hold HDT in thin walls?
A2: HDT is measured at standard specimen thickness; very thin walls run hotter ― confirm your wall thickness with our engineers.
Q3: Grade not listed below?
A3: Our high-heat range is updated continuously ― send temperature, load and standard.
Heat-Resistant Engineering Plastic
| Brand | Grade | Applications |
|---|---|---|
| Victrex | 450G PEEK | High-performance injection-molded parts for high-temperature and aggressive chemical service (see our 450G guide) |
| Celanese | FR530 BK507 PET | Electrical/electronic structural parts, automotive components (HDT 220 °C, V-0/5VA) |
| BASF | B3WG10 BK00564 PA6 | Automotive powertrain and high-temperature high-stiffness structural parts (50% glass, HDT 215 °C) |
| BASF | A3UG5 PA66 | Electrical heat-resistant structural parts (25% glass-filled FR PA66) |
Finding the right polymer or plastic resin supplier?
Looking for plastic polymer or plastic resin from top polymer companies? As a reliable distributor, we offer a wide range of branded polymer to meet your needs. Share your requirements (material type, brand, quantity, packaging), and we’ll provide a fast, competitive quote.