Torlon® - polyamide-imide (PAI)

Torlon® is a high-performance polymer that can be used at extreme temperatures and under high mechanical stress without any problems!

Torlon® is an amorphous, thermoplastically processable polyimide which, in contrast to polyether-imide, obtains its thermoplastic properties through the incorporation of aromatic amide groups.

Made from the original raw material of the company SOLVAY Plastics Despite its amorphous structure, Torlon® is not transparent and is only supplied coloured. It is an extremely strong, rigid and, above all, wear-resistant plastic with a wide operating temperature range from minus 200°C to plus 260°C.

In contrast to other high-performance thermoplastics, which become brittle in the cold and whose strength values drop significantly with increasing temperature, Torlon® largely retains its mechanical strength values over the entire application temperature range and does not melt even after reaching the glass transition temperature.

In addition, Torlon® has very low thermal expansion and, especially with the fibre-reinforced grades, allows extremely dimensionally stable components.

• Heat distortion temperature 280°C
• Extreme wear resistance
• Excellent mechanical strength.

To ensure excellent mechanical and chemical properties, the finished product must be subjected to a precise temperature cycle, known as postcuring, which depends on the geometry and wall thickness of the components. This measure is essential for the proper use of Torlon® and should only be carried out by specialised companies.

Torlon® is available in various reinforced and tribologically optimised versions.

High-strength Torlon® grades

• Torlon® 4203 (PAI) is the unreinforced standard grade. It is extremely strong and has the highest impact strength of all Torlon® grades. The material also has low thermal expansion and excellent insulating properties. Data sheet 
   
• Torlon® 5030 (PAI GF30) is a PAI reinforced with 30% glass fibre. The material offers high rigidity and good mechanical strength in combination with considerable toughness. Even under the influence of temperature, Torlon® 5030 shows only minimal creep tendency. > Data sheet 
   
• Torlon® 7130 (PAI CF30) is a PAI reinforced with 30% carbon fibres. The reinforcement provides extraordinarily high rigidity, strength and creep resistance even under extreme temperature loads. In contrast to glass fibres, carbon fibres do not attack the mating partner in sliding applications. > Data sheet

Wear-resistant Torlon® grades

• Torlon® 4275 (PAI GR20) is a grade with an increased graphite content, which improves the sliding properties and wear resistance. Torlon® 4275 is therefore particularly suitable for sliding applications at higher sliding speeds. > Data sheet 
   
• Torlon® 4301 (PAI GR12) is the standard plain bearing type. The material offers good wear and sliding properties combined with high mechanical strength. This makes Torlon® 4301 particularly suitable for loaded sliding and bearing elements. > Data sheet 
   
• Torlon® 4435 (PAI mod) is a tribologically modified grade for extreme applications. The combination of different fillers gives the material the best wear properties at high speeds and high surface pressure. > Data sheet 
   
• Torlon® 4630 (PAI GR, TF) is also a tribologically modified grade for non-lubricated applications. Torlon® 4630 offers maximum wear resistance in dry running. > Data sheet 
   
• Torlon® 4645 (PAI CF, TF) is also a plain bearing type that offers maximum wear resistance in lubricated applications due to its filler combination. > Data sheet