TECAPAI CM XP403 green

​Unreinforced polyamide-imide (PAI)

TECAPAI CM XP403 green is a compression moulded Torlon® plastic material that is unreinforced and delivers an excellent combination of physical properties. Made from Solvay Torlon® powder, this PAI material offers excellent ductility and toughness as well as good strength and stiffness at elevated temperatures. Additional characteristics include good dielectric properties, wear performance, and excellent chemical resistance in its staple, which is typical of polyamide-imide properties. Users will find this PAI polymer extremely useful in applications such as electrical connectors, wear components and large parts that require strength and stiffness. Because it is compression moulded, TECAPAI CM XP403 green can be ordered by the piece, adding to its usefulness and versatility. TECAPAI CM XP403 green is Ensinger's version of a product commonly referred to in web searches as "torlon 4503".

Torlon® PAI is a registered trademark of the Solvay Group.



Chemical designation
PAI (Polyamide-imide)
1,41 g/cm3

Main Features

  • good wear properties
  • excellent strength and stiffness
  • excellent dimensional stability
  • very good thermal stability
  • excellent chemical resistance

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitParameterNorm
    Impact strength (Charpy)81kJ/m2max. 7,5JDIN EN ISO 179-1eU
    Shore hardness85-D scaleDIN EN ISO 868
    Compression strength12/32/90MPa1% / 2% / 5%EN ISO 604
    Modulus of elasticity
    (tensile test)
    3600MPa1 mm/minDIN EN ISO 527-2
    Tensile strength at break122MPa5mm/minDIN EN ISO 527-2
    Modulus of elasticity
    (flexural test)
    3600MPa2mm/min, 10 NDIN EN ISO 178
    Elongation at break8%5mm/minDIN EN ISO 527-2
    Flexural strength173MPa2mm/min, 10 NDIN EN ISO 178
    Ball indentation hardness221MPaISO 2039-1
  • Thermal properties
    Thermal propertiesValueUnitParameterNorm
    Thermal expansion (CLTE)4,210-5*1/K23-60°C, longitudinalDIN EN ISO 11359-1;2
    Glass transition temperature285CDIN EN ISO 11357
    Thermal expansion (CLTE)4,210-5*1/K23-100°C, longitudinalDIN EN ISO 11359-1;2
  • Electrical properties
    Electrical propertiesValueUnitParameterNorm
    Dielectric constant3,5-@ 1 MHzDIN 53 481
    Dielectric constant3,8-@ 100 HzDIN 53 481
    Dissipation factor0,019Ω/sq@ 1 MHzDIN 53 481
    Dielectric strength26kV/mmISO 60243-1
    Dissipation factor0,0055%@ 100 HzDIN 53 481
  • Other properties
    Other propertiesValueUnitParameterNorm
    Flammability (UL94)V0-3,2 mm-
    Moisture absorption0,4 / 0,57%24h / 96h (23°C)DIN EN ISO 62

Stock program