TECASINT 1021 black

polyimide with 15 % graphite

TECASINT 1021 black has been developed from the base polymer TECASINT 1011 natural. Unlike TECASINT 1011, however, it contains 15% graphite. The material has improved friction and wear properties for tribological applications. TECASINT 1021 is suitable for both lubricated and dry applications since it is self lubricating.


Chemical designation
PI (Polyimide)
1,41 g/cm3

Main Features

  • very good thermal stability
  • very good slide and wear properties
  • good wear resistance
  • good chemical resistance
  • high thermal and mechanical capacity
  • resistance against high energy radiation
  • high creep resistance
  • sensitive to hydrolysis in higher thermal range

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitParameterNorm
    Notched impact strength (Charpy)3.7kJ/m2max 7.5 J, 23°CDIN EN ISO 179-1
    Impact strength (Charpy)34kJ/m2max 7.5 J, 23°CDIN EN ISO 179-1
    Shore hardness88-Shore D, 23°C-
    Tensile strength97MPa50 mm/min, 23°CDIN EN ISO 527-1
    Elongation at break (tensile test)3.2%50 mm/min, 23°CDIN EN ISO 527-1
    Modulus of elasticity
    (tensile test)
    4000MPa1 mm/min, 23°CDIN EN ISO 527-1
    Flexural strength150MPa10 mm/min, 23°CDIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    4000MPa2 mm/min, 23°CDIN EN ISO 178
    Compression strength210MPa10 mm/min, 23°CEN ISO 604
    Compression modulus1880MPa1 mm/min, 23°CEN ISO 604
    Elongation at break (tensile test)4.0%10 mm/min, 23°CDIN EN ISO 178
    Compression strength175MPa10mm/min, 10% strain, 23°CEN ISO 604
    Compressive strain at break20.1%10 mm/min, 23°CEN ISO 604
  • Thermal properties
    Thermal propertiesValueUnitParameterNorm
    Glass transition temperature353C-
    Heat distortion temperature300C1.85 MPaDIN 53 461
    Service temperature-Clong-term-
    Thermal expansion (CLTE)10-5*1/K50-200°CDIN 53 752
    Specific heat1.16J/(g*K)-
    Thermal conductivity0.80W/(k*m)40°CISO 8302
  • Other properties
    Other propertiesValueUnitParameterNorm
    Water absorption0.78%24 h in water, 23°CDIN EN ISO 62
    Water absorption1.57%24 h in water, 80°CDIN EN ISO 62
    Flammability (UL94)V0-corresponding toDIN IEC 60695-11-10;

Stock program