DELRIN® Series Black

POM-H black

Delrin® 150 black is a homopolymer acetal material that is manufactured by Ensinger (using DuPont™ Delrin® resin) and sold under the tradename TECAFORM® AD black. Delrin® 150 black exhibits a high melting point and high strength, but is sensitive to hydrolysis with continuous exposure to hot water over 140°F and steam. Black Delrin®, POM-H holds a slightly higher density, hardness and strength than acetal POM-C. ​Furthermore, POM-H black has excellent wear resistance and good sliding properties, as well as an outstanding machining ability, thus, making POM-H black an extremely adaptable engineering material. ​​Delrin® is a registered trademark of DuPont.


Chemical designation
POM-H (Polyacetal (Homopolymer))
Alternative colors available
1,42 g/cm3

Main Features

  • good machinability
  • high stiffness
  • high fatigue strength
  • high creep resistance
  • good wear properties
  • very good abrasion resistance

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitConditionTest Method
    Rockwell hardness120-@ 73 °FASTM D 785
    Modulus of elasticity
    (tensile test)
    350,000psi@ 73 °FASTM D 638
    Coefficient of friction.2lbs/in^2DynamicASTM D 3702
    Wear rate55*10-10in3minftlbshr40 psi, 50 fpmASTM D 3702
    Elongation at break40%@ 73 °FASTM D 638
    Impact strength (Izod)1.5ftlbsin@ 73 °FASTM D 256
    Modulus of elasticity
    (flexural test)
    460,000psi@ 73 °FASTM D 790
    Flexural strength14,000psi@ 73 °FASTM D 790
    Tensile strength at yield11,000psiASTM D 638
    Compression strength2,700psi@ 73 °F, 1% strainASTM D 695
    Compression strength14,000psi@ 73 °F, 10% strainASTM D 695
    Compression modulus460,000psi@ 73 °FASTM D 695
  • Thermal properties
    Thermal propertiesValueUnitConditionTest Method
    Melting temperature347FASTM D 2133
    Service temperature300FIntermittent-
    Deflection temperature208F@1.80 MPaISO-R 75 Method A
    Service temperature185FLong Term-
  • Other properties
    Other propertiesValueUnitConditionTest Method
    Moisture absorption.90%@ saturation, 73 °FASTM D 570

Stock program