POM-C black

In addition to TECAFORM AH natural (POM-C), which is white in color, a black acetal version is also readily available from stock; TECAFORM AH black. ​POM-C black is a copolymer acetal material manufactured by Ensinger under the tradename TECAFORM AH black in standard stock shapes for machining, and is extruded in sheet, rod and tube​​. This POM black material exhibits good chemical resistance, high strength, rigidity and hardness as well good sliding and wear properties. In addition, this black acetal can also be suitable for direct contact with food, and has improved UV protection for outdoor use.


Chemical designation
POM-C (Polyacetal (Copolymer))
1,41 g/cm3

Main Features

  • good wear properties
  • low water absorption
  • good chemical resistance
  • easy to machine
  • high dimensional stability

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitConditionTest Method
    Elongation at break40%@ 73 °FASTM D 638
    Modulus of elasticity
    (flexural test)
    400,000psi@ 73 °FASTM D 790
    Flexural strength13,000psi@ 73 °FASTM D 790
    Compression strength4,500F@ 73 °F, 5 % strainASTM D 695
    Modulus of elasticity
    (tensile test)
    330,000psi@ 73 °FASTM D 638
    Tensile strength at yield9,300psi@ 73 °FASTM D 638
    Coefficient of friction.21lbs/in^2DynamicASTM D 3702
    Wear rate65 x 10-10in3minftlbshr40 psi, 50 fpmASTM D 3702
    Rockwell hardness86-@ 73 °FASTM D 785
    Impact strength (Izod)1.0ftlbsin@ 73 °F-
    Compression strength2,500psi@ 73 °F, 1% strainASTM D 695
    Tensile strength at break9,700psi@ 73 °FASTM D 638
    Elongation at yield9%@ 73 °FASTM D 638
    Compression modulus250,000psi@ 73°FASTM D 695
    Compression strength12,000psi@ 73 °F, 10% strainASTM D 695
    Rockwell hardness120-@ 73 °F, R scaleASTM D 785
  • Thermal properties
    Thermal propertiesValueUnitConditionTest Method
    Service temperature285FIntermittent-
    Service temperature195FLong Term-
    Melting temperature329F-
    Deflection temperature316F@ 66 psiASTM D 648
    Deflection temperature230F@264 psiASTM D 648
    Thermal expansion (CLTE)4.7*10-5ininFASTM D 696
  • Electrical properties
    Electrical propertiesValueUnitConditionTest Method
    Dielectric constant3.7%@ 60 Hz, 73 °F, 50% RHASTM D 150
    Dissipation factor.001%@ 60 Hz, 73 °FASTM D 150
    Dielectric strength500V/milASTM D 149
    Volume resistivity1.0 x 1014O*cmASTM D 257
  • Other properties
    Other propertiesValueUnitConditionTest Method
    Flammability (UL94)HB%UL 94-
    Moisture absorption0.18%@ 24 hrs, 73 °FASTM D 570
    Moisture absorption.80%@ saturation, 73 °FASTM D 570

Stock program