TECAFORM® AH natural

POM-C unfilled

TECAFORM AH natural acetal is an unfilled POM-C with a unique balance of physical properties not available in most other thermoplastics. This copolymer acetal is an engineering plastic made for wide-ranging universal applications in many different industries. The key performance characteristics of unmodified POM copolymer include high mechanical strength and rigidity, excellent wear, low moisture absorption and excellent dimensional stability. Unfilled POM-C copolymer is manufactured by Ensinger under the tradename TECAFORM AH natural, and offers high crystallinity and a good degree of toughness (even in the lower temperature range), combined with good chemical resistance.



Chemical designation
POM-C (Polyacetal (Copolymer))
Alternative colors available
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
    Tensile strength at yield9,300psi@ 73 °FASTM D 638
    Modulus of elasticity
    (tensile test)
    330,000psi@ 73 °FASTM D 638
    Elongation at break (tensile test)40%@ 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
    Impact strength (Izod)1.0ftlbsin@ 73 °F-
    Rockwell hardness86-@ 73 °FASTM D 785
    Wear (K) factor65 x 10-10in3minftlbshr40 psi, 50 fpmASTM D 3702
    Coefficient of friction.21lbs/in^2DynamicASTM D 3702
    Tensile strength at break9,700psi@ 73 °FASTM D 638
    Elongation at yield9%@ 73 °FASTM D 638
    Compression modulus250,000psi@ 73°FASTM D 695
    Compression strength2,500psi@ 73 °F, 1% strainASTM D 695
    Compression strength12,000psi@ 73 °F, 10% strainASTM D 695
    Rockwell hardness120-@ 73 °F, R scaleASTM D 785
  • Thermal properties
    Thermal propertiesValueUnitConditionTest Method
    Deflection temperature316F@ 66 psiASTM D 648
    Deflection temperature230F@264 psiASTM D 648
    Service temperature285FIntermittent-
    Service temperature195FLong Term-
    Melting temperature329F-
    Thermal expansion (CLTE)4.7*10-5ininFASTM D 696
  • Electrical properties
    Electrical propertiesValueUnitConditionTest Method
    Volume resistivity1.0 x 1014O*cmASTM D 257
    Dielectric strength500V/milASTM D 149
    Dielectric constant3.7%@ 60 Hz, 73 °F, 50% RHASTM D 150
    Dissipation factor.001%@ 60 Hz, 73 °FASTM D 150
  • 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