TECAFORM AD HM natural

High-strength Acetal

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TECAFORM AD HM is a newly developed homopolymer acetal stock shape manufactured from a new high performance Delrin® engineering resin. The Delrin 100 series POM-H resins (including the Delrin 150 extrusion grade) are well known for their superior mechanical properties, especially as they relate to improved performance in plastic gear and plastic sprocket applications. They offer light weight, high strength, excellent creep and fatigue performance and low noise. TECAFORM AD HM demonstrates significant improvement in strength and longevity, and significantly higher modulus than the traditional homopolymer acetal. These characteristics make it ideally suited for plastic gears in power transmission applications in general, and automotive and e-bike applications specifically. The material also exhibits lower porosity than is found in standard TECAFORM AD natural. 

Facts

Chemical designation
POM-H (Polyacetal (Homopolymer))
Colour
natural
Density
1.43 g/cm3

Main Features

  • excellent mechanical properties
  • excellent strength and stiffness
  • high fatigue strength
  • high mechanical load capacity
  • excellent flexural strength
  • good machinability

Target industries

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Technical details


  • product-technical-detail-collapse-item-0-lvl-1
    Mechanical properties Value Unit Parameter Norm
    Tensile strength at yield 11,400 psi @73°F ASTM D 638
    Elongation at yield (tensile test) 50 % @73°F ASTM D 638
    Elongation at break (tensile test) 57 % @73°F ASTM D 638
    Modulus of elasticity
    (tensile test)
    627,000 psi @73°F ASTM D 638
    Compression strength 3900 psi @73°F; 1% strain ASTM D 695
    Compression strength 16,000 psi @73°F; 10% strain ASTM D 695
    Compression modulus 397,000 psi @73°F ASTM D 695
    Flexural strength 13,800 psi @73°F ASTM D 790
    Modulus of elasticity
    (flexural test)
    510,000 psi @73°F ASTM D 790
    Impact strength (Izod) 2.75 ftlbsin @73°F ASTM D 256
    Rockwell hardness 92 @73°F ASTM D 785
  • product-technical-detail-collapse-item-1-lvl-1
    Thermal properties Value Unit Parameter Norm
    Service temperature 300 F Intermittent -
    Service temperature 185 F Continuous -
    Melting temperature 347 F ASTM D 2133

Stock program