Available formats: Bars, Tubes, and Plates


Delrin H (POM-H) is a homopolymer acetal that has exceptional slip properties and good wear resistance. Compared to POM-C, POM-H has a slightly higher density, hardness and strength due to its greater crystallinity.


In addition, POM-H offers good electrical insulation and exceptional machining characteristics, which makes Delrin H acetal one of the most versatile engineering materials currently available.


When comparing Delrin C and Delrin H, the Delrin or POM-H homopolymer combines greater fatigue and creep resistance with greater overall strength and greater tensile strength and stiffness, allowing for a thinner part design and light, and the potential for lower cost of production of parts.


A fundamental characteristic of DELRIN H is its resistance, it is a rigid, firm and hard material, it has good sliding and friction properties and very good electrical insulation. Other properties include:

  • high mechanical strength
  • good tribological properties
  • electrical insulator
  • hard to paste
  • good chemical resistance
  • good machinability
  • easy to polish
  • not resistant to hot water above 60ºC


It is used in the following industries:

  • Mechanical Engineering
  • Food Industry
  • electronics
  • Aeronautical and aerospace technology
  • Automotive

Physical Properties

Physical Properties Rule Units Values
Specific weight ISO 1183 g / cm3 1.42 - 1.43
Water absorption upon saturation ISO 62 % 0,5
Moisture absorption at 23 ° C? 50% RH ISO 62 % 0,2
Upper limit of working temperature - ºC 100
Lower limit of working temperature - ºC -50

Mechanical properties

Mechanical properties Rule Units Values
Elastic limit (2) ISO 527 MPa 72
Elongation in performance (2) ISO 527 % 40
Tensile strength until breakage (2) ISO 527 MPa -
Elongation to breakage (2) ISO 527 % -
Traction Module (2) ISO 527 MPa 3100
Impact resistance without notches ISO 179 KJ / mm2 -
Notched Impact Resistance ISO 179 KJ / mm2 11
Rockwell hardness M ISO 2039 N / mm2 -
Shore D hardness DIN 53505 ° Shore D 84
Flexural strength - at 3.5% ISO 178 MPa 89
Flex module ISO 178 MPa -
Compressive tension (1% voltage-23 ° C) ISO 604 MPa -
Compression module ISO 604 MPa -
Deformation under load 100 Mpa-24 hr- RT - % -
Poisson relationship Abs -

(1) For a tension-free resistance of 5000 h: approximate reduction of the value in 1000 hours to 50% of the tensile strength. (2) Stabilized in air at 50% relative humidity. (*) Drying / stabilizing in the atmosphere 50% HR -23 ° C. (**) Stabilizing in the atmosphere 50% HR -23 ° C. (***) Resistance to UV exposure is achieved with pigmentation or specific additive. (****) Bonding and painting are possible after a special surface treatment. The data shown in this table have been determined in our laboratories and should only be considered as a useful reference; They did not commit for us in the different forms of application. As a result of our technological experience and our best knowledge, the data offers an initial evaluation of the polymer. This data cannot be applied to finished parts as obtained under specific conditions and is only an average value. Values should be considered a useful reference and are given without compromise.


  • DELRIN H bars
  • DELRIN H tubes
  • DELRIN H plates

Specialized Technical Advice

We have specialized staff with extensive experience in the sector for any specific advice they need.

Get your quote or Contact us:
(+34) 961 340 776

Contact our specialists for more information.