Poliacetal – POM – A.D.

Chemical Designation: Polyoxymethylene (Homopolymer)

DIN Abbreviation: POM

Colour, Filler: Opaque

Stock Availability: Standard lengths 3 metres, also cut to size

Rod 3 – 250 mm dia

Plate 5 – 100 mm thick

Tube 20 – 300 mm OD


Finished parts, machined or injection moulded

Poliacetal POM- A.D. is a semicrystalline, thermoplastic engineering material with high strength and rigidity, excellent machinability and varied applications.

Main characteristics: strong and rigid, very good electrical

tough insulation

good sliding properties, easily machined, polished

resistant to dilute acids, not resistant long term

cleaning agents, numerous to water over 60 °C

solvents, easily welded

  • Preferred Fields: Mechanical engineering, automotive engineering, transport and conveyor technology, electrical engineering, precision engineering, household appliances, plant construction

Applications: friction bearings, friction strips

gears, plugs

spring elements, insulators

housing parts, snap fit connectors

rollers, seals

Poliacetal – POM A.D.

The following information corresponds with our current knowledge and indicates our products and possible applications. We cannot give a legally binding guarantee of certain properties or the suitability for a specific application. Existing commercial patents must be observed. A definitive quality guarantee is given in our general conditions of sales. Unless otherwise stated, these values represent averages taken from injection moulding samples. We reserve the right of technical alterations.

PropertiesUnitTest method DIN ASTM 
Densityg/cm³53 4791.42
Tensile strength at yieldMPa53 45570
Tensile strength at breakMPa53 455
Elongation at break%53 45540
Modulus of elasticity in tensionMPa53 4573300
Modulus of elasticity in flexureMPa53 4572620
Ball indentation hardnessMPa53 456170
Impact strength
kJ/m253 453no br.
Creep rupture strength after 1000 hrs with static loadMPa40
Time yield limit for 1% elongation after 1000 hrs.MPa13
Coefficient of friction against hardened and ground steel
p = 0,05 N/mm², v = 0,6 m/s
Wear conditions as aboveµm/km4.6
Crystalline melting point°C53 736175
Glass transition temperature°C53 736– 38
Heat distortion temperature Method A Method B°C
ISO 75
ISO 75
PropertiesUnitTest method DIN ASTM 
Max. service temperature
short term long term
Coefficient of thermal conductivityW/(m . K)0.31
Specific heatJ/(g . K)1.5
Coefficient of thermal expansion10-5/K10
Dielectric constant at 105 Hz53 4833,7
Dielectric loss factor at 105 Hz53 4830.005
Specific volume resistanceW . cm53 4821015
Surface resistanceW53 482
Dielectric strength 1 mmkV/mm53 481>50
Tracking resistance53 480KA 3c
Moisture absorption:
Equilibrium in standard atmosphere (23 °C / 50 % relative humidity)
%53 7140.3
Water absorption at saturation
at 23 °C
%53 4950.5
Resistance to hot water, washing sodanot resistant
FlammabilityUL 94HB
Resistance to weatheringnot resistant

* after storage in a standard 23/50 atmosphere (DIN 50 014) to equilibrium

Europlásticos coloca a disposição, também :

  • Semi-finished product, finished parts, injection moulded parts and profiles in more than 500 materials and modifications.
  • Engineering plastics: PA extruded or cast, POM, PC, PET, PBT, PPE, PP, PE
  • High temperature plastics: PI, PEEK, PPS, PES, PPSU, PEI, PSU, PVDF, PCTFE, PTFE
  • Stock length: Standard 3 metres
  • Pressed/sintered semi-finished product: PI, PEEK, PPS, PTFE/PI and modifications, as well as PCTFE in special sizes ie, large discs, tube and rings with diameters up to about 820 mm
  • Material modifications: eg glass, carbon and aramid fibre, talc, MoS2, graphite, PTFE, PE, silicone oil, internal lubrication
  • Pultruded stock shapes: matrix polyester, vinylester and epoxy resin with glass or carbon continuous fibre.