Color | Black, White, Red |
Size | 600*1200/1000*2000mm |
POMC rod Diameter | 15-250mm |
Acetal Delrin Sheet
Acetal resins (polyoxymethylene or POM) are engineering thermoplastics based on formaldehyde polymerization technology. Acetal resins have high tensile strength, stiffness, resilience, fatigue endurance, a low coefficient of friction against metals, acetals and other plastics and moderate toughness. The Acetal sheet has high resistance to organic solvents, exnt dimensional stability, a low coefficient of friction and outstanding abrasion resistance among thermoplastics.
Acetalsâ resistance to creep is exnt. Moisture, lubricants and solvents including gasogasohol have little effect on this property, which is important in parts incorporating self-threading screws or interference fits. Good electrical properties qualify these materials for electrical applications requiring long-term stability. Acetal copolymers retain much of their toughness through a broad temperature range and are among the most creepresistant of the crystalmoplastics. A low moisture absorption characteristic permits molded parts to serve reliably in environments involving humidity variations.
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·        Exnt dimensional stability
·        Continuous use temperature of 180°F
·        Porosity free
·        Consistent properties in wet or moist environments
·        Very low moisture absorption
·        Exnt electrical properties
·        Easy to machine to close tolerances
·        Natural and Black are FDA & USDA compliant
·        Bushings and bearings
·        Rollers and gears
·        Valves and manifolds
·        Scraper blades
·        Wear strips and pads
·        Jigs and fixtures
·        Electrical components
·        Parts which operate in water between 60 to 90C
·        ASTM POM 0211, D6778
·        FDA21 CFR 177.2470
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Properties | Standard | Unit | Result |
mechanical property | |||
Density | ASTM D792 | g/cm3 | 1.43 |
Tensile strength | ASTM D638 | Mpa | 100 |
ultimate elongation | ASTM D638 | % | 10 |
bending strength | ASTM 790 | Mpa | 150 |
bending modulus | ASTM 790 | Mpa | 4500 |
hardness | ASTM D2240 | D | 85 |
Impact strength | ASTM D256 | J/M | 100 |
Thermal properties | |||
Melting poing | DSC | â | 190 |
working Temp. | ASTM D648 | â | 140 |
Permanent Temp. | - | â | 120 |
Short-period Temp. | - | â | 150 |
Pyroconductivity | DIN 52612-1 | W/(K-M) | 0.31 |
dilatation coefficient | ASTM D696 | 10-5-1/K | 6 |
electrical property | |||
dielectric strength | ASTM D150 | KV-mm | 22 |
dielectric loss coefficient | ASTM D150 | - | 0.005 |
Volume resistance | ASTM D257 | Ω.cm | 1014 |
surface resistance | ASTM D257 | Ω | 1016 |
dielectric constant | ASTM D149 | - | 3.9 |
Chemical properties | |||
Water absorption | 23â 60%RH | % | 0.35 |
Acid resistance | 23â 60%RH |  | + |
Alkali resistance | Â | Â | + |
Resistance to acid and alkali water | Â | Â | + |
Chloric acid alkali resistance | Â | Â | 0 |
Resistant to aromatic compounds | Â | Â | + |
The ketone resistance | 23â 60%RH |  | + |
Water resistance | 23â 60%RH |  | + |
Others properties | |||
combustibility | UL 94 | Â | HB |
paste | - |  | + |
Non-s | EEC 90/128 FDA | Â | + |
friction coefficient | DIN 53375 |  | - |
uvioresistant | - | Â | 0 |