Color | Black, White, Red |
Size | 600*1200/1000*2000mm |
POMC rod Diameter | 15-250mm |
<spanVerdana",sans-serif; mso-bidi-font-family:SimSun;color:#222222;mso-font-kerning:18.0pt">Acetal Delrin Sheet
<spanArial",sans-serif; color:#222222;mso-font-kerning:0pt">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.
<spanArial",sans-serif; color:#222222;mso-font-kerning:0pt">Acetals’ 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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· <spanArial",sans-serif; color:#222222">Exnt dimensional stability
· <spanArial",sans-serif; color:#222222">Continuous use temperature of 180°F
· <spanArial",sans-serif; color:#222222">Porosity free
· <spanArial",sans-serif; color:#222222">Consistent properties in wet or moist environments
· <spanArial",sans-serif; color:#222222">Very low moisture absorption
· <spanArial",sans-serif; color:#222222">Exnt electrical properties
· <spanArial",sans-serif; color:#222222">Easy to machine to close tolerances
· <spanArial",sans-serif; color:#222222">Natural and Black are FDA & USDA compliant
· <spanArial",sans-serif; color:#222222">Bushings and bearings
· <spanArial",sans-serif; color:#222222">Rollers and gears
· <spanArial",sans-serif; color:#222222">Valves and manifolds
· <spanArial",sans-serif; color:#222222">Scraper blades
· <spanArial",sans-serif; color:#222222">Wear strips and pads
· <spanArial",sans-serif; color:#222222">Jigs and fixtures
· <spanArial",sans-serif; color:#222222">Electrical components
· <spanArial",sans-serif; color:#222222">Parts which operate in water between 60 to 90C
· <spanArial",sans-serif; color:#222222">ASTM POM 0211, D6778
· <spanArial",sans-serif; color:#222222">FDA21 CFR 177.2470
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 | + | ||
Resistance to acid and alkali water | + | ||
Chloric acid alkali resistance | 0 | ||
Resistant to aromatic compounds | + | ||
The ketone resistance | 23â 60%RH | + | |
Water resistance | 23â 60%RH | + | |
Others properties | |||
combustibility | UL 94 | HB | |
paste | - | + | |
Non-s | EEC 90/128 FDA | + | |
friction coefficient | DIN 53375 | - | |
uvioresistant | - | 0 |