ACETAL IS WIDELY USED FOR:
• Bearings and bushings
• Pump and valve parts
• Manifolds
• Gears
• Jigs and fixtures
• Food processing and other
• Packaging machinery parts
• Wear pads
• Electrical components
PERFORMANCE CHARACTERISTICS:
• Strong and stiff
• Excellent machinability
• Low moisture absorption
• Excellent wear properties in both
• Wet and dry environments
• Low friction
• Good chemical resistance
COMMON BRANDS:
Delrin®
SUSTARIN®
TECAFORM®
TECHNICAL RESOURCES
Acetal-Data-Sheet.pdf
STANDARD SIZES
| SHEET | Dimensions: 6 in x 12 in – 48 in x 120 in | COLOR
| Sheet and Rod: Black, Blue, Green, Natural, Brown Medical Grade Rod: Dark Blue, Dark Green, Gray Tube: Natural |
| ROAD | Diameter: 0.187 in – 12 in |
| TUBE | Outside Diameter: 25 mm – 230 mm | GRADES | Static Dissipative, Glass-Filled, Enhanced Bearing and Wear, FDA Compliant, Medical |
Length, width, thickness, and diameter tolerances vary by size, by manufacturer, brand, and grade. Custom sizes and colors available upon request.
ACETAL MATERIAL OPTIONS
Homopolymer vs Copolymer– Acetal is available in both homopolymer (Delrin® 150) and copolymer.
• Homopolymer acetal (Delrin®) has superior room temperature strength, stiffness, and toughness.
• Copolymer acetal has excellent performance in continuous high heat and hot water environments.
Copolymer acetal also tends to have less porosity than homopolymer acetal.
FDA Compliant Material– Acetal is available in FDA compliant grades.
Acetal Grades– Acetal is available in a number of grades, including enhanced bearing and wear Delrin® AF, Delrin® 100AF blend, Delrin® AF DE588, and TECAFORM® HPV13. Delrin® 511P is a homopolymer acetal that offers enhanced crystallization characteristics. This higher level of crystallization helps to augment aspects of the physical properties such as fatigue strength, stiffness, and creep resistance.
Ask about special formulations that offer medical, metal detectable, x-ray detectable, or static dissipative grades.
Chemical Attack– Acetal is chemically resistant to many fuels and solvents.
Wear Resistance– Acetal offers good wear and abrasion properties.
TYPICAL PROPERTIES OF ACETAL
| UNITS | ASTM TEST | HOMOPOLYMER ACETAL | COPOLYMER ACETAL | TECAFORM® HPV13 PTFE-FILLED ACETAL | 20% GLASS FIBER FILLED HOMOPOLYMER ACETAL |
| Tensile strength | psi | D638 | 10,000 | 9,800 | 6,800 | 8,500 |
| Flexural modulus | psi | D790 | 420,000 | 370,000 | 350,000 | 730,000 |
| Izod impact (notched) | ft-lbs/in of notch | D256 | 1.5 | 1.0 | 0.7 | 0.8 |
Heat deflection temperature @ 264 psi | °F | D648 | 257 | 230 | 244 | 316 |
Maximum continuous service temperature in air | °F |
| 185 | 195 | 185 | 185 |
Water absorption (immersion 24 hours) | ％ | D570 | 0.25 | 0.20 | 0.22 | 0.25 |
Coefficient of linear thermal expansion | in/in/
°Fx10-5 | D696 | 6.8 | 6.1 | 5.1 | 2.0 - 4.5 |
Coefficient of friction (dynamic) |
|
| 0.20 | 0.21 | 0.12 | 0.35 |
Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.
