Precision engineered Acetal parts from China's leading manufacturer
Acetal (Delrin) is a high-performance thermoplastic known for its excellent strength, stiffness, dimensional stability, and low friction. It combines the best qualities of metals and plastics—offering high tensile strength and rigidity while being lightweight and corrosion-resistant. Its natural lubricity and low moisture absorption make it ideal for moving parts and precision mechanisms.
At Yumei, with over 16 years of experience, we use advanced CNC machining to produce precision Acetal components with tight tolerances, superior surface finishes, and consistent quality for demanding applications across various industries.
| ASTM or UL test | Acetal Copolymer | Property | Delrin ®Homopolymer | Delrin ®Homopolymer |
|---|---|---|---|---|
| PHYSICAL | ||||
| D792 | 0.051 1.41 | Density (lb/in³)(g/cm³) | Density (lb/in³)(g/cm³) | 0.054 1.50 |
| D570 | D570 | Water Absorption, 24 hrs (%) | 0.2 | 0.2 |
| MECHANICAL | ||||
| D638 | 9500 | Tensile Strength (psi) | 11000 | 8000 |
| D638 | 400000 | Tensile Modulus (psi) | Tensile Modulus (psi) | Tensile Modulus (psi) |
| D638 | 30 | Tensile Elongation at Break (%) | 30 | 15 |
| D790 | 12000 | Flexural Strength (psi) | 13000 | 12000 |
| D790 | 400000 | Flexural Modulus (psi) | 450,00 | 435000 |
| D695 | 15000 | Compressive Strength (psi) | 16000 | 16000 |
| D695 | 400000 | Compressive Modulus (psi) | 450000 | 350000 |
| D785 | M88/R120 | Hardness, Rockwell | M89/R122 | M85/R115 |
| D256 | 1 | IZOD Impact Notched (ft-lb/in) | 1 | 0.7 |
| THERMAL | ||||
| D696 | 5.4 | Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) | 4.7 | 5 |
| D648 | 220 / 104 | Heat Deflection Temp (°F / °C) at 264 psi | 250 / 121 | 244 / 118 |
| D3418 | 335 / 168 | Melting Point Temp (°F / °C) | 347 / 175 | 347 / 175 |
| - | 180 / 82 | Max Operating Temp (°F / °C) | 180 / 82 | 180 / 82 |
| C177 | 1.6 5.5 | Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10-4 cal/cm-sec-°C) | 2.5 8.6 | ➖ |
| UL94 | HB | Flammability Rating | HB | HB |
| ELECTRICAL | ||||
| D149 | 420 | Dielectric Strength (V/mil) short time, 1/8" thick | 450 | 400 |
| D150 | 3.8 | Dielectric Constant at 1 MHz | 3.7 | 3.1 |
| D150 | 0.005 | Dissipation Factor at 1 MHz | 0.005 | 0.010 |
| D257 | 10¹⁵ | Volume Resistivity (ohm-cm) at 50% RH | 10¹⁵ | 3.0 x 1016 |
A：Yes, we provide complete material certifications and quality documentation including material test reports, dimensional inspection reports, and compliance certificates as required. All materials are sourced from reputable suppliers with full traceability.
A: Does Acetal machining support both small batch prototypes and large-scale production? What is the typical delivery timeline?
A: CNC machining for acetal involves precision milling, turning, and drilling of POM (polyoxymethylene) to produce high-strength, low-friction plastic components.
A:Acetal is popular due to its:Excellent dimensional stability、Low friction and wear resistance、High stiffness and strength、Good machinability、Low moisture absorption.
A:POM is the generic name for acetal, while Delrin® is a branded homopolymer acetal with slightly higher strength and stiffness compared to copolymer grades.
A:Acetal parts are commonly used in:Automotive、Electronics、Industrial machinery、Consumer products、Food processing equipment.
A:Typical tolerances range from ±0.1 mm to ±0.5 mm, thanks to acetal’s excellent dimensional stability.
A:Use sharp cutting tools, optimized feeds and speeds, and proper chip removal to achieve smooth, high-quality surfaces.
A:Yes, certain acetal grades are FDA-compliant and widely used in food processing, conveyor systems, and packaging equipment.
