Yuntianhua® EF POM
Plastic Granules
Yuntianhua® EF Low-friction POM Pellets Acetal Copolymer
Yuntianhua® EF is a lubricant-filled POM copolymer for wear-resistant parts. It improves friction and abrasion performance versus standard POM. It suits gears, rollers, and sliders in high-speed, high-load, low-oil, or oil-free environments.
Associated Documents
TDS - Data Sheet
Typical property data
Physical Properties
- Density: 1.38 g/cm³ (ISO 1183)
- Melt Mass-Flow Rate, MFR: 9 g/10 min at 190°C / 2.16 kg (ISO 1133)
- Water Absorption: 0.6% after 24 hr at 23°C (ISO 62)
Mechanical Properties
- Tensile Stress at Yield: 55 MPa (ISO 527-2)
- Tensile Modulus: 2300 MPa (ISO 527-2)
- Strain at Break: 45% (ISO 527-2)
- Flexural Strength: 75 MPa (ISO 178)
- Flexural Modulus: 2200 MPa (ISO 178)
- Charpy Notched Impact Strength: 5.5 kJ/m² (ISO 179/1eA)
Thermal Properties
- Heat Deflection Temperature: 70°C at 1.8 MPa, unannealed (ISO 75)
Flame Characteristics
- UL Flame Rating: HB class (UL 94)
Injection Molding Conditions
- Material Drying Temperature: 80–90°C
- Material Drying Time: 2–4 hours
- Nozzle Temperature: 180–200°C
- Front Cylinder Temperature: 180–200°C
- Center Cylinder Temperature: 170–190°C
- Rear Cylinder Temperature: 160–180°C
- Melt Temperature: 180–200°C
- Mold Temperature: 60–90°C
- Mold Temperature for Precision Parts: Up to 120°C
- Injection Pressure: 50–100 MPa
- Holding Pressure: 30–80 MPa
- Back Pressure: 0–0.5 MPa
- Screw Rotational Speed: 50–120 rpm
Use & Applications
Gears, rollers, sliders, and abrasion-resistant parts used in high-speed, high-load, oil-free, or low-oil environments.