Yuntianhua® SF-5 POM
Plastic Granules
Yuntianhua® SF-5 5% PTFE Filled Pellets Acetal Copolymer
Yuntianhua® SF-5 is a PTFE-filled POM copolymer with about 5% PTFE. It offers improved friction and abrasion resistance versus standard POM. This grade is suitable for gears, rollers, sliders, and wear parts used under high speed, high load, oil-free, or low-oil conditions.
Associated Documents
TDS - Data Sheet
Typical property data
Physical Properties
- Density: 1.6 g/cm³ (ISO 1183)
- Melt Mass-Flow Rate, MFR: 7 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: 51 MPa (ISO 527-2)
- Tensile Modulus: 2450 MPa (ISO 527-2)
- Strain at Break: 45% (ISO 527-2)
- Flexural Strength: 70 MPa (ISO 178)
- Flexural Modulus: 2300 MPa (ISO 178)
- Charpy Notched Impact Strength: 5.5 kJ/m² (ISO 179/1eA)
Thermal Properties
- Heat Deflection Temperature: 80°C at 1.8 MPa, unannealed (ISO 75)
Flame Characteristics
- UL Flame Rating: HB class (UL 94)
Injection Molding Processing Parameters
- 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
- abrasion-resistant components used in high-speed, high-load, oil-free, or low-lubrication environments.