Yuncon® N25 POM
Plastic Granules
Yuncon® N25 POM Pellets High-impact Grade Acetal Copolymer
Yuncon® N25 is a high-impact POM copolymer with increased molecular weight. It offers 40% elongation, 8.0 kJ/m² notched impact strength, and 60 MPa tensile yield stress. Suitable for injection molding, extrusion, rods, sheets, and roller conveyor parts.
Typical property data
Physical Properties
- Density: 1.41 g/cm³ (ISO 1183)
- Melt Mass-Flow Rate, MFR: 2.5 g/10 min at 190°C/2.16 kg (ISO 1133)
- Water Absorption: 0.3% at 24 hr, 23°C (ISO 62)
Mechanical Properties
- Tensile Stress at Yield: 60 MPa (ISO 527-2)
- Tensile Modulus: 2550 MPa (ISO 527-2)
- Strain at Break: 40% (ISO 527-2)
- Flexural Strength: 81 MPa (ISO 178)
- Flexural Modulus: 2350 MPa (ISO 178)
- Charpy Notched Impact Strength: 8.0 kJ/m² (ISO 179/1eA)
Thermal Properties
- Heat Deflection Temperature: 88°C at 1.8 MPa, unannealed (ISO 75)
Flame Characteristics
- Flame Rating: HB class (UL 94)
Injection Molding Conditions
- Material Drying: 80–90°C for 3–4 hours
- Nozzle Temperature: 180–210°C
- Front Section Temperature: 190–210°C
- Center Section Temperature: 170–200°C
- Rear Section Temperature: 160–180°C
- Melt Temperature: 180–210°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
Extrusion Conditions
- Recommended Extruder Type: Standard extruder with grooved feed zone and short compression screw
- Minimum Screw Length: 25D
- Extrusion Melt Temperature: 180–190°C
Use & Applications
- Lighters
- aerosol bottles
- fasteners