Yuntianhua® M270 POM
Plastic Granules
Yuntianhua® M270 High-flow Grade Pellets Acetal Copolymer
Yuntianhua® M270 is a high-flow POM copolymer resin for injection molding. It offers low mold deposit, good dimensional stability, high hardness, and low friction. With MFR 27 g/10 min, it suits precision parts, fasteners, lighters, and aerosol bottle components.
Typical property data
Physical Properties
- Density: 1.41 g/cm³ (ISO 1183)
- Melt Mass-Flow Rate, MFR, 190°C / 2.16 kg: 27 g/10 min (ISO 1133)
- Water Absorption, 24 hr / 23°C: 0.5% (ISO 62)
Mechanical Properties
- Tensile Stress at Yield: 62 MPa (ISO 527-2)
- Tensile Modulus: 2700 MPa (ISO 527-2)
- Strain at Break: 25% (ISO 527-2)
- Flexural Strength: 89 MPa (ISO 178)
- Flexural Modulus: 2550 MPa (ISO 178)
- Charpy Notched Impact Strength: 4.5 kJ/m² (ISO 179/1eA)
Thermal Properties
- Heat Deflection Temperature, 1.8 MPa, Unannealed: 98°C (ISO 75)
Flame Characteristics
- UL Flame Rating: HB class (UL 94)
Injection Molding Conditions
- Material Drying Temperature: 80–90°C
- Material Drying Time: 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: 0–80 MPa
- Back Pressure: 0–0.5 MPa
- Screw Rotational Speed: 50–120 rpm
Use & Applications
- Lighters
- aerosol bottles
- fasteners