Yuncon® GM90 POM
Plastic Granules
Yuncon® GM90 Standard-flow Grade POM Pellets Acetal Copolymer
Yuncon® GM90 is a standard-flow POM copolymer for injection molding and extrusion. It offers low friction, low warpage, and good dimensional stability. With 61 MPa tensile yield stress and 9 g/10 min MFR, it fits gears, bearings, valves, pumps, and thin-wall parts.
Associated Documents
TDS - Data Sheet
Typical property data
Physical Properties
- Density: 1.41 g/cm³ (ISO 1183)
- Melt Mass-Flow Rate, MFR: 9 g/10 min at 190°C / 2.16 kg (ISO 1133)
- Water Absorption: 0.3% after 24 hr at 23°C (ISO 62)
Mechanical Properties
- Tensile Stress at Yield: 61 MPa (ISO 527-2)
- Tensile Modulus: 2550 MPa (ISO 527-2)
- Strain at Break: 30% (ISO 527-2)
- Flexural Strength: 88 MPa (ISO 178)
- Flexural Modulus: 2500 MPa (ISO 178)
- Charpy Notched Impact Strength: 5.5 kJ/m² (ISO 179/1eA)
Thermal Properties
- Heat Deflection Temperature: 90°C at 1.8 MPa, unannealed (ISO 75)
Flame Characteristics
- UL Flame Rating: HB class (UL 94)
Injection Molding Conditions
- Material Drying: 80–90°C for 3–4 hr
- Nozzle Temperature: 180–210°C
- Front Section Temperature: 190–210°C
- Center Section Temperature: 170–200°C
- Rear Section Temperature: 60–180°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
- Automotive electronics
- Automotive exterior parts
- Automotive under-the-hood parts
- Bearings
- Fittings
- Gears
- Piping
- Pump parts
- Thin-walled parts
- Valves and valve parts
- Wheels