Chimei WONDERLITE® PC-681U
Chimei WONDERLITE PC-681U Flame Retardant Low Temperature Impact Resistance
CHIMEI WONDERLITE® PC-681U is a flame-retardant, non-halogenated polycarbonate resin engineered for demanding environments. With 1.5mm V-0 flammability certification, exceptional low-temperature impact resistance (-30°C), and UV stability (UL 746C f1), it’s ideal for electrical enclosures, outdoor components, and safety-critical applications.
Plastic Granules
Typical property data
Physical Properties
- Mass Density: 1.2 g/cm³ (ISO 1183)
- Melt Flow Index: 10 ml/10 min at 300°C × 1.2 kg (ISO 1133)
Mechanical Properties
- Tensile Strength (Yield): 60 MPa (ISO 527, 50 mm/min)
- Tensile Strength (Break): 65 MPa (ISO 527, 50 mm/min)
- Tensile Elongation: 110% (ISO 527, 50 mm/min)
- Flexural Strength: 90 MPa (ISO 178, 2 mm/min)
- Flexural Modulus: 2.3 GPa (ISO 178, 2 mm/min)
- Izod Impact Strength (23°C, Notched): 60 kJ/m² (ISO 180/1A)
- Izod Impact Strength (-30°C, Notched): 45 kJ/m² (ISO 180/1A)
- Charpy Impact Strength (23°C, Notched): 60 kJ/m² (ISO 179)
- Charpy Impact Strength (-30°C, Notched): 45 kJ/m² (ISO 179)
Thermal Properties
- Vicat Softening Temperature: 150°C (50°C/hr, 1 kg, ISO 306)
- Heat Distortion Temperature (Unannealed): 125°C (1.8 MPa, ISO 75/A)
- Heat Distortion Temperature (Annealed): 140°C (1.8 MPa, ISO 75/A)
- Coefficient of Linear Thermal Expansion: 6.5×10⁻⁵ (ISO 11359)
Flammability
- Flammability Rating:
- 1.5 mm: V-0 (UL-94)
- 3.0 mm: 5VA (UL-94)
- Feeding Zone: 230–300°C
Mold Shrinkage
- Shrinkage: 0.4–0.6% (ISO 294-4)
Process Guide
- Pre-drying Conditions: 120°C for 4 hours (varies with humidity, storage conditions, and dryer performance)
- Barrel Temperature Profile:
- Nozzle: 250–310°C
- Compression Zone: 250–320°C
- Feeding Zone: 230–300°C
- Mold Temperature: 70–120°C (varies with mold thickness, cooling system, gate, and runner design)
- Purging Material: Polyethylene or polypropylene recommended.
Use & Applications
- EV & Power: EV battery pack covers, DC/DC converter housings, busbar insulators, onboard charger shells.
- Outdoor Electronics: outdoor charger enclosures, roadside IoT gateway housings, telecom cabinet brackets.
- Industrial Enclosures: relay boxes, circuit breaker covers, motor terminal housings.
- Cold-Chain Equipment: refrigeration control housings, cold-storage sensor shells.
Features & Benefits
Halogen-Free Flame Retardancy
WONDERLITE® PC-681U meets 1.5mm V-0 and 3.0mm 5VA flammability standards without bromine or chlorine, ensuring safer compliance for electronics and appliances.
Freeze-Proof Durability
It retains 45 KJ/m² impact resistance at -30°C, perfect for automotive parts or outdoor equipment exposed to extreme cold.
Weather-Resistant Performance
UV-stabilized and UL 746C f1 certified, it withstands decades of sunlight, rain, and humidity—ideal for outdoor connectors or LED housings.
FAQs
Yes. RoHS report EKR24C00603M01 shows Cl, Br, I below 50 mg/kg. Chimei environmental statement confirms no intentional halogen addition.
UL Product iQ File No. E56070 for PC-681U(f1)(a): 1.5 mm V-0, 3.0 mm 5VA and V-0. Color: ALL. ISO TDS: 1.5 mm V-0, 3.0 mm 5VA.
Yes. UL Yellow Card lists f1 (UL 746C) for outdoor use. ISO TDS states UV Stabilized. GWIT 825/850°C, GWFI 960°C.
Low-temperature impact resistance (60/45 kJ/m² at -30°C), UV stabilized, 1.5 mm V-0, 3.0 mm 5VA.
Yes. Each shipment includes batch-specific COA with MFR, density, tensile, impact, color, moisture.
Samples 1–5 kg available. Please provide application, color, wall thickness.
PC-681U Related Flame Retardant Grades
Disclaimer:Disclaimer: The grades below are potential alternatives for comparison only from Chimei. They are not direct drop-in replacements. UL ratings are color- and thickness-dependent. Typical values are not specifications. All property data is from Chimei ISO TDS unless otherwise stated. Please verify current UL Product iQ status, request TDS/SDS/COA and test samples before substitution.
| Grade / Manufacturer | Positioning vs. PC-681U | UL94 (ISO TDS) | MFR | HDT | Notched Izod 23/–30°C | Color | UV / UL 746C f1 |
|---|---|---|---|---|---|---|---|
| PC-6610 Chi Mei |
Same 1.5mm V-0 + UV+f1, standard –30°C impact (15 kJ/m²) — cost-optimized option | 1.5mm V-0; 3.0mm 5VA | 10 ml/10min | 125 / 140°C | 60 / 15 kJ/m² | Opaque | UV stabilized, UL 746C f1 |
| PC-6600C Zhenjiang Chi Mei |
Similar 1.5mm V-0 + UV+f1, mainland-produced, 30 kJ/m² –30°C impact | 1.5mm V-0 | 9 cm³/10min | 125 / 134°C | 55 / 30 kJ/m² | Opaque | UV stabilized, UL 746C f1 |
| PC-6715VT Chi Mei |
Same 1.5mm V-0 + UV+f1, switched to transparent for lighting/visible housings | 1.5mm V-0 | 6 ml/10min | 125 / 140°C | 60 / 15 kJ/m² | Transparent | UV stabilized, UL 746C f1 |
↩ Back to Chimei Flame Retardant PC Resin Hub (11 grades)
Substitution checklist: Before replacing any grade, verify UL94 at the same wall thickness, UL-listed color, halogen-free declaration, MFR/MVR, HDT, notched impact, UV / UL 746C f1 and processing window.