
Polylac® PA-746H High Flow Grade High Impact ABS
Polylac PA-746H is a High Flow ABS resin engineered for thin-walled, high-impact applications. With exceptional flowability (40 ml/10 min) and robust impact resistance (27 KJ/m² at 23°C), it streamlines production while ensuring durability in demanding environments.
- Application: Suitable for thin wall and high impact strength products
- Character: High flowability, high impact strength
Key technical data (ISO)
- Flowability: 40 ml/10 min (220°C, 10KG)
- Impact Strength: 27 KJ/m² (23°C, Izod) / 14 KJ/m² (-30°C, Charpy)
- Heat Resistance: Vicat 102°C (1KG); HDT 81°C (1.8MPa)
- Flammability: UL 94 HB (1.5mm)
- Shrinkage: 0.4–0.7%

Applications
- Thin-Wall Electronics: Smartphone cases, laptop frames – lightweight yet impact-resistant.
- Automotive Trim: Dashboard vents, door handles – high flow for detailed textures, durable in temperature swings.
- Appliance Components: Vacuum cleaner housings, power tool grips – resists cracking during assembly and daily use.
- Outdoor Equipment: HVAC covers, garden tool casings – maintains integrity in cold climates.

Polylac® PA-746H Datasheet
| High Flow ABS POLYLAC® PA-746H Product Description: Super high flow,High impact | ||||
| Properties | ISO Test Method | Test Condition | Unit | PA-746H |
| Melt Flow Index | 1133 | 220℃×10KG | ml/10 min | 40 |
| Mass Density | 1183 | 23 ℃ | g/cm3 | 1.03 |
| Tensile Strength | 527 | 50 mm/min, yield | MPa | 37 |
| 50 mm/min, break | MPa | 27 | ||
| Tensile Elongation | 527 | 50 mm/min | % | 40 |
| Flexural Strength | 178 | 2 mm/min | MPa | 54 |
| Flexural Modulus | 2 mm/min | GPa | 1.7 | |
| Izod Impact Strength | 180/1A | 23℃, Notched | KJ/m2 | 27 |
| -30℃, Notched | KJ/m2 | 12 | ||
| Charpy Impact Strength | 179 | 23℃, Notched | KJ/m2 | 28 |
| -30℃, Notched | KJ/m2 | 14 | ||
| Vicat Softening Temp. | 306 | 50℃/hr;1KG | ℃ | 102 |
| 50℃/hr;5KG | ℃ | 94 | ||
| Heat Distortion Temp. | 75/A | 1.8MPa, unannealed | ℃ | 81 |
| 1.8MPa, annealed | ℃ | 96 | ||
| Coefficient of Linear Thermal Expansion | 11359 | – | – | 9.2 x 10-5 |
| Flammability | – | UL-94 | – | 1.5mm HB |
| Mold Shrinkage | 294-4 | – | % | 0.4~0.7 |
| Symbol | 1043 | – | – | >ABS< |
| March 12, 2025 Notes:These are typical properties only and are not to be construed as specifications. Users should confirm results by their own test | ||||
Polylac® PA-746H UL Product iQ
| POLYLAC® PA-746H | UL Product iQ | ||
| File Number: E56070 | Yellow Card™ | Acrylonitrile Butadiene Styrene (ABS) “POLYLAC”, furnished as pellets |
| FLAMMABILITY PROPERTIES | VALUE | TEST METHOD |
| Flammability | ANSI/UL 94 | |
| 1.6 mm, Color: ALL | HB | |
| 3.0 mm, Color: ALL | HB | |
| ISO/IEC FLAMMABILITY PROPERTIES | VALUE | TEST METHOD |
| Flammability | IEC 60695-11-10 | |
| 1.6 mm, Color: ALL | HB75 | |
| 3.0 mm, Color: ALL | HB40 | |
| ELECTRICAL PROPERTIES | VALUE | TEST METHOD |
| Hot-wire Ignition (HWI) | UL 746A | |
| 1.6 mm | PLC 5 | |
| 3.0 mm | PLC 4 | |
| High Amp Arc Ignition (HAI) | UL 746A | |
| 1.6 mm | PLC 0 | |
| 3.0 mm | PLC 0 | |
| Comparative Tracking Index (CTI) | PLC 0 | UL 746A |
| High Voltage Arc Tracking Rate (HVTR) | PLC 2 | |
| High Voltage, Low Current Arc Resistance | PLC 6 | |
| THERMAL PROPERTIES | VALUE | TEST METHOD |
| Relative Thermal Index – Electrical Strength | UL 746B | |
| 1.6 mm | 60 °C | |
| 3.0 mm | 60 °C | |
| Relative Thermal Index – Mechanical Impact | UL 746B | |
| 1.6 mm | 60 °C | |
| 3.0 mm | 60 °C | |
| Relative Thermal Index – Mechanical Strength | UL 746B | |
| 1.6 mm | 60 °C | |
| 3.0 mm | 60 °C | |
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