ChiMei POLYLAC® PA-757 ABS is a premium injection molding grade ABS resin produced by ChiMei Corporation. It delivers an exceptional balance of high gloss, excellent flowability, and robust mechanical strength, making it the ideal material for appliance housings, consumer electronics, and automotive parts.
| Manufacturer | Chimei |
|---|---|
| Density | 1.05 g/cm³ |
| MVR | 19 cm³/10 min |
| Tensile Strength at Yield | 47 MPa |
| Tensile Strength at Break | 34 MPa |
Note: See the product description for additional technical specifications
ChiMei POLYLAC® PA-757 ABS is a high-quality acrylonitrile-butadiene-styrene (ABS) copolymer resin produced by ChiMei Corporation, a globally renowned petrochemical enterprise. Supplied in the form of premium pelletized materials, it belongs to the high-performance injection molding grade within ChiMei’s flagship POLYLAC® series.
As a benchmark ABS raw material in the industry, PA-757 enjoys an outstanding reputation in the global plastics processing and injection molding manufacturing sectors, renowned for its exceptional batch-to-batch consistency, excellent flowability, and balanced mechanical strength. It is widely used in the manufacturing of industrial and consumer goods that require high gloss, superior surface finish, and precise dimensional control, making it a preferred material for molders and brand owners both domestically and internationally.
| Physical Property | Value | Unit | Test Standard |
| Density 23 °C | 1.05 | g/cm³ | ISO 1183 |
| Melt Volume-Flow Rate 220 °C, 10 kg | 19 | cm³/10 min | ISO 1133 |
| Molding Shrinkage | 0.4-0.7 | % | ISO 294-4 |
| Mechanical Property | Value | Unit | Test Standard |
| Tensile Stress, Yield 50 mm/min | 47 | MPa | ISO 527 |
| Tensile Stress, Break 50 mm/min | 34 | MPa | ISO 527 |
| Tensile Strain 50 mm/min | 70 | % | ISO 527 |
| Flexural Strength 2 mm/min | 76 | MPa | ISO 178 |
| Flexural Modulus 2 mm/min | 2200 | MPa | ISO 178 |
| Charpy Notched Impact Strength 23 °C | 19 | kJ/m² | ISO 180/1A |
| Charpy Notched Impact Strength -30 °C | 9 | kJ/m² | ISO 180/1A |
| Izod Notched Impact Strength 23 °C | 21 | kJ/m² | ISO 179/1eA |
| Izod Notched Impact Strength -30 °C | 10 | kJ/m² | ISO 179/1eA |
| Thermal Property | Value | Unit | Test Standard |
| Heat Deflection Temperature, Unannealed 1.8 MPa | 83 | °C | ISO 75/A |
| Coefficient of Linear Thermal Expansion (CTE) | 8.60E-05 | cm/cm/°C | ISO 11359 |
| Flammability Rating 1.5 mm | HB | — | UL 94 |
| Vicat Softening Temperature 50 °C/h, 1 kg | 100 | °C | ISO 306 |
| Vicat Softening Temperature 50 °C/h, 5 kg | 104 | °C | ISO 306 |
The technical data sheet (TDS) of ChiMei POLYLAC® PA-757 ABS material from ChiMei Corporation, if there are differences, please refer to the official website of ChiMei Corporation.
Exceptional Flowability: An outstanding melt mass-flow rate performance (19 cm³/10 min) endows the material with excellent mold-filling capability, making it exceptionally well-suited for the molding and processing of complex structures, thin-walled, and large-sized injection parts.
High Gloss and Superior Surface Quality: The surface smoothness of molded finished parts is extremely high, capable of presenting a brilliant mirror or matte texture, thereby reducing subsequent surface finishing operations.
Balanced Mechanical Strength: Combining high tensile strength, bending performance, and favorable impact toughness (room temperature notched impact reaches 19 kJ/m²), it ensures that final products possess outstanding structural robustness.
Good Dimensional Stability: Molding shrinkage is controlled within the 0.4%-0.7% range, which effectively minimizes warpage and distortion while safeguarding the assembly precision of precision components.
Convenient Processing Adaptability: It demonstrates great compatibility with conventional injection molding equipment across a wide processing window with a low scrap rate, helping manufacturers effectively manage overall production costs.
Driven by its balanced physical-mechanical properties and stellar surface presentation, ChiMei POLYLAC® PA-757 ABS serves a diverse range of mainstream industrial and consumer goods sectors:
Appliance Housings and Internal Components: Widely utilized in air conditioner panels, washing machine parts, refrigerator interior linings, and exterior decorative parts for various small household appliances.
Consumer Electronics and Digital Products: Suitable for mobile phone housings, computer peripheral accessories, audio speaker enclosures, and structural support components for various electronic instruments.
Automotive Components: Frequently applied in automotive interior trim components, instrument cluster assemblies, center console trim panels, and exterior minor vehicle body components.
Toys and Daily Consumer Goods: Given its safety profile, ease of coloring, and high gloss, it serves as an ideal material for premium toys, stationery supplies, and everyday plastic articles.
Q1: Is drying treatment mandatory before injection molding processing of ChiMei PA-757?
A1: Yes, performing drying prior to processing is strongly recommended. Although ABS has a relatively low moisture absorption rate, surface moisture absorbed by the raw material can easily lead to surface silver streaks, bubbles, or visual defects during high-temperature injection molding. It is typically recommended to bake the material in a hot-air circulating drying oven at 80–85 °C for 2–4 hours, maintaining moisture content below 0.1%.
Q2: Compared to general-purpose PS or SAN, what are the core advantages of PA-757 ABS?
A2: Relative to GPPS (General Purpose Polystyrene) or SAN resins, the primary advantage of PA-757 ABS lies in its significant enhancements in impact toughness and comprehensive mechanical strength. While GPPS and SAN offer better clarity or rigidity, they tend to be brittle; in contrast, ABS introduces a butadiene rubber phase that maintains good rigidity while imparting exceptional impact and drop-resistance capabilities, making it better suited for housing-class products exposed to mechanical stresses.
Q3: Does this material comply with environmental and international regulatory certification standards?
A3: Yes. ChiMei POLYLAC® PA-757 ABS strictly conforms to international environmental and safety standards, fulfilling the restrictive substance control requirements of the European Union RoHS directive and REACH regulation. Specific Certificate of Analysis (COA) factory reports, original Technical Data Sheets (TDS), or Material Safety Data Sheets (MSDS) can be requested from the supplier to satisfy export and end-client compliance audit requirements.
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