Zytel® 70G43HSLA PA66
Celanese High-Performance Materials
Product Description
Zytel® 70G43HSLA is a high-performance, heat-stabilized Polyamide 66 (PA66) resin, reinforced with 43% glass fiber. This injection molding grade, typically available in black (BK099), is engineered by Celanese for demanding applications requiring a superior combination of mechanical strength, thermal resistance, and long-term stability.
Material Properties
The following tables provide a summary of the key properties of Zytel® 70G43HSLA, tested according to international standards.
Rheological Properties
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Melt Mass-Flow Rate (MFR) | 35 | g/10 min | ISO 1133 |
| MFR Test Temperature | 275 | °C | ISO 1133 |
| MFR Test Load | 5 | kg | ISO 1133 |
| Molding Shrinkage, Parallel | 0.3 | % | ISO 294-4, 2577 |
| Molding Shrinkage, Normal | 0.9 | % | ISO 294-4, 2577 |
Mechanical Properties (Dry as Molded)
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Tensile Modulus | 13000 | MPa | ISO 527-2 |
| Tensile Stress at Break | 210 | MPa | ISO 527-2 |
| Tensile Strain at Break | 3.5 | % | ISO 527-2 |
| Charpy Notched Impact Strength (23°C) | 17 | kJ/m² | ISO 179/1eA |
| Charpy Notched Impact Strength (-30°C) | 16 | kJ/m² | ISO 179/1eA |
Thermal Properties (Dry as Molded)
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Melting Temperature | 262 | °C | ISO 11357-1/-3 |
| Glass Transition Temperature | 80 | °C | ISO 11357-1/-2 |
| Deflection Temperature under Load (1.80 MPa) | 250 | °C | ISO 75-1/-2 |
| Deflection Temperature under Load (0.45 MPa) | 260 | °C | ISO 75-1/-2 |
Key Features
- High Mechanical Strength and Stiffness: The 43% glass fiber reinforcement significantly enhances the material's rigidity and load-bearing capabilities, making it suitable for components subjected to high stress.
- Excellent Thermal Resistance: As a heat-stabilized grade, Zytel® 70G43HSLA maintains its properties at elevated temperatures, ensuring reliable performance in thermally challenging environments.
- Outstanding Toughness: Despite its high stiffness, this material offers a good balance of toughness and impact resistance, crucial for parts that may experience sudden loads or vibrations.
- Good Chemical and Abrasion Resistance: Zytel® 70G43HSLA exhibits resistance to a wide range of chemicals, oils, and abrasive wear, contributing to its durability in harsh operating conditions.
- Processability: Designed for injection molding, this grade offers good melt stability and consistent processing characteristics.
Typical Applications
- Automotive: Its high strength and temperature resistance make it ideal for under-the-hood components such as engine covers, air intake manifolds, and transmission parts. It is also used for high-load brackets and structural components.
- Industrial: This grade is well-suited for heavy machinery parts, durable power tool housings, and components in conveyor systems that require both strength and heat resistance.
- Electrical and Electronics: Its good electrical properties and high-temperature performance allow for its use in connectors, terminal blocks, and other insulating parts.
- Consumer and Sporting Goods: The material's durability and strength are leveraged in high-performance sporting equipment and robust appliance components.
Processing Guidelines
To achieve optimal performance and part quality, the following processing parameters are recommended for Zytel® 70G43HSLA:
- Drying: It is crucial to properly dry the material before processing. Recommended drying temperature is 80°C for 2-4 hours in a desiccant dryer to achieve a moisture content of less than 0.2%.
- Melt Temperature: A melt temperature range of 285°C to 305°C is recommended.
- Mold Temperature: A mold surface temperature between 70°C and 120°C is suggested. A higher mold temperature will generally result in a better surface finish and improved dimensional stability.
- Injection Pressure: A holding pressure of 50 to 100 MPa is typically used.