描述
Zytel 70G50HSLR BK509 PA66 is a 50% glass fiber reinforced, heat stabilized and hydrolysis resistant polyamide 66 resin developed for demanding injection molding applications. The material is identified as PA66-GF50 and is designed to provide high rigidity, mechanical strength and dimensional control under elevated temperatures and moisture exposure.
Compared with standard PA66 and lower glass-filled grades, Zytel 70G50HSLR BK509 offers significantly higher tensile modulus, reduced molding shrinkage and improved resistance to deformation under mechanical load. Its hydrolysis-resistant formulation makes it particularly suitable for components exposed to hot water, humidity and glycol-based automotive coolant.
Typical applications include automotive cooling-system parts, thermostat housings, coolant connectors, pump housings, engine-compartment components and reinforced industrial structures where strength, heat resistance and long-term dimensional stability are required.
Shenzhen Ruiqing International Trade Co., Ltd. supplies original Zytel 70G50HSLR BK509 PA66 resin with quotation support, TDS, SDS and global delivery service.
Key Features
- 50% glass fiber reinforced PA66
- Heat stabilized formulation
- Hydrolysis resistant
- Very high stiffness
- High tensile strength
- Excellent dimensional stability
- Low molding shrinkage
- Good coolant and moisture resistance
- Reliable elevated-temperature performance
- Suitable for structural metal replacement
- Injection molding grade
Typical Applications
- Automotive cooling-system components
- Thermostat housings
- Coolant connectors
- Water-pump housings
- Engine-compartment components
- Mechanical brackets and supports
- Industrial machinery components
- Electrical equipment housings
- High-strength structural parts
Advantages
Zytel 70G50HSLR BK509 PA66 combines a high 50% glass fiber content with heat and hydrolysis stabilization, making it suitable for components exposed to mechanical stress, high temperature and coolant environments.
Its high modulus and low shrinkage support precise structural parts, while the hydrolysis-resistant formulation helps preserve mechanical properties during long-term exposure to hot water and glycol coolant. This combination makes it suitable for demanding automotive thermal-management and industrial applications.
Related Products
Typical Properties
| Property | Dry | Conditioned |
|---|---|---|
| Material | PA66-GF50 | PA66-GF50 |
| Grade | 70G50HSLR BK509 | 70G50HSLR BK509 |
| Color | Black | Black |
| Glass Fiber Content | 50% | 50% |
| Density | 1.57 g/cm³ | — |
| Viscosity Number | 150 cm³/g | — |
| Tensile Modulus | 17,000 MPa | 13,000 MPa |
| Tensile Stress at Break | 240 MPa | 170 MPa |
| Tensile Strain at Break | 2.8% | 4.0% |
| Charpy Impact Strength, 23°C | 95 kJ/m² | 100 kJ/m² |
| Charpy Notched Impact, 23°C | 16 kJ/m² | 18 kJ/m² |
| Melting Temperature | 261°C | — |
| HDT, 1.8 MPa | 255°C | — |
| Molding Shrinkage, Flow | 0.20% | — |
| Molding Shrinkage, Transverse | 0.80% | — |
| Processing Method | Injection Molding | Injection Molding |
The values above are listed in the grade-specific technical data for Zytel 70G50HSLR BK509.
Processing Recommendations
Zytel 70G50HSLR BK509 PA66 should be dried at 80°C for 2–4 hours before injection molding. The recommended processing moisture content is no more than 0.20%, with an optimum near 0.10%.
The recommended melt-temperature range is 285–305°C, with an optimum near 295°C. The recommended mold-temperature range is 70–120°C, with an optimum near 100°C. Typical holding pressure is 50–100 MPa, and the optimum residence-time range is approximately 3–5 minutes.
For official Zytel PA product information, please refer to the Celanese Zytel PA official product page .
For grade-specific processing information, please refer to the Zytel 70G50HSLR BK509 injection datasheet .
FAQ
What is Zytel 70G50HSLR BK509 PA66?
It is a 50% glass fiber reinforced, heat stabilized and hydrolysis resistant PA66 resin designed for demanding injection molded structural and automotive cooling components.
What does HSLR mean?
HSLR identifies a heat-stabilized and hydrolysis-resistant formulation intended for long-term use in hot, humid and coolant-exposed environments.
What does PA66-GF50 mean?
PA66-GF50 means polyamide 66 reinforced with approximately 50% glass fiber, providing very high stiffness, mechanical strength and dimensional stability.
Is this grade suitable for automotive coolant applications?
Yes. Its hydrolysis-resistant formulation makes it suitable for evaluating coolant connectors, thermostat housings, pump housings and other components exposed to water-glycol coolant and elevated temperatures.
What is the difference between 70G50HSLR and 70G50HSLA?
Both contain 50% glass fiber and heat stabilization, but 70G50HSLR specifically adds hydrolysis resistance for moisture and coolant exposure.
Can original Zytel 70G50HSLR BK509 PA66 be supplied?
Yes. Shenzhen Ruiqing International Trade Co., Ltd. can supply original Zytel PA66 materials with quotation, TDS, SDS and delivery support.
