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Help CenterAsahi Kasei Leona FR370 PA66, Flame Retardant, Low Warpage Compound for Precision Parts
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Trusted Source for Asahi Kasei Leona FR370 PA66
Suzhou Yifuhui New Material Co., Ltd., a dynamic trading company established in 2020, proudly presents the Asahi Kasei Leona FR370 PA66 compound. This flame-retardant, low-warpage grade has been engineered for precision parts that demand exceptional dimensional stability and reliable fire safety. As a specialized supplier in the engineering plastics sector, we provide this high-performance material to manufacturers seeking consistent quality and traceable sourcing. With an annual export value of US$10-50 million, we are committed to delivering authentic, factory-backed resin solutions to clients worldwide.
Leona FR370 is a glass-fiber reinforced PA66 (polyamide 66) compound developed by Asahi Kasei, one of the world's leading chemical manufacturers. It combines outstanding flame-retardant properties with significantly reduced warpage, making it an excellent choice for intricate components such as connectors, relays, coil bobbins, and switch housings. This grade offers superior mechanical strength, excellent electrical insulation, and robust heat aging resistance, even in thin-wall sections. For B2B buyers seeking a dependable material for demanding applications, FR370 provides a balanced portfolio of processing efficiency and end-use reliability.
Key Features & Benefits
Flame Retardant Performance: Meets standard flame-retardant requirements (V-0 class achievable at typical test thicknesses), enabling safer end-products for electrical and electronic applications.
Low Warpage Design: Formulated to minimize anisotropic shrinkage, ensuring precise part geometry and better dimensional control during injection molding.
Excellent Mechanical Strength: Glass-fiber reinforcement delivers high tensile strength and stiffness, suitable for load-bearing structural components.
High Flowability: Optimized melt viscosity improves mold filling for complex shapes without sacrificing surface finish.
Heat Resistance: Retains stable performance under elevated thermal loads, supporting long-term reliability in hot environments.
Electrical Properties: Superior insulation resistance and dielectric strength protect sensitive electronic assemblies.
Surface Appearance: Allows for clean, consistent part aesthetics with minimal flow marks.
Technical Specifications (Typical Data)
| Property | Value / Unit |
| Density | 1.40–1.44 g/cm³ |
| Tensile Strength (at break) | 90–120 MPa |
| Flexural Modulus | 8,000–11,000 MPa |
| HDT (1.8 MPa) | 230–250 °C |
| Flammability | V-0 (test-dependent) |
| Mold Shrinkage (parallel) | 0.2–0.5 % (typical) |
| Mold Shrinkage (transverse) | 0.4–0.8 % (typical) |
Note: The values above are typical data for general reference. Customers should conduct their own testing to verify suitability for specific applications.
Why Choose Suzhou Yifuhui for Leona FR370?
We specialize in sourcing and supplying genuine Asahi Kasei Leona materials from reliable channels. As a trading company with a global reach, we understand the importance of supply continuity and consistent quality. Our annual export value of US$10-50 million reflects built-in trust from clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and the domestic Chinese market. We ship efficiently through major ports including Shanghai, Ningbo, and Qingdao, ensuring on-time delivery for your production schedule. Our team is ready to provide technical support, customized packaging options, and dynamic inventory solutions to meet your procurement needs.
Applications
Automotive connectors and fuse boxes
Electronic components: relays, sensors, switches
Electrical housings and bobbins
Precision mechanisms in office automation equipment
Industrial control parts and structural components
Processing Guide
Leona FR370 is processed via standard injection molding. Pre-drying is essential to avoid splay and surface defects. Recommended drying conditions are approximately 80–90°C for 3–4 hours using a dehumidified hopper dryer. Melt temperatures typically range from 270–290°C, with mold temperatures around 80–100°C. A balanced gate and runner design is suggested to fully leverage the low-warpage performance of this grade.
Conclusion
Asahi Kasei Leona FR370 PA66 is a proven flame-retardant, low-warpage compound that enhances the reliability and safety of precision parts. Suzhou Yifuhui New Material Co., Ltd. has the sourcing capability, export experience, and customer-oriented service to be your long-term provider. With more than four years in the industry, we have built solid relationships with trusted upstream suppliers and downstream clients. We invite you to request a quotation or sample to evaluate how FR370 can add value to your products. Contact us today for a fast, professional response and tailored logistics support.
Frequently Asked Questions (FAQ)
1. What is the difference between FR370 and standard PA66?
FR370 is a flame-retardant grade containing glass-fiber reinforcement and advanced additives that lower flammability and reduce warpage. Standard PA66 generally has higher smoke and more pronounced warpage, making FR370 preferable for electrical and precision applications.
2. Can FR370 be recycled or reused?
Like most thermoplastics, regrind can be used in low percentages (usually 10–20%) when blended with virgin material, provided that the mechanical and flame-retardant properties still meet your performance criteria. Always test mixed batches to confirm consistency.
3. Does FR370 require special drying before molding?
Yes. PA66 absorbs moisture, and insufficient drying leads to hydrolysis and surface defects. We recommend drying at 80–90°C for 3–4 hours in a dehumidified dryer to achieve a moisture content below 0.2%.
4. What colors are available for Leona FR370?
Natural (uncolored) and black are commonly available. Custom color matching is possible depending on order volume; please contact our team for color options and lead times.
5. What are the benefits of low warpage in precision parts?
Low warpage means the part retains its intended shape after cooling, which directly improves dimensional tolerances. This is critical for connectors, housings, and components that must mate precisely with other parts.
6. Is Leona FR370 halogen-free?
Asahi Kasei's Leona flame-retardant grades include formulations that are halogen-free, but the specific classification may vary by grade. For detailed regulatory and material data, we can provide official technical datasheets upon request.
7. How is the flame retardancy tested?
Typically, the UL94 test method is used to classify materials as V-0, V-1, or V-2, depending on burn time and dripping behavior. The exact rating depends on specimen thickness and part geometry. We recommend checking the official datasheet or testing your specific part design.
8. What packaging and MOQ do you offer?
Standard packaging is 25 kg bags, but we can customize palletization and packaging on request. The minimum order quantity may vary based on inventory availability and logistics—please inquire with our sales team for current MOQ.
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