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Shanghai Yunshan Plasticizing Co., Ltd., a specialized plastics supplier based in Shanghai, China, proudly offers the Asahi Kasei POM 4520 material, engineered specifically for demanding medical device applications. This high-performance polymer is the cornerstone for creating mechanisms that require exceptional durability, reliability, and smooth operation over extended periods. We provide this critical material directly to manufacturers seeking to enhance the longevity and performance of their medical equipment components.
The core value of POM 4520 lies in its balanced portfolio of properties that address the unique challenges of medical device mechanisms. It is not merely a plastic; it is a solution for friction, wear, and repeated stress.
Detailed Product Characteristics & Advantages:
Superior Wear Resistance & Low Friction: The inherent low coefficient of friction and high hardness of POM 4520 minimize wear in gears, bearings, slides, and cam mechanisms. This translates directly to smoother operation, reduced noise, and maintained precision over millions of cycles.
Excellent Fatigue Life and Creep Resistance: Mechanisms are often subject to repeated loading. POM 4520 exhibits outstanding resistance to fatigue failure and creep under constant load, ensuring the component shape and function remain stable for the long term, a critical factor for life-critical devices.
High Rigidity and Strength: It provides the necessary stiffness to maintain dimensional accuracy under operational forces, while offering good tensile and flexural strength to withstand unexpected stresses.
Good Chemical Resistance: Resistant to many common chemicals, solvents, and sterilants used in medical environments, contributing to the material's stability and longevity.
Predictable Processing: Asahi Kasei's 4520 grade is known for its consistent melt flow and stable shrinkage, allowing for precise and repeatable injection molding, which is essential for producing complex, high-tolerance mechanism parts.
Technical Specifications Overview (Typical Values):
| Property | Test Method | Typical Value | Unit |
| Tensile Strength | ASTM D638 | 60 | MPa |
| Flexural Modulus | ASTM D790 | 2800 | MPa |
| Impact Strength (Izod) | ASTM D256 | 80 | J/m |
| Coefficient of Friction (Dynamic) | - | 0.2 - 0.3 | - |
| Melting Point | - | ~165 | °C |
Note: Specific values can vary based on processing conditions. Full datasheet is available upon request.
For medical device OEMs, the benefits are clear: extended device service life, reduced maintenance needs, enhanced patient safety through reliable operation, and potential cost savings from fewer component failures. Choosing POM 4520 is an investment in the reliability of your product.
Frequently Asked Questions (FAQ):
Q1: What makes POM 4520 suitable for "long-life" medical mechanisms compared to standard POM? A: The 4520 grade is specifically formulated with a focus on fatigue resistance and wear performance. It maintains its mechanical properties under cyclic loading for a longer duration, which is the defining requirement for mechanisms in devices like infusion pumps, surgical tools, or diagnostic equipment that operate repeatedly.
Q2: Can this material be used for components that contact bodily fluids or drugs? A: POM 4520 has good chemical resistance to many substances. However, final suitability for direct contact with specific fluids or drugs must be validated by the device manufacturer according to their application requirements and regulatory guidelines. Material compatibility data is available for consultation.
Q3: Is it compatible with common medical device sterilization methods? A: POM generally withstands gamma radiation and ethylene oxide (EtO) sterilization well. Autoclaving (high-temperature steam) is typically not recommended due to the material's thermal limits. Specific sterilization protocol testing should be conducted for critical applications.
Q4: What are the typical molding considerations for POM 4520? A: It requires precise temperature control and adequate mold venting due to its relatively sharp melting point and potential for gas release. Using hot molds can improve surface finish and reduce internal stresses. Our team can provide basic processing guidelines.
Q5: Do you offer this material in different colors or with additives? A: The standard form is natural white/off-white. Color masterbatches can be added for custom coloring. Additives like stabilizers or lubricants are available upon request, but any modification must be evaluated for its impact on the core mechanical properties.
Q6: How does the cost compare to other engineering plastics for medical mechanisms? A: POM 4520 offers a favorable balance of performance and cost. While premium in its category, it often presents a more economical solution than high-end specialty polymers, while outperforming many standard plastics, leading to potential total cost savings over the device lifecycle.
Q7: Can you supply technical data sheets and support for material selection? A: Yes. Shanghai Yunshan Plasticizing provides comprehensive technical documentation from Asahi Kasei. We also offer consultative support to help you evaluate if POM 4520 is the optimal choice for your specific mechanism design.
Q8: What is the typical packaging and lead time for orders? A: Material is typically supplied in sealed bags on pallets. Lead times depend on order quantity and current stock levels, which we can confirm upon inquiry. We strive to ensure reliable supply for our manufacturing clients.
As your partner in Shanghai, Shanghai Yunshan Plasticizing Co., Ltd. connects you directly to this high-quality material source. We understand the critical nature of medical device manufacturing and provide the Asahi Kasei POM 4520 not just as a commodity, but as a key component for your success. By choosing this material, you are selecting a proven solution for durability and performance.
We encourage medical device engineers and procurement specialists to reach out for samples, detailed specifications, or to discuss your specific application needs. Let us help you build mechanisms that last.
Send Inquiry to This Supplier
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