The main advantages of nylon 6 are its stiffness and resistance to abrasion. Moreover, this material has excellent impact strength, wear resistance, and electrical insulating properties. Nylon 6 is a highly elastic and fatigue-resistant material, meaning it will return to its original proportions after being distorted by tension. This polyamide is non-toxic and can be combined with glass or carbon fibers to increase performance.

Our PA66 Long Glass Fiber Reinforced Material is a high-performance thermoplastic composite developed for applications demanding superior mechanical strength, dimensional stability, and heat resistance. Ideal for metal replacement and high-load structural components.

In the automotive industry, it is used because it is cheaper and lighter than metal. In machines, it is used over other materials due to its high flexibility and durability. 

Nylon 6,6, is a more crystalline version of nylon 6. It is also referred to as polyamide 66 or PA 66. It has improved mechanical properties due to its more ordered molecular structure. Nylon 66 for machining has improved temperature resistance and lower rates of water absorption when compared to standard nylon 6.

PA6 & PA6-LGF Long Glass Fiber Reinforced Nylon PA6, also known as Nylon 6, is a high-performance polyamide widely used in engineering plastics, fibers, and films. It is a thermoplastic polymer with repeating amide groups (-NH-CO-) in the main chain, offering strong mechanical properties and versatile processing capabilities. What is PA6 Plastic? PA6 is an aliphatic polyamide that provides excellent strength, wear resistance, and chemical resistance to weak acids, alkalis, and certain organic solvents. Its lightweight and processable nature make it widely applied in fibers, engineering plastics, and thin films. However, the polar amide groups in PA6 easily form hydrogen bonds with water molecules, which can result in high moisture absorption, dimensional changes, and reduced impact strength in dry or low-temperature conditions. Advantages of PA6 High mechanical strength and toughness with excellent tensile and compressive properties Outstanding fatigue resistance, maintaining strength after repeated bending High softening point, heat resistant Low friction and wear-resistant surface Corrosion resistance to alkalis, salts, weak acids, oils, and most solvents Self-extinguishing, non-toxic, odorless, and good weather and biological resistance Excellent electrical insulation even in high humidity environments Lightweight, easy to dye, and easy to mold due to low melting viscosity Limitations of PA6 High moisture absorption (up to 3% when saturated) Poor light and thermal stability; prolonged high-temperature exposure may cause discoloration and surface cracking Strict injection molding requirements; trace moisture can affect product quality Dimensional stability is sensitive to thermal expansion and wall thickness variations Not resistant to strong acids or oxidizing agents; unsuitable for acid-resistant applications Why Reinforce PA6 with Long Glass Fiber? To overcome the natural limitations of PA6, long glass fiber (LGF) reinforcement is applied. PA6-LGF composites combine the lightweight, chemical, and heat resistance of PA6 with the mechanical strength and dimensional stability of long glass fibers. LGF reinforcement improves tensile, compressive, and flexural strength, reduces shrinkage, enhances fatigue resistance, and provides improved thermal and chemical stability. This makes PA6-LGF ideal for high-performance structural components. Applications of PA6-LGF PA6 reinforced with 30% long glass fiber (30% LGF) is widely used in: Power tool shells and components Engineering machinery parts Automobile structural and functional components The composite improves mechanical strength, dimensional stability, heat resistance, aging resistance, and fatigue resistance. Its fatigue strength can be up to 2.5x that of unreinforced PA6. Processing and Forming Tips for 30% PA6-LGF Shrinkage is reduced to ~0.3% compared with 1–1.5% for pure PA6. Excessive fiber content may cause surface floating fibers and poor compatibility. 30% LGF is recommended for balanced performance. Recycled material content should be kept below 25% to avoid color and mechanical property degradation. Gradual cooling after molding prevents warping due to fiber orientation during injection molding. Mold design, gate position, and temperature control are critical. Customers & Staffs Certificates

PA66-LGF Long Glass Fiber Reinforced Nylon PA66, or Nylon 66, is a high-performance polyamide widely used in engineering plastics. It offers excellent mechanical properties including tensile strength, flexural strength, and impact resistance, along with superior thermal and chemical stability. With lightweight, high wear resistance, good electrical insulation, and self-extinguishing properties, PA66 is ideal for automotive, electrical, industrial equipment, and construction applications. Why Reinforce PA66 with Long Glass Fiber? While PA66 is versatile, it has limitations: high water absorption, low compressive strength when wet, poor alkali resistance, and potential deformation at ultra-low temperatures. Long glass fiber (LGF) reinforcement addresses these challenges. Adding LGF significantly improves impact resistance, thermal deformation resistance, mechanical performance, molding processability, and chemical resistance. LGF acts as a robust internal skeleton, enhancing the durability and reliability of PA66 components. PA66-LGF Technical Datasheet *The datasheet is tested by Xiamen LFT and provided for reference only.* Applications of PA66-LGF PA66 reinforced with 30% long glass fiber is ideal for high-performance applications such as: Automotive components and structural parts Power tool housings and mechanical parts Industrial equipment components For specialized applications, please consult our technical team. PA66-LGF Product Details Number Color Length Sample MOQ Port of Loading Delivery Time Payment Terms PA66-NA-LGF30 Original color (customizable) 12mm (customizable) Available 25kg Xiamen Port 7-15 days after shipment Discussed Xiamen LFT Composite Plastic Co., Ltd Xiamen LFT Composite Plastic Co., Ltd. is a leading manufacturer specializing in long fiber reinforced thermoplastics (LFT & LFRT), including Long Glass Fiber (LGF) and Long Carbon Fiber (LCF) series. Our thermoplastic LFT can be applied in LFT-G injection molding, extrusion molding, and LFT-D molding. We provide products according to customer requirements with fiber lengths from 5 to 25mm. Our continuous infiltration reinforced thermoplastics have passed ISO9001 & 16949 certifications and hold numerous national patents and trademarks. Our Services Technical parameters and leading-edge design of LFT & LFRT materials Mold front design recommendations Technical support for injection molding and extrusion molding processes

Polyamide 6 (PA6) Material Polyamide 6 (PA6) has chemical and physical properties very similar to PA66. However, differences in molecular structure lead to distinct performance characteristics. PA6 features a lower melting point and a wider processing temperature window, offering better impact resistance and solubility resistance than PA66, while also exhibiting higher moisture absorption. Since many quality characteristics of plastic parts are affected by hygroscopicity, molding shrinkage is largely influenced by crystallinity and moisture absorption. Therefore, these factors must be carefully considered when designing PA6 products. Fiber-reinforced PA6 effectively reduces shrinkage and mitigates issues caused by moisture absorption. Its high crystallinity and excellent flowability contribute to improved dimensional stability and overall part performance. Datasheet Nylon products should be used with attention to dimensional deviation caused by thermal expansion and moisture absorption. Conventional PA6 also shows limited acid resistance and UV resistance. Long-term exposure to high temperatures may cause thermal oxidation, resulting in discoloration and eventual material degradation. Therefore, unmodified nylon is generally not recommended for outdoor applications. Carbon fiber reinforced modified PA6 significantly improves creep resistance, rigidity, wear resistance, and mechanical strength, enabling stable performance in outdoor and demanding environments. *Tip: Poor compatibility between carbon fiber and PA6 may lead to fiber floating and reduced mechanical properties. Xiamen LFT’s PA6 composites feature excellent fiber–matrix compatibility, effectively avoiding these issues. Advantages Strength & Durability: Excellent balance of rigidity and heat resistance Optimized Design: Superior surface appearance suitable for complex structures Excellent Processability: High flowability and thermal stability for precision molding High Thermal Stability: Reliable performance under elevated temperatures Stable Electrical Properties: Consistent insulation across wide temperature and frequency ranges Applications Long carbon fiber reinforced PA6 enhances strength, heat resistance, impact resistance, and dimensional stability, making it suitable for both industrial and consumer applications. With trends toward lightweight and compact automotive design, under-the-hood temperatures continue to rise. Carbon fiber reinforced PA6 meets these demanding requirements and is widely used in automotive engine components, electrical systems, body structures, and airbag-related parts. Due to its excellent mechanical properties, dimensional stability, heat resistance, and aging resistance, carbon fiber reinforced PA6 is also commonly applied in mechanical parts and aerospace equipment components. Long carbon fiber reinforced PA6 features high flowability, high rigidity, excellent mechanical strength, low shrinkage, creep resistance, thermal stability, wear resistance, oil resistance, uniform fiber dispersion, and good surface gloss. Typical applications include power tools, fishing equipment, automotive parts, machinery components, and office accessories. Certifications ISO 9001 & IATF 16949 Quality Management System Certification National Laboratory Accreditation Certificate Modified Plastics Innovation Enterprise REACH & RoHS Heavy Metal Compliance Factory Contact Us

Nylon 66 material for machining has improved temperature resistance and lower rates of water absorption when compared to standard nylon 6.

Long Carbon Fiber Carbon fiber exhibits outstanding properties, including extremely high axial strength and modulus, low density, and excellent specific performance. It shows no creep, outstanding fatigue resistance, excellent corrosion resistance, and maintains stability at very high temperatures in non-oxidizing environments. Carbon fiber also features good electrical and thermal conductivity, effective electromagnetic shielding, a low coefficient of thermal expansion, and strong anisotropy. Compared with traditional glass fiber, carbon fiber offers more than three times the Young’s modulus and approximately twice the modulus of aramid (Kevlar) fiber. It is insoluble and does not swell in organic solvents, acids, or alkalis, making it highly suitable for corrosive and demanding environments. One effective way to reduce the cost of carbon fiber applications is to combine it with engineering plastics such as nylon, creating high-performance composite materials with optimized cost-performance balance. As a result, carbon fiber reinforced nylon has become an important material system in modern composite engineering. Nylon itself is a high-performance engineering plastic, but it suffers from moisture absorption, limited dimensional stability, and mechanical properties far below those of metals. To overcome these limitations, fiber reinforcement has been applied since the 1970s. Carbon fiber reinforced nylon significantly improves strength, stiffness, thermal stability, creep resistance, wear resistance, and dimensional accuracy. Compared with glass fiber reinforced nylon, carbon fiber reinforced nylon offers superior damping behavior and overall mechanical performance. Therefore, carbon fiber reinforced nylon (CF/PA) composites have developed rapidly in recent years. In particular, for additive manufacturing, SLS (Selective Laser Sintering) technology is considered one of the most suitable methods for processing carbon fiber reinforced nylon materials. TDS for Reference Applications Our Company Xiamen LFT Composite Plastic Co., Ltd. is a professional manufacturer specializing in Long Fiber Reinforced Thermoplastics (LFT & LFRT), including Long Glass Fiber (LGF) and Long Carbon Fiber (LCF) series. Our LFT materials are suitable for LFT-G injection molding, extrusion processes, and LFT-D compression molding. Fiber length can be customized from 5 to 25 mm according to customer requirements. Our continuous fiber impregnation technology has passed ISO 9001 and IATF 16949 certification, and our products are protected by multiple trademarks and patents.

PA6 Material Overview PA6 (Polyamide 6) is a widely used engineering plastic with excellent balanced performance. Its raw materials are readily available and cost-effective, making it accessible without dependence on foreign technology. However, PA6 has some limitations such as high water absorption, lower low-temperature impact toughness, and moderate dimensional stability. To overcome these limitations, PA6 is often reinforced with glass fiber (GF) to enhance mechanical properties. PA6-LGF (Long Glass Fiber Reinforced PA6) 1. Influence of Glass Fiber Content Glass fiber content is a key factor in the performance of reinforced composites. Increasing fiber content increases fiber density, thinning the PA6 matrix between fibers. This enhances impact toughness, tensile strength, and bending strength. Example: For PA6-LGF, increasing fiber content to 35% raised notch impact strength from 24.8 J/m to 128.5 J/m. However, excessive fiber content can reduce impact strength. Bending strength also improves as fibers transfer stress and absorb energy when broken, with experimental results showing bending modulus up to 4.99 GPa for 35% LGF. 2. Influence of Fiber Retention Length Fiber length significantly affects mechanical properties. When fiber length is below the critical length, increasing length improves resin-fiber bonding and tensile load resistance. When fiber exceeds the critical length, longer fibers absorb more impact energy and improve impact strength, as the number of fiber ends (crack initiation points) decreases. Example: At 40% fiber content, increasing fiber length from 4mm to 13mm improved tensile strength from 154.8 MPa to 164.4 MPa, with bending strength and notched impact strength increasing by 24% and 28%, respectively. Fibers longer than 7mm enhance warping resistance and mechanical stability under high temperature and humidity. Technical Data Reference (TDS) PA6-LGF can be reinforced with 20%-60% long glass fiber depending on product requirements. Compared to unreinforced PA6, PA6-LGF offers enhanced strength, heat resistance, impact resistance, dimensional stability, and reduced warping. The following TDS shows the data for PA6-LGF30. Applications of PA6-LGF PA6-LGF is widely used in automotive, electronic/electrical, and machinery/engineering parts. Automotive Parts Lightweight and miniaturization trends promote PA6-LGF use in engines, electrical systems, and body components. Electronic & Electrical Components Excellent flame retardancy and corrosion resistance make PA6-LGF suitable for switchgear, circuit breakers, contactors, connectors, and cable protection tubes. Mechanical & Engineering Parts Good impact resistance, wear resistance, and self-lubrication properties allow PA6-LGF to be used in machinery and engineering accessories. About Xiamen LFT Composite Plastics Co., Ltd. Xiamen LFT focuses on Long Glass Fiber (LGF) and Long Carbon Fiber (LCF) reinforced thermoplastics. Our LFT materials support injection molding (LFT-G) and extrusion molding, as well as LFT-D molding, with fiber lengths from 5–25mm. Our products are ISO9001 & IATF16949 certified, patented, and widely used in automotive, electronics, industrial, and engineering applications.

Polyamide, which is also known by the trade name, Nylon, has excellent heat resistant properties, especially when combined with additives and filler materials. In addition to this, Nylon is very resistant to abrasion. Xiamen LFT offers a wide range of temperature-resistant nylons with many different filler materials. About PA66-LGF compounds Nylon 6,6, also written as nylon 6-6, nylon 66, or nylon 6/6, is a more crystalline version of nylon 6. It is also referred to as polyamide 66 or PA 66. It has improved mechanical properties due to its more ordered molecular structure. Nylon 66 for machining has improved temperature resistance and lower rates of water absorption when compared to standard nylon 6.  The advantages of nylon 6,6 are that the yield strength is higher than nylon 6 and nylon 610. It has high strength, toughness, rigidity, and low coefficient of friction in a wide temperature range. In addition, it is oil resistant and resistant to chemical reagents and solvents. However, PA66 has strong hygroscopicity and poor dimensional stability, which limits its application. In order to obtain nylon 66 engineering material with higher strength, it should be modified by glass fiber reinforcement. The mechanical properties of long glass fiber reinforced nylon 66 (LGFR-PA66) are obviously better than those of short glass fiber reinforced nylon 66 (SGFR-PA66), and the molding processing performance is also better. It can be molded by various molding methods such as injection molding and compression molding, and complex components can also be formed. Therefore, long glass fiber reinforced nylon 66 can be widely used in building materials, aerospace, electronic devices, furniture and other fields, especially in the automotive industry application market. The production process of long glass fiber reinforced nylon 66 is different from that of short glass fiber reinforced nylon 66. The short glass fiber reinforced nylon 66 particle is chopped under the friction and shearing of screw and barrel, and the short glass fiber reinforced nylon 66 particle is obtained with the length of glass fiber monofilament about 0.5mm. The length of some glass fiber monofilament in the final product is lower than the critical length of reinforcement, and the glass fiber is easy to be extracted from the nylon 66 matrix when the product is stressed. The strength of glass fiber is not fully utilized, and the mechanical properties of the product are not high. Long glass fiber reinforced nylon 66 has better reinforcement effect and dimensional stability, and the rigidity, tensile, bending, impact resistance and fatigue resistance of the manufactured products are better, and the service life is longer. Materials Details Number PA66-NA-LGF Color Natural color or Customized Length 6-25 mm Package 25kg/bag MOQ 25kg Lead time 2-15 days Port of Loading Xiamen Port Trade terms EXW/FOB/CFR/CIF/DDU/DDP About Xiamen LFT Xiamen LFT Composite Plastic Co.,LTD was established in 2009, is a brand-name global suppliers of long fiber reinforced thermoplastic materials integrating product research & developmen （R&D）, production and sale marketing. Our LFT products have passed the ISO9001&16949 system certification and have obtained lots of national trademarks and patents, covering the fields of automotive, military parts and firearms, aerospace, new energy, medical equipment, power wind energy, sports equipment, etc. LFT long fiber reinforced thermoplastic engineering materials,compared to ordinary short fiber reinforced thermoplastic materials (fiber length is less than 1-2 mm), the LFT process produces thermoplastic engineering material's fibers in lengths of 5-25 mm. The long fibers are impregnated with the resin through a special mold system to obtain long strips that are fully impregnated with the resin ,and then cut to the length as required.   The most used base resin is PP, by PA6, PA66, PPA,PA12,MXD6,PBT,TPU,PPS, ABS,PEEK, etc. Conventional fibers include glass fiber, carbon fiber. Depending on the end use, the finished products can be used for injection molding,extrusion, molding, etc., or directly used for plastic instead of steel and thermoset products.

Product number: PA12-NA-LGF Fiber specification: 20%-60% Product feature: High strength, High toughness and durability Product application: Suitable for automotive, sports parts, solar energy, photovoltaic industry and other industries.