PA 757

PA-757, a robust grade within CHIMEI Corporation’s distinguished Polyamide 6 (PA6) portfolio, is engineered to provide an outstanding balance of mechanical strength, stiffness, and toughness, coupled with excellent heat resistance and reliable processability. This versatile Nylon 6 resin is ideal for manufacturers seeking a dependable material solution for a wide range of demanding industrial, automotive, electrical, and consumer product applications.

Developed through CHIMEI’s stringent quality control and advanced polymer expertise, PA-757 ensures consistent performance, enabling the efficient production of durable and high-performing components even under challenging conditions.

Key Features & Benefits:

• Exceptional Balance of Properties: Offers a strong combination of high tensile strength, rigidity, and superior impact resistance, ensuring robust and long-lasting components capable of withstanding various stresses.
• Good Heat Resistance: Possesses reliable thermal properties, making it suitable for applications exposed to elevated temperatures.
• Excellent Wear & Abrasion Resistance: Provides extended durability in dynamic applications involving friction, such as gears and bearings.
• Good Chemical Resistance: Resists a wide range of chemicals, including oils, fuels, greases, and many common solvents, contributing to product longevity.
• Good Fatigue Resistance: Maintains integrity and performance under repeated stress or cyclic loading, ensuring reliability in dynamic systems.
• Reliable Processability: Designed for efficient processing via injection molding, offering a good balance of flow and melt strength for diverse part geometries.
• Good Electrical Insulation Properties: Suitable for various electrical and electronic components requiring insulation and mechanical strength.

Typical Applications:

CHIMEI PA-757 is highly recommended for versatile manufacturing processes, primarily injection molding, across numerous industries:

• Automotive Industry: Connectors, housings, clips, fuel system components, and various under-the-hood applications requiring good mechanical and thermal properties.
• Electrical & Electronics: Switches, relays, terminal blocks, power tool housings, and other components demanding strength and insulation.
• Industrial Applications: Gears, bearings, rollers, pump impellers, and other machinery parts requiring high mechanical performance and wear resistance.
• Consumer Goods: Appliance components, durable household items, and sports equipment.
• General Industrial Molded Parts: A strong choice for a broad spectrum of rigid, tough, and heat-resistant components.

Typical Properties (Representative Values for a General Purpose Unfilled Grade):

Please note that specific values may vary slightly depending on the exact production batch, testing conditions, and any specific modifications. Always refer to the official Technical Data Sheet (TDS) from CHIMEI Corporation for the most accurate and up-to-date information for the specific grade you require.

• Melt Flow Rate (MFR) (230°C / 2.16 kg): 10 – 15 g/10 min (ISO 1133)
• Density: ~1.13 – 1.14 g/cm³ (ISO 1183)
• Tensile Strength @ Yield: 55 – 75 MPa (ISO 527-2)
• Flexural Modulus: 2000 – 2800 MPa (ISO 178)
• Notched Izod Impact Strength (23°C): 4.5 – 9.0 kJ/m² (ISO 180)
• Heat Deflection Temperature (HDT) (1.8 MPa, unannealed): 60 – 75 °C (dry as moulded) (ISO 75-2/A)
• Water Absorption (Saturation, 23°C): ~8.0 – 10.0 % (ISO 62)

Processing Guidelines (Injection Molding – General):

• Drying: Essential for Nylon 6 to prevent hydrolysis and ensure optimal mechanical properties and surface finish. Recommended conditions: 80 °C for 4 – 6 hours in a desiccant dryer, to a moisture content of <0.1%.
• Melt Temperature: 230 – 270 °C (optimize based on machine type, mold design, and part thickness).
• Mold Temperature: 50 – 90 °C (higher mold temperatures generally improve surface finish, reduce internal stress, and improve crystallinity).
• Injection Pressure: 80 – 120 MPa (adjust for part geometry and fill).
• Holding Pressure: 50 – 80% of injection pressure.

Packaging & Storage:

CHIMEI PA-757 resins are supplied in standard, moisture-proof packaging (e.g., 25 kg bags, supersacks). For optimal product integrity and to prevent moisture absorption, store in a dry, cool environment, away from direct sunlight and heat sources. Keep packaging sealed until immediately prior to use.

For detailed technical specifications, safety data sheets (SDS), and specific application support for CHIMEI PA-757, please contact your CHIMEI Corporation representative or your local authorized distributor, such as Ravago Lanka (Pvt) Ltd for customers in Sri Lanka.

Hot Line : +94 77 6274625 /+94 714816833 / +94 705816883/+94 71 3090813