PA66 Hydrolysis-Resistant
PA / Nylon
Technical Specifications
- •Excellent Hydrolysis Resistance
- •Long-Term Heat Aging
- •For Coolant Environments
Applications
Technical Data Sheet (TDS)
| Property | Typical Value |
|---|---|
| Density | 1.13 - 1.15 g/cm³ |
| Melt Flow Rate (MFR) | 10 - 30 (275°C/5kg) g/10min |
| Tensile Strength | 75 - 85 MPa |
| Elongation at Break | 15 - 25 % |
| Flexural Modulus | 2700 - 3100 MPa |
| Izod Impact Strength | 5 - 8 kJ/m² |
| Heat Deflection Temperature (HDT) | 75 - 85 (1.82MPa) °C |
| Appearance | Natural / Black Pellets |
The above data are typical values and do not constitute a specification guarantee. Please contact us for the latest product datasheet.
Processing Conditions
80 - 100°C
4 - 8 hours
260 - 290°C
70 - 100°C
70 - 120 MPa
40 - 80 MPa
2 - 5 MPa
50 - 100 rpm
- Moisture must be ≤ 0.1% before molding
Storage & Handling
PA66 is highly hygroscopic. Store sealed in a dry environment. Use within 24 hours after opening or re-dry.
Related Products
Jinsu New Material
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Product Overview
Hydrolysis-resistant PA66 is specially formulated for continuous contact with hot water, coolants and steam — environments where standard nylon 66 degrades by hydrolysis, losing strength and cracking. Our grade maintains tensile strength of 75–85 MPa and flexural modulus of 2700–3100 MPa over extended service in coolant and hot-water systems.
It is the trusted material for automotive radiator tanks, cooling-system parts, hot water valves, water pump housings and bathroom fittings, where long-term reliability in wet, hot conditions is critical. Available in natural and black pellets.
Jinsu produces hydrolysis-resistant PA66 under ISO 9001 with factory-direct pricing, free samples, low MOQ and worldwide shipping. Contact us for radiator-grade PA66 pricing and datasheets.
Applications in Detail
Radiator Tanks & Cooling System Parts
Radiator tanks and coolant lines see ethylene-glycol coolant at high temperature for the vehicle's lifetime. Hydrolysis-resistant PA66 resists the chemical attack that cracks standard PA66, maintaining strength and weld integrity in these safety-critical parts.
Hot Water Valves & Pump Housings
Hot water valves, pump housings and fittings in heating systems are exposed to hot water and steam. Our grade keeps its mechanical properties and dimensional stability, preventing leaks and failures in continuous hot-water service.
Bathroom & Plumbing Fittings
Shower heads, faucet components and plumbing fittings must resist hot water and cleaning agents for years. Hydrolysis-resistant PA66 offers durability, good surface finish and lower cost than brass in many fitting applications.
Frequently Asked Questions
Why does standard PA66 fail in coolant environments?
At elevated temperatures, water and glycol attack the amide bonds of nylon, a process called hydrolysis, which reduces molecular weight and causes cracking and strength loss. Hydrolysis-resistant grades use stabilized chemistry to slow this degradation dramatically.
How long does hydrolysis-resistant PA66 last in coolant?
Service life depends on temperature and coolant type, but hydrolysis-resistant grades typically last several times longer than standard PA66 in the same environment. Send us your operating conditions and we will confirm expected performance.
Can it be welded or vibration-welded like standard PA66?
Yes. Radiator tanks are typically vibration-welded or hot-plate welded, and our hydrolysis-resistant grade is formulated to maintain strong, leak-free weld lines over its service life.
What are the drying requirements?
Dry at 80–100°C for 4–8 hours with moisture ≤0.1% before molding, and process at 260–290°C melt temperature with mold temperature 70–100°C.