What is Polyamide 46 or Nylon 46?
Date:2022-6-01 Author:hcscrew
What is PA 46?
Polyamide 46 (Nylon 46) is the highest melting point of any commercial polyamide, being a semi-crystalline aliphatic polyamide with the highest amide group density. This material also has a very high crystallinity (70%) which keeps the Young’s Modulus very high up to melting temperatures. Due to this, PA 4.6 is ideal in applications where components encounter (occasionally) high temperatures, such as in automotive parts near the engine or in electronics, where (lead-free) soldering requires high temperature resistance.
PA 46 Density 1.18 g/cm3
Glass Transition Temperature (Tg) 78 ℃
PA 46 melting point Tm 295 ℃
Processed by extrusion and injection moulding methods
PA 46 has a white, opaque surface with a glossy finish, high stiffness and strength when dry, but a great deal less when moistened. At higher temperatures, there is little difference between dry and conditioned, showing the lowest coefficient of friction, as well as the highest level of toughness and wear resistance. Its HDT at 1.8MPA is 160 ℃, and 285 ℃ when filled with 30% of glass fibers.
PA 46 has superior mechanical resistance and fatigue resistance compared to that of PA 66.
Strength
PA 46 is commonly used as a replacement for metal in high temperature applications. It has excellent tribological properties, is very fluid, so is suitable for parts with complex shapes and thin walls, and can be manufactured in a very short cycle time frame.
Limitations
PA 46 has high water absorption, less resistant to strong acids and bases, drying before processing required.
Applications
They can make (miniature) connectors, sockets for memory modules and processors, LEDs, miniature printed circuit boards, electronic and automotive components such as turbocharger inlets/intercoolers, gears, industrial transmission components, sensor encapsulation, films, belt fibers, and aerospace turbine engine components.
By understanding the melting point of PA 66, we can optimize the screw barrel structure of a PA extruder. It also helps to select the right screw barrel.
Contact HUACHEN Screw Barrel for a quote， or to speak to our expert team about the melting points of PA46 processed by extruder screws.
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