This specification covers molded or extruded bar, rod, and shapes produced from a polyamide-imide (PAI) polymer filled with 30% glass fiber. This is designated as Grade 4 material per AMS3670.
SAE AMS3670/4D-2021 history
2021SAE AMS3670/4D-2021 Bar, Rod, and Shapes Produced from 30% Glass Fiber Filled Polyamide-Imide (PAI) Material