SAE AMS 5570Q
This specification covers a corrosion and heat resistant steel in the form of seamless tubing.This tubing has been used typically for parts requiring both corrosion and heat resistance, especially when such parts are welded during fabrication, and also for parts requiring oxidation resistance up to 1500 degrees F (816 degrees C) but useful at that temperature only when stresses are low; usage is not limited to such applications.