Hiersteller musse sech un der chemescher Zesummesetzung halen fir d'ATTM A182 F11 Class 2 gläichwäerteg Grad ze produzéieren. Alloy Steel Different alloying agents used in ASTM A182 F11 RTJ flanges, such as phosphorus, silicon, nickel, carbon, manganese, chromium, molybdenum, niobium, titanium, improve fitting performance.