Hot Max 24000 Brazing Flux Powder, 8-Ounce For all types of steel, malleable and cast iron, galvanized metals, brass, and bronze This flux is used for flame brazing with either an oxy-acetylene or electric carbon arc torch Active Temperature Range: 1400 to 2200 F (760 to 1205 C) Meets AWS A5.31-91 Type FB3J Standards as well as MIL-F-16136B, Types A and B Standards Brazing Flux Powder comes in 8-Ounce container, Made in the USA