Brazing flux, White. For best results, use temperatures between 1100 degrees farenheit to 1600 degrees farenheit. To heat, use torch, induction, furnance or any other form of heating. This product should not be used on metals that contain the following: aluminum, titanium, zirconium, magnesium as a primary component. This brazing flux meets the following specifications: OF-499 Type B, AMS 3410, AWS FB3-A and other military, technical and industrial specifications.