The titanium flux is composed of various alkali fluorides enclosed in a petroleum-based binder. Upon heating, the solvents come off first, followed by the petroleum binder which burns. The inorganic fluorides sinter and then melt at about 540 – 595°C. When molten, the flux protects the titanium substrate from oxidation. However, the flux no longer protects the titanium against oxidation if the substrate is heated much above 815°C (cherry red).Information provided by Superior Flux |