This Standard specifies the processing and quality assurance requirements for brazing processes for space flight application. Brazing is understood as the joining and sealing of materials by means of a solidification of a liquid filler metal. The term brazing in this standard s is used as equivalent to soldering, in cases that the filler materials have liquidus temperatures below 450 °C. Brazing and soldering are allied process to welding and this standard is supplementing the standard for welding ECSS-Q-ST-70-39. This standard does not cover requirements for: " Joining processes by adhesive bonding (ECSS-Q-ST-70-16), " Soldering for electronic assembly purposes (ECSS-Q-ST-70-61), " Soldering used in hybrid manufacturing (ESCC 2566000). The standard covers but is not limited to the following brazing processes: " Torch brazing, " Furnace brazing, " Dip Brazing and Salt-bath brazing, " Induction Brazing. This Standard does not detail the brazing definition phase and brazing pre-verification phase, including the derivation of design allowables. This standard may be tailored for the specific characteristic and constraints of a space project in conformance with ECSS-S-ST-00.