Brazing and braze welding

Brazing is a metal-joining process in which two or more metal items are joined together by melting and flowing a filler metal into the joint, the filler metal having a lower melting point than the adjoining metal.

Braze welding is the use of a bronze or brass filler rod coated with flux to join steel workpieces. Braze welding has many advantages over fusion welding. It allows the joining of dissimilar metals, minimization of heat distortion, and can reduce the need for extensive pre-heating. Additionally, since the metals joined are not melted in the process, the components retain their original shape; edges and contours are not eroded or changed by the formation of a fillet

Key standards

BS EN ISO 17672 Brazing. Filler materials

BS EN 14324 Brazing. Guidance on the application of brazed joints

BS EN 13134 Brazing. Procedure approval

BS EN 13585 Qualification test of brazers and brazing operators

BS EN 12799 Brazing. Non-destructive examination of brazed joints

BS EN 12797 Brazing. Destructive tests of brazed joints

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