AWS C3.4

This specification presents minimum fabrication and quality requirements for torch brazing material such as steels, stainless steels, copper, copper alloys, and heat or corrosion-resistant materials and other materials that can be adequately torch brazed. For the brazing of aluminum alloys refer to AWS C3.7, Specification for Aluminum Brazing. The purpose of this specification is to standardize torch brazing process requirements and control braze joint quality for all applications where braze joints of assured quality are required. This document states minimum requirements for processes and products with a minimum of explanatory information so that sources of ambiguity are reduced. It assigns responsibility for the ultimate quality of the brazed product to a single organization and permits that organization to modify requirements if appropriate to the application. It requires proper documentation of any such modifications. Units are rationalized conversions from U.S. Customary Units to SI Units and my be used interchangeably.