AWS C3.12M/C3.12:2017

This specification provides the minimum requirements for equipment, materials, processing procedures as well as inspection for metal and ceramic base materials that can be furnace soldered. This specification provides criteria for classifying furnace soldered joints based on loading and the consequences of failure. It also provides quality assurance criteria that define the limits of acceptability in each class. This specification describes acceptable furnace soldering equipment, materials, and procedures, as well as the required inspection for each class of solder joint so produced
Scope : 1.1 Scope. This specification presents the minimum fabrication and quality requirements for the furnace soldering of materials that include elemental metals, metal alloys, and ceramic base materials that are in geometries that suit the application. The purpose of this specification is to standardize furnace soldering process requirements that will assure that the solder joints attain the quality level designated by the application. This document establishes the minimum such requirements. It also provides explanations with details to prevent ambiguity within the descriptions. This document assigns responsibility for solder joint quality to the Organization Having Quality Responsibility and permits that organization to modify requirements as necessary. All such modifications shall be in writing. It assigns responsibility for the ultimate quality of the soldered 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. 1.2 Units of Measurement. This standard makes use of both the International System of Units (SI) and U.S. Customary Units. The latter are shown in brackets ([ ]) or in appropriate columns in tables and figures. The measurements may not be exact equivalents; therefore each system must be used independently. 1.3 Safety. Safety and health issues and concerns are beyond the scope of this standard; some safety and health information is provided, but such issues are not fully addressed herein