AWS D17.2/D17.2M:2013

This specification provides the general resistance welding requirements for aerospace hardware. It includes, but is not limited to, resistance spot and resistance seam welding of aluminum, magnesium, iron, nickel, cobalt, and titaniumbased alloys. There are requirements for machine and procedure qualification, production witness samples, and inspection and acceptance criteria for aerospace hardware.
Scope : This specification covers requirements for resistance spot and seam welding of the following metals and their alloys 1.1.1 Material Groups Group 1â??Aluminum and magnesium Group 2â??Steel, nickel, and cobalt Group 3â??Titanium 1.1.2 Classification. Classification is based on the following: Class Aâ??A welded joint, whose failure during any operating condition would cause loss of the equipment or system or one of its major components. Class Bâ??A welded joint whose failure would reduce the overall strength of the equipment or system or limit the intended functioning or use of equipment. Class Câ??A welded joint for which no stress analysis is required and whose failure would not affect the performance of the equipment or system. 1.2 Units of Measure. This standard makes use of both U.S. Customary Units and the International System of Units (SI). The latter are shown within brackets ([ ]) or in appropriate columns in tables and figures. The measurements may not be exact equivalents; therefore, each system shall be used independently.1.3 Safety. Safety and health issues and concerns are beyond the scope of this standard and therefore are not fully addressed herein. Safety and health information is available from the following sources: American Welding Society: (1) ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes (2) AWS Safety and Health Fact Sheets (3) Other safety and health information on the AWS website Material or Equipment Manufacturers: (1) Material Safety Data Sheets supplied by materials manufacturers (2) Operating Manuals supplied by equipment manufacturers Applicable Regulatory Agencies Work performed in accordance with this standard may involve the use of materials that have been deemed hazardous, and may involve operations or equipment that may cause injury or death. This standard does not purport to address all safety and health risks that may be encountered. The user of this standard should establish an appropriate safety program to address such risks as well as to meet applicable regulatory requirements. ANSI Z49.1 should be considered when developing the safety program.