RWMA resistance welding electrode material choice table

Published on:

2020-03-25 15:38

Author:

Ervin

Resistance Welding Manufacturing Alliance (RWMA) is an active network of industry professionals that advances resistance welding technologies, supports the highest technical standards for the industry and shares best practices amongst all its members in order to shape the future of our industry for the next generation. Promoting the technology by educating the manufacturing community in documented processes, standards and advancements are critical to keeping resistance welding at the forefront of automotive, aerospace and industrial manufacturing. HOSO Join RWMA in May. 2016.

RWMA	HOSO code	Application and Description
Class 2	HOSOCU®202 Chromium Zirconium copper	Better Hardness than HOSOCU®201 but lower electrical conductivity, common used for the spot and seam welding of cold and hot-rolled steel, stainless steel and low conductivity brass and bronze. They are also used as flash welding dies and as electrodes for the welding of galvanized steel and other coated materials.
Class 2	HOSOCU®203 Chromium copper	Same application as HOSOCU®202, less loading capability.
Class 3	HOSOCU®302 Cobalt-beryllium copper	Very high hardness use for the high loading spot and seam welding. Such as stainless steel, chrome and monel metal.
Class 3	HOSOCU®303 Beryllium-free copper
Class 4	HOSOCU®400 Beryllium copper	For extremely high loading application.

RWMA resistance welding electrode material choice table

Group A: copper base material

Group B: No-ferrous metal

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