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Class 3 material is a designation of the Resistance Welding Manufacturers Alliance (RWMA). It describes a group of copper alloys with excellent strength and good electrical conductivity. Class 3 is often used to weld stainless steel, nickel alloys and other highly resistive - strong materials that require high weld forces.
Class 3 Bar Stock
Class 2 material is a designation of the Resistance Welding Manufacturers Alliance (RWMA). This is a group of copper alloys with high strength and electrical conductivity. Class 2 is the most used material in the resistance welding industry. As electrodes it is used for welding bare and coated steels.
Class 2 Bar Stock
Class 1 material is a designation of the Resistance Welding Manufacturers Alliance (RWMA) which describes a group of copper alloys with good strength and high electrical conductivity. Class 1 is often used to weld aluminum and other good conductors like brasses and bronzes which require high weld currents.
Class 1 Bar Stock
Ohm's Law is the law of physics which expains the relationship between voltage, current, and resistance in an electrical circuit. It states:
Joule's Law is the relationship between current flow through a resister for a length of time which creates heat.
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