The process of resistance welding makes it possible to join most metals, similar or dissimilar. Bonds of adequate strength are obtainable for an extremely wide range of applications. Selecting electrodes of the proper alloy is a most important consideration in producing good welds at the required speed. The chart below is a valuable guide to this selection.
The weldability of two materials as expressed in the following chart has been derived after careful laboratory study and field survey of many factors which influence the welding or resultant weld of the metals. The factors include:
- Thermal and electrical conductivity
- Metallurgical properties
- Nature of resultant weld or alloy
- Weld strength
- Relative accuracy in control of welding conditions necessary
The weldability of metals as shown in the chart applies only when conventional spot welding methods are used on similar thicknesses of material. However, many metal combinations which are listed as having a “poor weldability” may be satisfactorily joined by using a special setup or procedure.
There is a specific Alloy for each specific welding application. Our experienced engineers will provide assistance with special problems. Contact us today!