Welding plays a vital role in the manufacturing and repair of a wide range of products and equipment. Welding two pieces of metal together helps create a powerful bond. While most welding work joins two separate pieces of a similar metal together, some applications call for two dissimilar metals to be used. Though more complicated, this process is far from impossible. Here’s what you should know.

What Dictates Whether Dissimilar Metals Can Be Welded Together?

Determining whether welding stainless steel and aluminum (or another dissimilar metal) is possible requires a fair amount of research. Welders must consider various factors regarding the chemical properties of the metals. For example, the metals must be able to be dissolved together. Susceptibility to cracking and corrosion should also be evaluated to determine if the weld will stand the test of time.

A filler metal will typically be used to facilitate the weld. This filler material will need to have the same ductility, strength, and melting point as the weaker of the two metals to ensure a successful outcome. Several different processes can be used to get dissimilar metals to melt at the same time for the weld, including ultrasonic, cold, and arc welding.

Common Issues Affecting the Welding Process

Because dissimilar metals have different melting points, getting the metals to melt and weld at the appropriate time can prove challenging. The complexity of the weld makes the process more time-consuming and expensive to ensure that it is done right.

The end result is only as strong as the weaker of the two metals. If there is too much of a strength disparity between the metals, cracks are more likely to occur in the long run. As a result, this type of weld should only be done when a specific application requires two dissimilar metals.

No matter what type of welding work you need, you can count on Brady’s Welding Specialties to get the job done. Serving Pierce County, WA, for over 40 years, their expert craftsmen’s dedication to quality work and integrity has earned an A+ Better Business Bureau® rating. To learn more about their welding services or to make an appointment, visit them online or call (253) 475-4608.