Welding Dissimilar Metals Together. Joining dissimilar metals is very difficult especially when the thermal conductivity of each is substantially different. Welding is the process of combining two pieces of metal.
If youre new to the topic you may be wondering if welding equipment can combine two different metals. And use the correct welding preheat and interpass temperatures for the application. When one metal is signifi-cantly weaker than the other.
Well the idea isnt that they cannot be welded together because welding is essentially melting two materials together.
For example aluminium and steel are a popular combination. A successful weld between dissimilar metals is one that is as strong as the weaker of the two metals being joined ie possessing sufficient tensile strength and ductility so that the joint will not fail in the weld. The type of welding typically used for dissimilar metals is fusion welding which welders also use for joining similar metals. Steel is a strong cheap and easy-to-work with metal so is often the go-to choice for many industries such as the automotive sector.