is it cast iron Chiqles? If so,
The problem you run into when welding high carbon (particularly cast iron) to stainless steel, is carbon migration. The chromium in the stainless and carbon in the steel have a very high affinity for each other at elevated temperatures. What will happen is the carbon and chromium will combine to form chromium carbide. This is a very hard, brittle material that will also rust. Essentially you’ve taken the very component in the stainless steel that prevent corrosion and entrapped it in this new material. What you will get is a weld zone that not only can look bad overtime if not painted or protected from the atmosphere, but also has a high possibility to crack and fail due to its brittleness.
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