Properly re-chroming and iron in a way that will be durable and last is not an easy operation you can do at home. Old chrome must be stripped off, the dings and blemishes can then be cleaned up, then the heads can be re-chromed. The Titleist is a Carbon steel head that is chromed. We did it for years, but the place we had doing it went out of business. We found another, but cost went way up and we found most folks were not willing to pay $75-$100 an iron to have it done, and wait 3-6 months. In the past we could do it for $30 a head and it would take 6 weeks. I don’t think we could ever get back to that pricing or lead time.
Stainless steel is no problem. Just needs the proper technique and belts, media, etc. to clean up and refurbish.