Re: Cast iron to Carbon Steel -- The Welding Forum

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Subject: Re: Cast iron to Carbon Steel

Author:
unclesyd

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Date Posted: 21:15:23 10/18/03 Sat
In reply to: Brad 's message, "Cast iron to Carbon Steel" on 14:32:12 01/28/03 Tue

If you don't know the material is for sure go with "rustbuster1's" comment on preheat. Nothing has to be precise about the temperature 200�F-300�F and after welding slow cool. If there is any doubt about welding to the casting try a little tab, 1/8"-1/4" piece of the tube or plain carbon steel on edge and weld it to some inconspicious place on the casting and when cool hit with a hammer to break it off. If it come off with base metal preheat will defiantly be required. If it breaks in the weld a little more weld metal or a different welding electrode is needed. It should not break in the tab.

Your best rod will probably be a utility rod, We used, USA, ALLSTATE 275 (essentially 312 S/S) for all this type welding.

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Replies:

Subject	Author	Date
Re: Cast iron to Carbon Steel	GRoberts	21:16:49 10/18/03 Sat
Re: Cast iron to Carbon Steel -- musashi, 21:18:07 10/18/03 Sat