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mleder · 08-29-2010, 09:32 PM

Regarding the post by Kevin: I have in the past been able to use an XRF analizer to determine the alloy type of the Model A shell.The original shells that I have are a 304 type alloy. The have a typical average of 8% Nickel and No real % of Moly in the alloy make up. You say you have welded on the shells with a 318 alloy. This alloy have typical average of 5% Nickel and an average of 2.5 Moly as well as a higher % of chrome. I'm not a welding expert but I thought you would get a better result color wise and preformance wise for a cosmetic weld on a shell with the material that was the same as the shell it self. Have you ever repaired a shell with a 304 type alloy? If so was the result worse than your work with the 308 alloy? I have the interest in this for the fact that I buy and sort various stainless and other high alloy items for a living.

08-29-2010, 09:32 PM	#9
mleder Senior Member Join Date: May 2010 Posts: 180	Re: Tig welding a Model A Regarding the post by Kevin: I have in the past been able to use an XRF analizer to determine the alloy type of the Model A shell.The original shells that I have are a 304 type alloy. The have a typical average of 8% Nickel and No real % of Moly in the alloy make up. You say you have welded on the shells with a 318 alloy. This alloy have typical average of 5% Nickel and an average of 2.5 Moly as well as a higher % of chrome. I'm not a welding expert but I thought you would get a better result color wise and preformance wise for a cosmetic weld on a shell with the material that was the same as the shell it self. Have you ever repaired a shell with a 304 type alloy? If so was the result worse than your work with the 308 alloy? I have the interest in this for the fact that I buy and sort various stainless and other high alloy items for a living.