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Any idea what metal this is? Welding options? Any idea what metal this is? Welding options?
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Old 05-03-2018, 10:14 AM
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The four hundred series stainless is an alloy of Chrome and steel and very little nickel, if any. The nickel is what reduces oxidation and causes the non-magnetic quality of 300 series stainless steel.

Weld it and coat it with paint.
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Old 05-03-2018, 01:41 PM
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Weld it and coat it with paint.
If I did this, do I need to worry about rust on the inside?
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Old 05-04-2018, 10:08 AM
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If I did this, do I need to worry about rust on the inside?
If you're concerned you could always coat it with POR-15 before you button it up and install it: https://www.por15.com/POR-15-Fuel-Tank-Repair-Kit
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Old 05-26-2018, 09:09 PM
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Originally Posted by cycleguy55 View Post
If you're concerned you could always coat it with POR-15 before you button it up and install it: https://www.por15.com/POR-15-Fuel-Tank-Repair-Kit
I really like por15 paint, but be skeptical of any gas tank sealer currently available to consumers. In my other life (vintage motorcycles) I've come to the conclusion that sealants fail most of the time and make a big mess.

Recommend PURGE the tank with argon (not co2) and tig weld. Inert purge prevents any scale from forming inside the tank. Good luck.
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