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reggiesmotorworks
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    Mon Apr 24, 2017 9:19 am

I need to make a bracket and weld it to an exhaust system made from 409 stainless. 409 seems to be hard to come by, and I am needing to get this project done.

Is there an alternative common stainless that can be used? C

I thought about using a 300 series and brazing it on with silicon-bronze rod, but this is going to be a hanging support, so strength is a concern.

Any help is greatly appreciated.

Reggie
cj737
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    Thu Sep 29, 2016 8:59 am

I'd use 309 stainless wire and mild steel for the bracket.
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cj737 wrote:I'd use 309 stainless wire and mild steel for the bracket.
309 will work fine as a filler and be the safest, but 304 can be used without problem for the bracket/hanger.

409 can be welded quite well to 304 and 316. I have used plain 316iL filler in the past to weld 409 pipe to a 304 flange and never saw any issues.

I tend to use 304/316 hangers as I hate the crusting-and-crumbling that immediatly starts happening on mild steel exhaust parts :roll:

Bye, Arno.
cj737
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    Thu Sep 29, 2016 8:59 am

Arno wrote:
cj737 wrote:I'd use 309 stainless wire and mild steel for the bracket.
309 will work fine as a filler and be the safest, but 304 can be used without problem for the bracket/hanger.

409 can be welded quite well to 304 and 316. I have used plain 316iL filler in the past to weld 409 pipe to a 304 flange and never saw any issues.

I tend to use 304/316 hangers as I hate the crusting-and-crumbling that immediatly starts happening on mild steel exhaust parts :roll:

Bye, Arno.
Yep, that works well too.
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