PlasmaBrain
- PlasmaBrain
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New Member
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Joined:Sat Mar 05, 2016 12:10 pm
Knowing what the part is used for can help sort out what kind of SS it Might be...
Welding SS without knowing what type it is can cause all sorts of problems.
If this is a critical/costly part send a bit to a lab and get a better clue of what your working with.
If its a noncritical widget and your going to have at it regardless, 309 would be a better choice.
Other choices (all potential overkill) would be 312ss, one of the inconels (625 or 82 cant remember...), or hastealloy W.
Welding SS without knowing what type it is can cause all sorts of problems.
If this is a critical/costly part send a bit to a lab and get a better clue of what your working with.
If its a noncritical widget and your going to have at it regardless, 309 would be a better choice.
Other choices (all potential overkill) would be 312ss, one of the inconels (625 or 82 cant remember...), or hastealloy W.
- Otto Nobedder
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Weldmonger
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Joined:Thu Jan 06, 2011 11:40 pm
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Location:Near New Orleans
In a marine application (non-critical), odds are very high it's 304 or 316, and both can be welded with 308 or 316.pavetim wrote:It's a fishing gaff for pulling 100lb fish up in the boat
Put a strong rare-earth magnet to it, away from a weld. 400-series will demonstrate some or much attraction, 300- series little to none.
Steve S
PlasmaBrain
- PlasmaBrain
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Joined:Sat Mar 05, 2016 12:10 pm
Ahhh got it...
309,316,308 would be the choices in order. 316 first if the hooks say anything about marine use or anything along those lines.
Good chance the hooks are a 300 series, maybe 301 or 304, 303 if they have machined features, and 316 if they are "marine" hooks.
Another check you can do with a strong rare earth magnet (has to be either a neodymium or samarium/cobalt) is that if the part is unresponsive in a "flat" area but responds at a bend is more than likely a 300 SS.
All of the 300's in common use are austenitic stainless so when its bent it forms ferrite (the iron that attracts a magnet) where its been coldworked.
309,316,308 would be the choices in order. 316 first if the hooks say anything about marine use or anything along those lines.
Good chance the hooks are a 300 series, maybe 301 or 304, 303 if they have machined features, and 316 if they are "marine" hooks.
Another check you can do with a strong rare earth magnet (has to be either a neodymium or samarium/cobalt) is that if the part is unresponsive in a "flat" area but responds at a bend is more than likely a 300 SS.
All of the 300's in common use are austenitic stainless so when its bent it forms ferrite (the iron that attracts a magnet) where its been coldworked.
