High Carbon in 310SS

[bob330]

Hi All,

I noticed that the specification for 310SS allows up to .25 wt% carbon which is three times that of a standard grade like 304. Would it be fair to say that this alloy is extremely amenable to being sensitized during welding? Is there any information on this in the technical literature? Does anybody use this stuff as welded in corrosive environments? In what applications does this alloy tend to find use taking advantage of the higher nickel and chrome contents. I would suspect it is more resistant to chloride scc with the higher Ni content.

Thanks,
bob

 

[metengr]

In my dealings with 310 ss, it will sensitize during welding because of the increased carbon content. However, in elevated temperature service where the requirements are oxidation resistance and creep stregnth for us, sensitization is not a significant concern.

 

[rustbuster]

I have typically seen it used in high temperature applications as in flare tips, burners, pilots, etc.

 

[EdStainless]

The 310H is not meant to be used in highly corrosive environments, it is meant for high temp (creep limited) oxidation applications. If this equipment is welded the welds are either in a location where there will be no risk of aqueous corrosion, or in location that will become sensitized in service anyway.

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