Effect of manganese in 303SS
Effect of manganese in 303SS
(OP)
Most of the material standards state that the amount of manganese in 303SS should be less than 2%. We have a supplier who wants to supply '303' with >2% manganese. What is the effect if the manganese runs 0.5-1.0% high?
Thanks,
Jim
Thanks,
Jim





RE: Effect of manganese in 303SS
log[Mn]
= -9020/T+2.93ensures that nearly all the MnS precipitates as the beneficial inclusions in the liquid. Adding more Mn won't change that. As you know the corrosion resistance is nothing to write home about. Adding Mn is slightly detrimental. Does your supplier insist on adding Mo to compensate for the bad influence of sulfur? Probably not, but you should pressure him to do so. It really helps.
RE: Effect of manganese in 303SS
RE: Effect of manganese in 303SS
In your equation you typed [S], which is the part of the TGML code of this site that creates strikethrough text. In the future, you can prevent this by using ignore /ignore tags surrounding the [S].
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Effect of manganese in 303SS
RE: Effect of manganese in 303SS
Recent studies by the the american foundry society point to some of the same conclusions, however, I am not sure what you are using this material for. Ingots will contain these defects, rolled will not. Hope this helps.