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medium manganese steel

medium manganese steel

medium manganese steel

(OP)
Would someone enlighten me on the specifications of 'medium manganese steel", it's one of the specifications on a cast sheave I'm working with and trying to send out to tender. Not being a metalurgist but the term 'medium' strikes me as vague, shouldn't there be a percentage in there somewhere or a more definite figure??...Mike

RE: medium manganese steel

Hmmm, you can eliminate the Hadfield alloys on this one!

Need more info here.  Do the sheaves get heat treated (hardened and tempered)?  Mn has two main purposes in Q&T steel, but for annealed steel its use it to combine with S and form relatively harmless MnS inclusions instead of FeS.

I wonder if the spec. meant a med. carbon-Mn. steel.  In any event, you probably want at least 0.60 Mn or so, but I don't know much about just what steel properties you're after.

RE: medium manganese steel

I agree with Metalguy but it may also be that the sheave is to be selectively hardened in the rope groove and the specification is to give a Mn content to help get the depth of hardening correct.  Sometiimes a steel such as 1340 type is used.

RE: medium manganese steel

One more case where the orig. poster has apparently lost interest or found an answer and didn't feel like letting us know.

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