Nitronic 50 for Stems and NACE0175-3
Nitronic 50 for Stems and NACE0175-3
(OP)
Peers,
We are Choke valve manufacturer and use Nitronic 50 for Choke Stems. It is governed by Table A.3 in NACE0175-3. However, Table A.3 allows/mentions only 1 supply condition as solution annealed followed by cold working to a max 35HRC.
Steel mills doesn't supply solution annealed and cold rolled Nitronic 50 as they could easily exceed 35HRC. It is commonly supplied as hot rolled or TMCP. The problem is Table A.3 in nace and it doesn't state if any other condition is acceptable other than cold work.
Is this how other user's interpret this table A.3? I have put in a query to NACE, but could take months to get a reply. any suggestions, thanks.
We are Choke valve manufacturer and use Nitronic 50 for Choke Stems. It is governed by Table A.3 in NACE0175-3. However, Table A.3 allows/mentions only 1 supply condition as solution annealed followed by cold working to a max 35HRC.
Steel mills doesn't supply solution annealed and cold rolled Nitronic 50 as they could easily exceed 35HRC. It is commonly supplied as hot rolled or TMCP. The problem is Table A.3 in nace and it doesn't state if any other condition is acceptable other than cold work.
Is this how other user's interpret this table A.3? I have put in a query to NACE, but could take months to get a reply. any suggestions, thanks.





RE: Nitronic 50 for Stems and NACE0175-3
My interpretation is that as long as your final hardness is under RC35 you are OK.
Just remember that free information is worth as much as you paid for it.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
RE: Nitronic 50 for Stems and NACE0175-3
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Nitronic 50 for Stems and NACE0175-3