Scott... I do not think that a thermowell made of metal can be used at 2000 F........especially under these agressive conditions. As a preliminary place to start your evaluation, consider the research that has been done on superheater boiler tube materials on an equally aggressive environ.....the inside of a boiler. A review of the conclusions of this paper show that significant wastage occurs at 1200-1400F for a select group of high temperature materials http://www.fwc.com/publications/tech_papers/powgen/blough1.cfm Come back with your thoughts..... MJC

Scott Hastelloy X and Haynes Alloy 556 and Haynes Alloy HR 160 could be better than TP 310 as thermowell material for your service duties . They have excellenct resistance, under oxidizing, suplphizing and a part of carburizing atmosphere or in neutral atmospheres. Trust this is of help to you C.V.Srinivasan Nishi Engineers Pvt Ltd Chennai India June 25 E-mail: nishi@vsnl.co >Scott >From your description I suppose that the equipment you are >speaking about is a sulphur incinerator or a sulphur waste >boiler. Stem thermo well normally used in those applications >at 1093ºC are made of stainless steel TP310. > >Regards > >Luis Marques