Material for Steam Valve Spindles
Material for Steam Valve Spindles
(OP)
We have experimented with various materials for valve spindles operating in steam at 540C including
Nitrided low allow steels (EN41B)
Nitrided 12Cr steels
Incolloy 800 HT
The most successful valve spindles have been a low alloy steel (AISI P20) coated with Stellite 6. We wish to manufacture more of these spindles unfortunately we cannot source AISI P20 readily. Do you know of a supplier of AISI P20 or could you advise of any similar low alloy creep resistant steel suitable for the application?
Nitrided low allow steels (EN41B)
Nitrided 12Cr steels
Incolloy 800 HT
The most successful valve spindles have been a low alloy steel (AISI P20) coated with Stellite 6. We wish to manufacture more of these spindles unfortunately we cannot source AISI P20 readily. Do you know of a supplier of AISI P20 or could you advise of any similar low alloy creep resistant steel suitable for the application?





RE: Material for Steam Valve Spindles
Hi Gordon F,
Greetings. Have you used specially grain orientated forgings for such applications? And when you say successful, what sort of time frames have your spindles been in service? Have they bent slightly after excessive use? Stop valves or governor/control valves?
have you tried (for your material)?
Latrobe Steel Company, Klanicac@timken.com, www.timkenlatrobe.com
Best regards
RE: Material for Steam Valve Spindles
trey www.crucibleservice.com
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