×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Material for Steam Valve Spindles

Material for Steam Valve Spindles

Material for Steam Valve Spindles

(OP)
Hi

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?

RE: Material for Steam Valve Spindles

We have used 2.25% Cr - 1% Mo alloy steel overlaid with Stellite 6 with no problems in our MS and turbine stop valves discs. The AISI P20 contains only 1.7% Cr and 0.5% Mo from what I remember, and is a tool steel material.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources