×
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

Corrosion resistance of stainless steel at elevated temperatures

Corrosion resistance of stainless steel at elevated temperatures

Corrosion resistance of stainless steel at elevated temperatures

(OP)
What would be a good corrosion resistant stainless steel to be used over 800C in an air / steam environment?

Structural strength is not of primary importance as pressures wont be going over 8 bar.

Would martensitic have any advantages over austenitic?

Thanks

RE: Corrosion resistance of stainless steel at elevated temperatures

(OP)
Forgot to mention.

Application is steam piping.

Also cost is an issue.

Thanks

RE: Corrosion resistance of stainless steel at elevated temperatures

There are no martensitic grades suitable use at 800 C. Type 310 austenitic stainless is a common high temperature grade.

RE: Corrosion resistance of stainless steel at elevated temperatures

No, martensitic steels have no advantage because of softening and creep strength above 1200 deg F or 650 deg C. At 800 deg C you are going to be limited to Nickel-base alloys, like 800H. I would refer you to ASME B&PV Code, Section II, Part D and search for alloys permitted to 1500 deg F or 820 deg C.

RE: Corrosion resistance of stainless steel at elevated temperatures

I found my copy of B31.1 Power Piping Code and for 1500 deg F service, you can use TP 304H pipe material under ASTM A 376. See Appendix A-8. I would strongly recommend you follow B31.1 for piping. Other stainless steel high temperature pipe grades are not necessarily listed.

RE: Corrosion resistance of stainless steel at elevated temperatures

(OP)
Thanks for help

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