×
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

INCOLOY 800HT
3

INCOLOY 800HT

INCOLOY 800HT

(OP)
i WOULD LIKE TO KNOW THE MAXIMUM OPERATION TEMPERATURE FOR A PIPE OF INCOLOY 800HT

RE: INCOLOY 800HT

Look for ASTM B408, ASME SB-408 or UNS N08800.  The Young's modulus and S Stress values are published with suitable numbers to about 1100 degree F in Various ASME B31.1, B31.3, "Physical and Mechanical Properties".  The ASME Boiler and Pressure Vessel Code, Section II Materials, Part D - Properties - S values avalance down from 13000 psi at 1100 deg F to 2000 psi at 1300 deg F.  Thus, I would avoid N08800 above 1100 degree F.

John

RE: INCOLOY 800HT

2
See below for specific information on Incoloy 800;

http://www.specialmetals.com/


Suggest Incoloy 800 HT pipe/tube under ASME B 407.

Maximum service temperature depends on the application. For example,  Section I (boiler application) the maximum service temperature is 1500 deg F, where Section VIII, Div 1 application is 1650 deg F for unfired pressure vessels.

For B31 Pressure Piping (B31.1 - Power Piping) maximum service temperature is 1200 deg F. For B31.3 (Process Piping), the maximum service temperature is 1650 deg F.

RE: INCOLOY 800HT

Metengr,

The website link you provided has excellent information on it. Do you, or anyone else, know of a website with similar information for ferrous alloys, namely various grades of steel.  I have found the following website to be helpful.  

http://www.steelforge.com/

Can someone recommend another website?  Thank you all!

RE: INCOLOY 800HT

(OP)
Do any know the allowable stress for 1500°F to 1650°F for incoloy 800HT

RE: INCOLOY 800HT

Yes, per ASME B&PV Code, Section II, Part D, for UNS
08811, Incoloy 800HT

1500 deg F    2.2 Ksi
1550 deg F    1.6 Ksi
1600 deg F    1.2 Ksi
1650 deg F    0.91 Ksi


RE: INCOLOY 800HT

(OP)
This allowable stresses aplyy to ASME B31.3 ?

RE: INCOLOY 800HT

No. For B31.3

1500 deg F 1.9 Ksi
1550       1.5
1600       1.2
1650       1.0       

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