×
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

hardenability requirement for L-80 13Cr Coupling

hardenability requirement for L-80 13Cr Coupling

hardenability requirement for L-80 13Cr Coupling

(OP)
Please can somebody tell me about hardenability requirement as per API 5CT for Coupling 3-1/2" L-80 13Cr material.

We have received hardness report after tempering, but hardenabilty hardness values for as quenched condition are not mentioned in MTC. As per my interpretation with code, hardenabilty test to be carried out.(Reference API 5CT, clause 7.10.2)
We have raised discrepancy about this and conveyed to manufactuer.
But manufacturer clarifies that hardeneability requirement is not mandatory.

 

RE: hardenability requirement for L-80 13Cr Coupling


In the 1995 5CT ed, :6.2.8.2. calls for 50% min martensite in Group2 other than C90 & T95. That would require a quench hardness test for 13Cr ; That is unecessary because of the extreme hardenability of 13Cr. I expect recent ed. of 5CT apply this requirement to only conventional L-80.
So ,you are correct if the spec has not changed since 1995.  

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