×
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

Inconel 625 bhn??

Inconel 625 bhn??

Inconel 625 bhn??

(OP)
Dear material people,

We have ordered a carbon steel vessel with weld overlayed in inconel 625 and we have been asked by our client to ensure that the material does not exceed 200BHN.

Should this pose any problem??

Our fabricator is asking for us to request a concession on the hardness because they are worried about achieving it.

Any help on this matter is much appreciated.

RE: Inconel 625 bhn??

Quote:

We have ordered a carbon steel vessel with weld overlayed in inconel 625 and we have been asked by our client to ensure that the material does not exceed 200BHN.

Should this pose any problem??

I checked in my Avesta Welding Manual, and for covered electrodes (Avesta P625), and for their MIG solid wire (P12 product), they provide a typical hardness for as-deposited weld metal of 220 Brinell, for both.

So, to settle this, I would have a carbon steel coupon run with the 625 overlay, have the coupon cross sectioned and have a hardness traverse across the thickness of the overlay.  This is the real proof between 200 Brinell versus 220 Brinell in published literature.

RE: Inconel 625 bhn??

What is the client's specific point of requesting a hardness limit in the 625 layer? Did they mean the HAZ of the carbon steel substrate?

Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/

RE: Inconel 625 bhn??

I assume that you are dealing with potential H2S issues? Sour gas or similar? this sounds like a flowdown of MR0175...is that it?

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