×
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

Proprietary Filler Metals

Proprietary Filler Metals

Proprietary Filler Metals

(OP)
Dear All,

We've developed some new austenitic filler metals for ASME code work. No plans on getting it added to Sec II C. We have done many tests on our test heat and we are satisfied. The question is, for production of new melts, what tests should be done?

After reviewing code I see no clear direction on what the MTRs should contain for each new heat: UW-5 points to UG-4 to UG-15. UG-9 points to VIII, IX, and PQRs in general. VIII and IX appears to be only from vessel manufacturer point of view, not consumable manufacturer point of view, which is no surprise.

In past I see we had other proprietary metals with only chemistry analysis listed, some reports with more, which I questioned during our meeting. I believe this subject comes down to engineering judgement, what is your opinions here? I plan to request SFA 5.4 and 5.9 tests and supply my own criteria for each form.

Is there industry standards, technical reports, or a recommended practice on this?

RE: Proprietary Filler Metals

While using the Code is a process of connecting the dots (all those clauses you cite), it is also necessary to understand the logic. Engineering judgment must always be in play (in fact that is mandated explicitly).

I have never faced your problem, but availing yourself of a 'G' category in section II-C could be one approach, especially if the differences between your filler and an established classification are minor. The chapters you cite indicate stainless steel, so you are probably not far away from an existing classification, meaning that you will have a guide to the significant characteristics such as strength, corrosion resistance, weldability, stability, etc.
Normally I frown on the use of G classifications, because it often isn't actually necessary, it's just shenanigans by manufacturers. Other times it is necessary, and in fact I am currently involved with such a customized low alloy filler metal (I cannot say more than that). If you are not an established filler metal manufacturer, you may not know about the know-how and secret sauce that go into making a functional product.

If you ultimately want a material included in the Code, the first step is initiating a Code Case. Which requires a lot of real data, but hopefully you are doing a lot of development work in any case, for due diligence. I would get in touch with your local Authorized Inspector as a starting point.

Hopefully you are taking steps to protect your IP (including a secure server protected from prying Chinese eyes).

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

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

eBook - Efficient and Effective Production Support with 3D Printed Jigs and Fixtures
Jigs and fixtures offer manufacturers a reliable process for delivering accurate, high-quality outcomes, whether for a specific part or feature, or for consistency across multiples of parts. Although the methodologies and materials for producing jigs and fixtures have evolved beyond the conventional metal tooling of years past, their position as a manufacturing staple remains constant due to the benefits they offer. Download Now
Overcoming Cutting Tool Challenges in Aerospace Machining
Aerospace manufacturing has always been on the cutting edge, from materials to production techniques. However, these two aspects of aerospace machining can conflict, as manufacturers strive to maintain machining efficiency with new materials by using new methods and cutting tools. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close