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!

*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

A249 and A1016 Clarification Required

A249 and A1016 Clarification Required

A249 and A1016 Clarification Required

We are in the process of tendering for LP Heaters, and the client specified hardness testing of the U-tubes to be done according to A249. The tubes we want to use will be 15mm OD and 0.8mm wall thickness.

Now, in A249 it is stated in Table 4 Tensile and Hardness Requirements that it is "not applicable to tubes less than 1/8 in. [3.2mm] in outside diameter or having a wall thickness below 0.015 in. [0.4mm] or both." So therefore A249 requires hardness testing.

However it states in A1016 24.3 "For tubes with wall thickness less than 0.065 in. [1.7mm], the hardness test shall not be required." which now says hardness testing is not required.

So which specification governs? Is hardness testing required or not?

RE: A249 and A1016 Clarification Required

The product spec, in this case A249 always over rules the general spec.  The general spec A1016 only tells you what may be required or what needs to be done in the absence of any other directions.

Why is someone buying LP heater tubes to A249?  There is no coverage there for the bending or ubend anneal.  The correct spec is A688.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

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! Already a Member? Login


Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. 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