×
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

A 514 changes at what temperature

A 514 changes at what temperature

A 514 changes at what temperature

(OP)
At what temperature would A 514 (h) break down?  

RE: A 514 changes at what temperature

You don't define breakdown so I will assume a permanent change to the original specified mechanical properties.

For ASTM A 514 Grade H steel (high yield, Q&T), above 400 deg F to 1100 deg F you will see a reduction in mechanical properties while at elevated temperature; cool to RT and properties are back to near original.

Exposure to temperatures above 1150 deg F (original minimum tempering temperature by specification) will have a step change to lower mechanical properties and upon cooling to RT will be a permanent change (lowered) to these properties unless this material is reheat treated.
 

RE: A 514 changes at what temperature

metengr - Can you also comment on the reduced properties? We are considering a forming process with A514 that would require twmps of 900 deg C. Is there anyway to predict the material properties after this operation?

Also, does anyone have any experience requenching and tempering A514 or working with green material prior to Q&T (not sure if this is even possible to get)?

Thanks

RE: A 514 changes at what temperature

At 900 deg C, the UTS and YS will be close to 10% of RT properties. After cooling from this temeprature, the mechanical properties will be lower (between normalizing and annealing).

You can easily reheat treat this material to achieve the desired mechanical properties after hot forming.

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