×
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

Yield to Tensile Ratio

Yield to Tensile Ratio

Yield to Tensile Ratio

(OP)
Hello Guys!

We are producing 10" x 11.7 x DRL Seamless pipe in API 5L Gr. X 60, with material composition as follow:-

C = 0.14 %,  Si = 0.22 %,  Mn = 1.33 %,  P = 0.0012 %,  S = 0.00062 %,  Cr = 0.165 %,  Ni = 0.143 %,  Mo = 0.022 %,  Al = 0.0241 %,  Cu = 0.215 %,  Co = 0.0107 %,  Ti = 0.0016 %,  V = 0.00034 %,  W = 0.0071 %,  Pb = 0.0010 %,  Sn = 0.0109 %,  Ca = 0.0010 %,  Fe = 97.7 %,  CE = 0.42%

I want to know, what is the procedure of reducing the yield to tensile ratio? In our case the ratio is 0.93 which is within the limits of API 5L Gr. X-60 but the customer has specified 0.87. We have changed the heat treatment parameters 2 to 3 times in the following range

Required: Yield = 415 – 565,Tensile = 520 – 760, Ratio = 0.87

Temp (C) Time(Mints)Yield    Tensile     Ratio

675        12            586          602       0.97
675        15            575          595       0.96
725        20            480          504       0.95

But the yield and tensile is reducing with the same proportion, hence the ratio is same. Please advise what we should do to reduce the ratio.    


Kind Regards
Zebmahar            
 

RE: Yield to Tensile Ratio

Please don't double post.  You have 3 replies to the same question in the Metal & Metallurgy Engineering forum.

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04
 

RE: Yield to Tensile Ratio

(OP)
ok, but i want to have an early reply

Regards
Zebmahar

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