ni625 solid pipe yield strength ....

[hsemus]

ni625 solid pipe yield strength is normally at 60ksi, if I want to increase it to 65ksi. Is this acceptable for this material. Can i get this 65ksi from stockist or do i need to get it customised for the process.

regards

 

[EdStainless]

You would need to either find material in stock that happened to meet your requirement, or go to a mill.
Since the 60ksi material is the low temp anneal (not full solution) I don't know how much margin there is to offer a higher strength.

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Plymouth Tube

 

[FACS]

What is a "solid" pipe?

Charlie

http://www.facsco.com

 

[EdStainless]

I took it to mean seamless.

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Plymouth Tube

 

[SJones]

What are you actually asking: is it to try and get an SMYS increase for design purposes?

Steve Jones
Corrosion Management Consultant

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

All answers are personal opinions only and are in no way connected with any employer.

 

[hsemus]

SJones:- you are right I am looking to increase the design SMYS limit .

 

[OGMetEngr]

I see 625 bar above 65ksi yield quite often. It's the result of cold-work with a relatively low temp "stress relief" (e.g. - 1600F). A full solution anneal at higher temps will lower it back down to close to 60ksi yield. Call a mill or distributor and see what they have in stock, I'm sure they will have a heat with yield higher than 65ksi.

 

[SJones]

But will the design specification allow the use of actual mechanical properties as opposed to specified minima?

Steve Jones
Corrosion Management Consultant

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

All answers are personal opinions only and are in no way connected with any employer.

 

[OGMetEngr]

Oh I see. If you need similar corrosion resistance with higher strength (e.g. - double the strength) you could always go with 625+/725.