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Home > Forums > Petroleum Engineers > Activities > Petroleum production engineering Forum

Charpy Testing 5L Pipe at -25F

thread469-322164
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Paulsrig (Marine/Ocean)
16 May 12 15:38
I want to use API 5L X70, 18.00 in. O.D. X 0.75 in. Wall thickness pipe in an application at -25F. What can be the expected charpy results at -25F?
SJones (Petroleum)
17 May 12 4:24
Do you require values higher than those of API 5L?

Steve Jones
Materials & Corrosion Engineer

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

Paulsrig (Marine/Ocean)
17 May 12 10:30
No. I believe 5L requires 37 ft-lbs at 32F
SJones (Petroleum)
17 May 12 12:43
18-inch X-70 only requires 27J (20 ft-lbs) at the test temperature, unless you are having to apply fracture arrest principles

Steve Jones
Materials & Corrosion Engineer

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

Paulsrig (Marine/Ocean)
17 May 12 16:14
Thank you, Steve. You are correct. Would you expect the same 27J to be found at -25F as at 32F per 5L?
Paul
SJones (Petroleum)
18 May 12 2:37
27J is the minimum requirement. The answer as to whether you will get that at -25 deg F is: it depends upon whom the pipe is being purchased from

Provided that the Charpy requirements are clearly communicated with the order, quality pipe manufacturers will tailor steel purchase and pipe manufacturing to meet them.

Steve Jones
Materials & Corrosion Engineer

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

Paulsrig (Marine/Ocean)
18 May 12 13:39
Thank you, Steve.
Who are you favorite pipe makers? There is a lot of Chinese and Indian pipe out there and I am a bit leery.
SJones (Petroleum)
19 May 12 3:33
I don't really have any favourites, but to help you in your quest see the attachment. It's from 2006 so some of the mill locations may now be defunct or affiliations changed

Steve Jones
Materials & Corrosion Engineer

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

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