Typical Charpy values for API 5L X65?
Typical Charpy values for API 5L X65?
(OP)
Does anyone know what might be typical CVN results at 0 degrees C for API 5L X65? I'm asking about the base metal, not the weld.
Hg
Hg
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RE: Typical Charpy values for API 5L X65?
RE: Typical Charpy values for API 5L X65?
Hg
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RE: Typical Charpy values for API 5L X65?
I reviewed a paper from JFE Oil and Gas on devleopment of X100 steels, and they had CVN values reported for JOE and COE formed BM plate steel. The CVN BM values at -10 deg C were between 310 to 320 J. At higher temperature, the CVN values would be slightly higher.
RE: Typical Charpy values for API 5L X65?
I guess it's OK. I'm not used to this steel, and the numbers seemed ridiculously high, especially since the minimum spec requirement is only 27J.
Hg
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RE: Typical Charpy values for API 5L X65?
RE: Typical Charpy values for API 5L X65?
Hg
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RE: Typical Charpy values for API 5L X65?
While "typical" toughness values should not be ascribed to X65 pipe due to highly differnet melting and thermal/mechanical heat treatments used in its manufacture, the values you described are certainly obtainable and have been obtained for at least the past 25 years.
RE: Typical Charpy values for API 5L X65?
Next question--how consistent should the results be? I have 4 heats, 3 samples each, and they're within about 5% of each other. I would expect to see more scatter.
Hg
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RE: Typical Charpy values for API 5L X65?
Not necessarily. I have seen many CVN test results with less scatter than you reported for typical B&PV plate steels that are not microalloy, and are N&T.
RE: Typical Charpy values for API 5L X65?
Thanks, everyone!
Hg
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