API 5CT-Gr. K55 structural properties.
API 5CT-Gr. K55 structural properties.
(OP)
Just checking if anyone has seen API 5CT- Grade K55 used for structural purposes.
(Steel piles in this case).
The chemical composition table (Table C.4 in API 5CT) does not list any limits (max. or min.) for any elements other than Phosphorous (P) and Sulfur(S).
Without a max./min. on critical elements including Carbon, I don’t see how Gr. K55 can be used for
structural purposes.
I've also seen test results reporting E=23,000+/- or about 20% less than the 29,000 ksi value used for steel design.
Any feedback would be appreciated.
I’ll also post this in the Structural Forum
(Steel piles in this case).
The chemical composition table (Table C.4 in API 5CT) does not list any limits (max. or min.) for any elements other than Phosphorous (P) and Sulfur(S).
Without a max./min. on critical elements including Carbon, I don’t see how Gr. K55 can be used for
structural purposes.
I've also seen test results reporting E=23,000+/- or about 20% less than the 29,000 ksi value used for steel design.
Any feedback would be appreciated.
I’ll also post this in the Structural Forum





RE: API 5CT-Gr. K55 structural properties.
RE: API 5CT-Gr. K55 structural properties.
New only for casing.
RE: API 5CT-Gr. K55 structural properties.
Note casing can be brittle at ambient temperatures.
RE: API 5CT-Gr. K55 structural properties.
I don't think it can be used for any other purpose without more testing and addition of elements to the specification.
Does someone just have a pile of this hanging around?
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