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Thick wall A694 F60

Thick wall A694 F60

Thick wall A694 F60

We're looking to make some thick-wall piping components out of A694 F60 material. The final part's cross sections range from 4in to 9.5in. Top spec is API 17G.

We're considering forging & then rough machine the part to have surfaces within 1/2" of the final part. Then heat treating (Q&T) to get properties, and then final machine.

Could someone with experience with thick-wall forgings and/or A694 weigh in on this? Is this too thick to get the required properties?

Required properties:
60ksi min yield
174-235 HBW hardness
TCVN 32ftlbs @ 14F
Verified at 1/4T and 1/2T, to best of our interpretation.

I'm thinking the surfaces down 2-3 inches will be good, and pass the T/4 test. But much past that material will be weak. Theoretically this shouldn't be an issue, as I don't see the part breaking where it is thickest. But I'm not sure how to justify that with the spec's T/2 requirement. Help / shared experience much appreciated!

RE: Thick wall A694 F60

Thank you. Yes I had found those; they only go to 4" thick. My finished wall is 9.5" thick, 10.5" thick at heat treat.

RE: Thick wall A694 F60

Your going to have to see what properties you can achieve on your own. This means doing some type of qualification, again working with a reputable steel mill.

RE: Thick wall A694 F60

Hence the question asking if someone has experience with this.

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