Tag Archives: Inconel 718 fasteners for high temperature

Q: I am looking to eventually get a quote for some 3/8″ studs and nuts. I need to have a min yield stress of 29 ksi at 700F.  SA-540 Grade B22 Class 2 or SB-637 should work. Is this something you can provide? A: These are very different materials: A-540 Grade B22 Class … Continue reading

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Q: Are there any materials I can use with the strength of 17-4PH in the H1150 heat treat, but with better corrosion resistant properties. I have low levels of sulfuric acid and chlorides that seem to be attacking the 17-4 steel. A: The best choice for both extreme strength and … Continue reading

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Q: I’m looking into a bolt which will be used to create vacuum seal with graphite  and hold vacuum of 1 Pa. I’ve tried Inconel 718 but they seem to fail loosen at high temperatures, and my system requires 1500 F. Because I am trying to seal a vacuum system, … Continue reading

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