Inconel Bolts for High Pressure Flange

Q: Looking for a bolt rated 320 psi for use at a temperature of  1292F on an Incoloy 80oHT flange? Suggestions?

A: Assuming you want hex head bolts and Inconel 625 is probably your best choice at those temperatures. At about 1300F, Inconel 625 bolts (per the chart below) should be able to withstand a yield of 60,000psi. If that seems overkill you could look at Alloy 330  bolts which will have about 20,000psi at 1300F.

image.png

This entry was posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *

Questions?

Our material experts are ready to help guide you through your specific application.

Contact an Expert