Hydrogen Embrittlement of Valve Capscrew Fasteners

bolt fracture surface

Body capscrews from a ball valve showing hydrogen embrittlement fracture. Exposed to atmospheric conditions in a gulf coast environment, they corroded and fractured, separating the valve body. The left capscrew fractured due to hydrogen embrittlement cracking through the complete cross section. The right capscrew initially fractured due to hydrogen embrittlement then propagated due to tensile overload. Both fractures started at the bottom of the photograph.

 

Contact Us

If you have questions or need our depth of experience to help with your issues...

Call us: 281-556-8774

Email us: info@hghouston.com

News

The safe operation of oil refineries in the United States is under constant r...read more
When: January 30, 2017 - February 2, 2017 Where: Galveston Island Conventi...read more

View all articles

Stay Current

Sign up for our quarterly newsletter

covering updates on corrosion