Tag Archives: Super Duplex 2507

Duplex 2507: Bolts for geothermal drilling exposed to sulfur and salt

Posted on May 20, 2017 by dean

Q: I’m working on a on a geothermal energy drilling project. Carbon steel we’re currently using to bolt drilling components is failing from corrosion. We have corrosive an environment with high levels of sulfur and salt, as well as temperatures to 260C. Any suggestions? A: Super Duplex 2507 is often used … Continue reading →

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Specialty Stainless Steel Fasteners: A-286, Super Dupex & 17-4PH

Posted on March 16, 2016 by dean

While there are many grades of stainless steel available for fasteners, we will focus on three of the highest performing grades used: Super Duplex, A-286 and 17-4PH.When comparing these materials to 316 stainless steel, their properties – of corrosion resistance, strength and high temperature stability – are significantly improved.

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