Monthly Archives: November 2017 here

PEEK screws for high temperature to 400F & corrosion resistance

Posted on November 27, 2017 by dean

Q:  I’m designing laboratory equipment that will be utilized at 325-400F and I need screws that have immunity to organics and low concentrations of acids, as well be FDA approved. Would that be a ceramic? A:  You probably don’t want a ceramic screw. Though they are corrosion resistant and offer … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, High Temperature Resistance, Material, Technical Questions, Ultra Purity | Tagged , , , , , | Leave a comment

Inconel & Alloy 330 bolts for high temperature strength

Posted on November 20, 2017 by dean

Q: My customer is having an issue with his stainless steel fastener bending. They are being used in a high-heat application running at approximately 1600F. Is this normal? Any ideas? A: This is definitely expected at these temperatures. If temperature and strength are you main focus, I would suggest either … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged , , , , , | Leave a comment

Hastelloy bolts for hydro-treating with sour gas – H2S

Posted on November 16, 2017 by dean

Q: I’m running a hydro-treating process that is running at 350-390°C where we’re producing H2S and NH3. Any ideas on a bolt that can handle the temperature and chemicals? A: In this type of process you having to deal with high temperatures and the formation of sulfuric acid (H2SO4) from the H2S especially … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged , , , , , , , , | Leave a comment

Duplex 2507 bolts for high strength application in salt air

Posted on November 15, 2017 by dean

Q: I have a high strength application that requires resistance to damp salt air and occasional sea splash, I’m using Monel 400 but it’s not holding up the the 75ksi of yield I need. Lots of broken bolts? Is is corrosion or  strength? Thoughts? A: Your issue isn’t the corrosion. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged , , , , , , , , , , , | Leave a comment

AL6XN vs Monel bolts for salt water and marine use

Posted on November 14, 2017 by dean

Q: Is AL6XN a steel or nickel alloy? Trying to figure out if it would perform as well as Monel in seawater. A: To answer your first question, AL6XN bolts are actually both a nickel and a steel alloy. AL6XN is often described as a high nickel content stainless alloy. Though … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged , , , , , , , , , , , , , , | Leave a comment

Incoloy 825 vs Hastelloy C276 for Sour Gas

Posted on November 13, 2017 by dean

Q: I need bolts for a well pump exposed to sour gas? I’ve currently use Incoloy 825 bolts which works reasonably well, but I’m wondering if there is a better choice that is more economical and could offer equal or better corrosion resistance – any ideas? A: A great nickel alloy bolt … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged , , , , , , , , , | Leave a comment

Bolt resistant to sodium hypochlorite with 80ksi yield strength

Posted on November 7, 2017 by dean

Q: I’m looking for guidance on fasteners with good resistance exposure to sodium hypochlorite. The material would need to be bleach-resistance, but also have a tensile yield strength of over 80ksi.

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Technical Questions | Tagged , , , , , , , , | Leave a comment

Nickel Alloys Part 1: Moderate Corrosion

Posted on November 2, 2017 by dean

Nickel alloys are a special class of metals containing high levels of nickel (often greater than 20%). They play a key role in industry for their unique combination of high strength, corrosion resistance to harsh acids (like hydrochloric and sulfuric) and high temperature stability. This two-part newsletter will help summarize the distinct benefits of the … Continue reading →

Posted in Application, Blog, Corrosion Resistance, Material, Specialty Metal Fasteners | Tagged , , , , , , , , , , , , , , , , | Leave a comment