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Monthly Archives: April 2017 here
Posted on April 27, 2017 by dean
Q: We have a pulp & paper digester that is used to cook wood chips in an alkaline solution. The fasteners will be exposed to high temperatures and abrasive conditions. Any suggestions? A: Without knowing the specifics of your process, I can make two general material suggestions. Duplex 2205 fasteners are … Continue reading →
Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged alkaline, Alloy 2205, Alloy C276, Chlorides, Crevice Corrosion, Digester, Duplex 2205, Duplex Steel, Hastelloy, Hastelloy C276, pitting corrosion, Pulp & Paper, Pulp & paper digester, Stress Corrosion Cracking | Leave a comment
Posted on April 25, 2017 by dean
Q: I have a robotic application where I need a fastener that is both lightweight and strong. Also, the style of the fastener needs to provide a wide clamping area in a low clearance area. Any suggestions? A: A material you might consider is Titanium, grade 5. The most common … Continue reading →
Posted on April 13, 2017 by dean
Q: Is there any advantage of using a Hastelloy B3 fastener over a B2 fastener? A: Both Hastelloy B2 and B3 fasteners provide good resistance to non-oxidizing acids, such as hydrochloric acid and sulfuric acid. The only advantages of Hastelloy B3 fasteners over B2, is that they offer enhanced thermal stability … Continue reading →
Posted on April 11, 2017 by dean
Q: I saw on your high temperature chart that Molybdenum is listed twice. I’m confused, which high temperature should I use? A: Both high temperatures are accurate, depending on the situation where you are using Molybdenum fasteners. Molybdenum screws can be used up to 2912F only if it is used … Continue reading →
Posted in FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged Fasteners, molybdenum, screws, vacuum | Leave a comment
Posted on April 11, 2017 by dean
Q: What is the difference between Incoloy 825 and 925 bolts? A: Bolts made from Incoloy 925 are precipitation hardened version of Incoloy 825 bolts. What this means is it is put through a heat treatment process which hardens the alloy at the atomic level. Basically Incoloy 925 bolts offers similar … Continue reading →
Posted in FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged 825, 925, Incoloy | Leave a comment
Posted on April 10, 2017 by dean
Q: I’m currently using Monel 400 hex head bolts in salt water. Should I be using K500? What’s the difference? A: Basically, Monel K500 is a precipitation hardened version of Monel 400. This means the material goes through a heat treating process that changes the alloy’s structural matrix to increase its tensile and … Continue reading →
Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged 400, Bolts, K500, Monel, salt water, sea water | Leave a comment
Posted on April 10, 2017 by dean
Q: How does creep occur and what polymer is best to prevent this? A: Creep is the permanent deformation of the material caused by constant load or stress, usually accompanied by constant high temperature. This can result in permanent changes of the fastener shape as well weakening and fracturing of the … Continue reading →
Posted in Engineered Polymer Fasteners, FAQs, High Strength, Technical Questions | Tagged creep resistant, PEEK, polymers screws | Leave a comment
Posted on April 7, 2017 by dean
Q: I have a seawater application where the water can be stagnant or polluted. Is Monel bolts the best choice? A: For stagnant seawater application we would usually suggest Titanium over Monel fasteners. Although Monel is very resistant to saltwater, it can experience pitting corrosion in stagnant water situations. There have … Continue reading →
Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Corrosion, Monel, seawater, Titanium | Leave a comment
Posted on April 7, 2017 by dean
Q: What is the highest temperature I could use Inconel 718 bolts? A: Inconel 718 fasteners could be used reliably up to about 1300F. Because Inconel 718 is heat treated or age hardened at 1325F, going beyond 1300F will significantly affect its strength properties. Furthermore, its strength may not fully return. … Continue reading →
Posted in FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged High Temperature, Inconel 718 | Leave a comment