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Tag Archives: Hastelloy
Posted on January 22, 2018 by dean
Q: I’m using HCl in a pickling process and have used Hastelloy C276 bolts to protect my equipment but am still having corrosion issues. Any ideas? A: In pickling processes ferric chloride is created which is a strong oxidizer and most pickling process are at elevated temperatures – Hastelloy C276 … Continue reading →
Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy C2000, Alloy C276, Hastelloy, Hastelloy Bolts, hastelloy C2000, Hastelloy C276, Hastelloy Screws, HCl, HCl Corrosion, Hydrochloric Acid, hydrochloric acid corrosion, Hydrochloric acid resistance, steel pickling | Leave a comment
Posted on January 3, 2018 by dean
Q: I’m running a lithium extraction process where a mineral called spodumene is roasted in a mixture of sulphuric acid (95-97%) at at about 150°C to form lithium sulfate. I’ve to use Hastelloy C276 for some process equipment but I’m still experiencing corrosion. Please help. A: Hastelloy C276 bolts typically … Continue reading →
Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy C276, H2SO4, Hastelloy, Hastelloy C276, high temperature H2SO4, high temperature sulfuric acid, hot acid corrosion, Hot Acids, Hot Sulfuric Acid, Lithium Extraction, spodumene, Sulfuric Acid, Sulfuric Acid Corrosion, tantalum | Leave a comment
Posted on December 12, 2017 by dean
Q: I’m running a municipal solid waste incinerator and am having trouble with corrosion from a combination of hydrochloric acid and sulfuric acid that is derived from chloride and sulfur containing compounds in the waste fuel stream. I was using Duplex steel bolts for the chloride corrosion but they aren’t holding … Continue reading →
Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy C276, Bolts, chloride condensation, H2SO4, Hastelloy, Hastelloy C276, HCl, Hydrochloric Acid, incinerator, municipal waste, Nickel Alloy, screws, solid waste incinerator, Sulfuric Acid, waste fuel stream | Leave a comment
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 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 | Tagged Alloy 825, Alloy C276, Corrosion, H2S, Hastelloy, Hastelloy C276, Incoloy, Incoloy 825, sour gas, sour gas well | Leave a comment
Posted on September 29, 2017 by dean
Oilfields are subjected to a diversity of corrosive elements including carbonic acids, sour gas (H2S), and fracking/stimulant acids such as hydrochloric and hydrofluoric acid. Naphthenic acids and simple organic acids are also found in crude oil extraction. In conjunction to acids, these environments contain sand and other abrasive elements which … Continue reading →
Posted in Application, Blog, Corrosion Resistance, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged fracking corrosion, Hastelloy, hastelloy C2000, Hastelloy C276, Hydrochloric Acid, Hydrochloric acid resistance, Hydrofluoric acid, Incoloy, Incoloy 825, Incoloy 925, oil & gas corrosion, Oil Corrosion, sour gas, sour gas well, sulfur corrosion, Sulfur corrosion resistance, sulfur-induced stress cracking | 1 Comment
Posted on August 29, 2017 by dean
Special Fasteners China. offers hose clamps in Titanium and Hastelloy C276. This newsletter overviews the two styles available – worm drive and medium duty – as well as highlight what materials are best for your application. Titanium Grade 2 hose clamps are in stock and available in the sizes shown here. Hastelloy C276 hose clamps are custom made to order … Continue reading →
Posted in Blog, Corrosion Resistance, Lightweight, Specialty Metal Fasteners | Tagged Acid resistant hose clamp, Alloy C276, Corrosion resistant hose clamp, Hastelloy, Hastelloy C276, Hose clamp, Medium duty hose clamp, Titanium, Titanium Gr2, Titanium Grade 2, Worm drive, Worm drive hose clamp | Leave a comment
Posted on August 28, 2017 by dean
Q: Inconel 625 and Hastelloy C276 bolts seem to have similar Nickel content. Does this mean these fasteners will perform the same in a corrosive environment? A: Inconel 625 and Hastelloy C276 bolts do offer similar corrosion resistance but Hastelloy C276 has a slight edge in many acidic environements, especially … Continue reading →
Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Acid, Acidic, Acids, Alloy 625, Alloy C276, Corrosion, corrosion resistance, H2SO4, Hastelloy, Hastelloy C276, HCl, Hydrochloric Acid, Inconel, Inconel 625, Oxidizing, Sulfuric Acid | Leave a comment
Posted on August 23, 2017 by dean
Q: I’m working with boiling sulfuric acid and tried Alloy 20 for some of my bolting but am having corrosion. I’m confused as I thought that is what they are best for. Any suggestions. A: You are right Alloy 20 does typically perform very well in sulfuric acid and even … Continue reading →
Posted on July 25, 2017 by dean
Hastelloy alloys have long been the gold standard of corrosion resistant bolts; only out performed by metals like Zirconium and Tantalum. This family of high performance nickel alloys can handle strong acids like hydrochloric, sulfuric, acetic, formic and phosphoric acids, yet each grade actually exhibits its own strengths in dealing with specific acids and niche environments. … Continue reading →
Posted in Blog, Material, Specialty Metal Fasteners, Uncategorized | Tagged Alloy B3, Alloy C2000, Alloy C22, Alloy C276, Boiling Acid, Corrosion, H2SO4, Hastelloy, Hastelloy B3, hastelloy C2000, Hastelloy C22, Hastelloy C276, HCl, Hot Acids, Hydrochloric Acid, nickel alloys, oxidizers, Oxidizing, Sulfuric Acid | Leave a comment
Posted on July 12, 2017 by dean
Q: I was planning on using Hastelloy C276 in hot sulfuric acid. It would be approximately 50% concentration around 100F +/- 10 degrees. Will this be okay? I’m just concerned because I read that it cannot handle strong oxidizing environments and I’ll be using it in an application where its … Continue reading →
Posted on June 21, 2017 by dean
Q: We are running a steel pickling process are considering switching from a sulfuric acid process to hydrochloric acid. Our system currently uses Inconel 625 bolting. With this be sufficient? A: Inconel 625 is a good material for acid corrosion but for large system of hydrochloric acid, especially with the … Continue reading →
Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged C22, Hastelloy, Hastelloy C22, HCl, Hydrochloric Acid, Inconel, Inconel 625, metal pickling, steel pickling, tantalum | Leave a comment
Posted on May 25, 2017 by dean
Q: I’m using zirconium fasteners in a sulfuric acid process but they are showing corrosion. I’m not sure why as I’m well below boiling and only using 40% concentration. There may be some downstream contaminants, but not much. Any ideas? A: It is most likely the contaminants that are causing … Continue reading →
Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy 625, Alloy C22, Alloy C276, C22, C276, Corrosion, corrosion resistance, Ferric chlorides, H2SO4, Hastelloy, Hastelloy C22, Hastelloy C276, Inconel, Inconel 625, oxidizers, oxidizing media, Sulfuric Acid, tantalum, Zirconium | Leave a comment
Posted on May 22, 2017 by dean
Q: I’m using hydrogen fluoride used in a manufacturing process to make refrigerants. I know it’s very corrosive and have tried both hastelloy and inconel fasteners, which I thought were super corrosion resistant. What am I doing wrong because the acid is still eating them? Should I try Tantalum? A: … Continue reading →
Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged aeration, Alloy 400, Fluoride layer, Fluoride passive layer, Hastelloy, HF, Hydrofluoric acid, Monel, Monel 400, oxidizing salts, tantalum | Leave a comment
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 →
Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Alloy 2507, Crevice Corrosion, Duplex, Duplex 2507, Geothermal drilling, geothermal exploration, geothermal well, Hastelloy, Inconel, pitting corrosion, SCC, Stress Corrosion Cracking, Super Duplex, Super Duplex 2507 | Leave a comment
Posted on May 2, 2017 by dean
Q: I’m running a semiconductor wet chemical etching process that utilizes 85 % phosphoric acid at around 150-160°C. I need a material that can withstand this process. Super Duplex hex bolts are not cutting it. A: At that particular concentration and temperature high performance nickel alloys like Hastelloy C276 bolts … Continue reading →
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 | 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 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 February 2, 2017 by dean
A lock nut resists loosening from vibrations and torque. Specialty material lock nuts offer the ideal solution to many extreme applications environments. They combine the unique properties of specialty materials, with the secure locking feature of a lock nut to prevent failures in the field.
Posted in Blog | Tagged 17-4PH lock nut, C276, Flexloc, Hastelloy, Hastelloy lock nut, Hastelloy nut, Inconel, Inconel 718, Lock Nut, Locknut, Nuts. 17-4PH nuts, Polymer Insert Lock Nut, prevailing torque lock nut | 5 Comments