Q: I work in the fusion technology field, specifically in a plasma physics laboratory. We are currently using a large number of A-286 screws. The screws have to withstand the high pre-loads required to insure the ultra high vacuum tightness of our facilities (generating stresses in the screws of up … Continue reading

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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

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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

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hose-industrialthumbnailExtreme bolt 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

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hastelloy-grades_smallHastelloy 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

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Which way to go?These two alloys are often confused as being almost the same, which is almost true. They are both nickel alloys and share many key characteristics. AL6XN and Alloy 20 are alike in that they each retain their strength to about 1000°F. In addition they both perform well, in salt water environments, … Continue reading

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inconel-vs-monelThey rhyme, are both used in extreme environments, and are both nickel metal alloys, but Monel and Inconel are actually very different. But how? Let’s start with basic chemistry. Monel is a nickel-copper alloy and Inconel is a nickel-chromium alloy. So what does that mean for your extreme application? We … Continue reading

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cold-weldThread galling is a common yet a seldom understood fastener problem seen by engineers and fabricators. It occurs when pressure and friction cause bolt threads to seize to the threads of a nut or tapped hole. The fasteners are not just overly tight but “cold/contact” welded together. Continue reading

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625-vs-718Inconel fasteners are commonly used for extreme environments and come in various “flavors” depending on the needs of the application. This brief paper will give you a quick comparison of the two most popular grades, Inconel 625 and Inconel 718 to help you choose the best material. Continue reading

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lock-nut-pic-1A 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. Continue reading

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star-wars-x-wing-fighterNASA has been designing rockets and manned space ships for over 50 years, but nothing like the innovation needed to build a light-speed, fighter spacecraft. At Extreme Bolt, we supply the aviation industry with a diversity of fasteners made from extreme materials. Though Star Wars is a fictitious story, it … Continue reading

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vacfurnaceVacuum furnaces offer engineers a unique processing environment: high temperatures, controlled atmospheres, and rapid cooling. This low contamination environment is perfect for brazing, sintering, and heat treatment. Due to the constant extreme temperatures (typically 1,100–1,500°C), choosing the right fastener material can be a challenge. This brief paper will give you an overview on what high … Continue reading

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So you’ve heard the term, but what is it? Technically, it is a method in which an alloy’s structural matrix is altered on an atomic level by using temperature change to enhance the material’s mechanical properties – increasing the yield and tensile strength. Simply, it is a way to further strengthen a material. It is … Continue reading

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measureTension, Not Torque Matters: How to Measure Bolt Tension In our last post, we discussed how measuring torque is an inaccurate way of getting the right bolt tension.  In fact, a brand new bolt will require +/-40% torque to achieve the same tension as another new bolt out of the … Continue reading

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tension(Stay tuned next week for Part 2 – How to Measure Tension) Everyone is always concerned about getting the right torque. Regularly, customers contact  us requesting material torque charts.  Everyone is so concerned about what they are setting their torque wrench to, that they are missing what matters most: getting the right … Continue reading

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seawater picWith over 30% of marine equipment failures being the result of marine corrosion, the subsequent costs have added up; now seawater corrosion costs are estimated at 4 % of the GNP. Unfortunately, sea water is not a simple medium because it is chemically and biologically active, which can have an … Continue reading

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Fasteners for Hydrochloric AcidWhile hydrochloric acid (HCl) is a common and critical industrial chemical, it often causes significant maintenance issues for fasteners. Due to elevated temperatures, fluctuating concentrations and permeation of its vapors, utilizing the correct material for your fasteners is key to withstanding this potent acid. This article will briefly review some … Continue reading

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A286 , Super Duplex, 17-4PH AlloysWhile 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. Continue reading

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Fasteners For High TemperaturesAt elevated temperatures of beyond 1000°F, fasteners face a variety of complications which impact their performance. In this article, we will look at some common problems related to elevated temperatures and make recommendations of the best materials to address them. Continue reading

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Fasteners for Sulfuric AcidSulfuric Acid (H2SO4) is one of the most widely used and industrially important acids in modern society, being an essential component in the production of polymers, fuels, pharmaceuticals,  electronics, and mining. While sulfuric acid is commonly used, enabling fasteners to survive in this environment is not always an easy task. To help you tackle this feat, … Continue reading

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Underwater pipeline.Titanium fasteners are well known for their amazing combination of high strength and lightness of weight, but a lesser known characteristic of titanium is its unique corrosion resistance. Continue reading

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Fastener ultimate tensile strength versus yield strengthOne of the most common questions we get at Extreme Bolt & Fastener is “Which material is stronger?” People instinctively would like to compare the tensile strengths of various specialty metal fasteners to get the strongest one for their application.  While this may seem like a reasonable thing to do, … Continue reading

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Titanium Fastener GradesAll titanium grades are not created equal…And with over 40 grades of titanium alloys available, it may be a bit overwhelming to choose the best titanium grade for your unique and challenging application. But don’t worry, we are here to help… Continue reading

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ConfusedChoosing the right specialty polymer fastener for your corrosive application can be a confusing task.  There are numerous material options, puzzling polymer acronyms and generally too much information.  However, understanding the general chemical resistance of polymers will put you in a better position to make the best choice for your … Continue reading

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