Tag Archives: vacuum

Polymer screw for high vacuum, usable to 150C

Posted on June 27, 2017 by dean

Q: I have an application where I need pan head, insulating, high vacuum compatible, screw. It will also need to be usable at a service temperature up to 150C. Do I need a ceramic? A: Though ceramics are excellent insulators, they are usually only used for high temperature applications, where … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, Engineered Polymer Fasteners, FAQs, Non-Conductive, Technical Questions | Tagged , , , , | Leave a comment

Embrittlement of Tantalum bolts at high temperatures

Posted on June 8, 2017 by dean

Q: I chose Tantalum bolts for their corrosion resistance and high temperature capabilities and they are breaking. I’m running an application that fluctuates between 350 Celcius where there could be concentrated sulfuric acid contamination. I thought these would be excellent with high temperature acid exposure. Can you help me? I … Continue reading →

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

Molybdenum screws temperature limit explained

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 →

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Bolts for high temperature vacuum furnace: Metal vs. Ceramic

Posted on February 8, 2017 by dean

Q: I’m using a high temperature vacuum furnace at 2500F. What type of material do you suggest using and is there any advantage of using a metal over a ceramic? A:   Under vacuum conditions with little to no oxygen present, there are some metallic options for fasteners which include … Continue reading →

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Fasteners for Vacuum Furnaces: What Material Is Best?

Posted on December 7, 2016 by dean

Vacuum 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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