Tag Archives: tungsten screws for high temperature

Coefficient of Thermal Expansion (CTE): TZM vs Tungsten

Posted on April 14, 2021 by Kathleen

Q: I’m working with a high temperature, bi-metallic bolted flange design. The steady state temperature of the flange is 1400 degrees F. The bolt is TZM, which has a lesser CTE than the thru-hole material. I’m looking for a material with a CTE less than TZM to use as a … Continue reading →

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Choosing a Refractory Metal Fastener

Posted on May 16, 2019 by dean

What is a refractory metal fastener? Molybdenum, tantalum, tungsten and zirconium are all refractory metals. (We are excluding titanium from this topic although it can be considered a refractory metal by certain definitions). All these refractory metal fasteners are characterized by their high-temperature melting points, but they also have other … Continue reading →

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