Inconel Alloy X750 Faseners

The extremely high strength and corrosion resistance of Inconel 725 make it well-suited to a range of high-performance applications in demanding environments, Inconel Alloy X750 Fasteners manufacturers  Deal in components of Oil & Gas equipment, naval and marine components, aerospace, pollution control and the chemical processing industry.

Difference Between Inconel Alloy X750 Fasteners and Inconel 625:

Inconel Alloy X750 Fasteners (Alloy 725, UNS N07725) is practically identical to Inconel 625 (Alloy 625, UNS N06625, 2.4856) in terms of composition, and therefore provide very similar corrosion resistance and physical properties. However, Alloy 725 provides significantly higher levels of strength as it benefits from precipitation strengthening.

Inconel 625 was seen to develop increased strength upon heat treatment, and this phenomenon was enhanced by further additions of titanium. These small additions encourage the formation of microscopic precipitates when the alloy is subjected to an extended heat treatment process, effectively doubling the yield strength compared with Inconel 625.

As Inconel 725 gains its strength by heat treatment and not by cold working, its ductility and toughness remain high. As a consequence, the smallest diameters are most used in the production of fasteners, with slightly larger sizes being used for complementary fixings.Langley Alloys carries an extensive stock of Alloy 725 from 1” (25.4mm) to 4” (101.6mm) diameters, with larger diameters available to order.

Properties and Applications of Inconel Alloy X750 Fasteners :

High strength and resistance to seawater corrosion make Inconel 725 a good candidate for marine components in naval and submarine systems. It has a pitting resistance equivalent number (PREN) of >45, and so will provide high levels of resistance to pitting and crevice corrosion. It can be considered an upgrade for Monel K-500 (Alloy K-500, 2.4375) which has been widely used in marine construction for many years.

This grade has been used in combination with less corrosion resistant metals by the US Navy amongst others, meaning that cathodic protection has been used to extend the operating lifetime of alloy steels. However, occasional failure of the Alloy K-500 items has been linked with hydrogen embrittlement as well as accelerated corrosion from galvanic interaction with more noble metals.

Inconel Alloy X750 Fasteners overcomes this risk and provides an uplift in terms of strength and toughness too. It has been used as shafts for the control of glide planes, and other exposed structural elements.