May 15th 2020

Metals for Thermowells

A thermowell is a fitting designed to protect sensors when they are installed in aggressive environments in industrial applications. The thermowell will protect the sensor from impact, corrosion, oxidation, pressure and general damage. The most common designs of thermowell are sized to fit thermometers, thermocouples or resistance temperature detectors. The process fluid transfers heat to the […]

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Apr 24th 2020

The role of copper in improving corrosion resistance of stainless steels

Copper is normally present in stainless steel as a residual element only. However, it is added to selected alloys in order to enhance their corrosion resistance, particularly in seawater and sulphuric acid solutions. For many years, copper has been seen as an undesirable element within steel production. It has been associated with ‘hot shortness’, where […]

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Apr 23rd 2020

The role of molybdenum in improving corrosion resistance of stainless steels

The most common application of molybdenum is in the production of stainless steels and nickel-based alloys. Molybdenum is widely understood to improve the resistance to pitting corrosion of stainless steels, and therefore is a key alloying element in their composition. Duplex, super duplex and austenitic stainless steels within Langley Alloys stock range all utilise molybdenum.

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Apr 21st 2020

Which specifications apply to Alloy 718?

Alloy 718 (Inconel 718, UNS N07718, 2.4668) has become widely used in a large number of applications, due to its high levels of performance, plus ready availability in a variety of product forms. Nickel-chromium alloys are probably the most widely used nickel-based alloys. They are characterised by their excellent corrosion resistance at both ambient and […]

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Apr 17th 2020

Inconel 718

Nickel-chromium alloys are probably the most widely used nickel-based alloys. They are characterised by their excellent corrosion resistance at both ambient and elevated temperatures – forming a protective film that prevents further oxidation and retention of their mechanical properties over a wide temperature range. They are better known by the Special Metals Corporation tradename Inconel®, […]

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Apr 17th 2020

Incoloy 825

Incoloy® 825 (UNS N08825/W.Nr. 2.4858) is a nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium. The Incoloy family of alloys are all based upon a nickel-iron-chromium base composition, but with a varying number of additional alloying elements. They were originally developed and produced by the Special Metals Corporation group of companies, which includes the […]

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Apr 16th 2020

New Guide to Duplex and Super Duplex Stainless Steels

Would you like to know more about super duplex stainless steels? How about learning when and where super duplex stainless steels can be used? Interested to read more about how to fabricate, weld and machine super duplex stainless steels? If you’re already expert in these unique alloys, then we’re probably already working together, directly or […]

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Aug 30th 2019

What are duplex grades F51, F53, F55, F60 and F61?

F51, F53, F55, F60 and F61 are duplex and super duplex stainless steel designations taken from ASTM A182. This standard is one of the most widely referenced standards for the supply of stainless steels. The American Society of Testing and Materials (ASTM) is one of the world’s largest standards organisations, reviewing, collating and publishing technical […]

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Aug 30th 2019

Super Duplex less impacted by Ni price increases

The production of all metals is subject to pricing pressure. Inflation, energy costs and employee wages are variables that affect all industrial producers. However, other consumables and raw materials have proven more volatile. The pricing of super duplex stainless steels is inherently less volatile than for nickel alloys. Graphite electrode surcharge In recent years, steel […]

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