May 28th 2021

Langley Alloys engage with metals consultant

Langley Alloys are pleased to be working with Derek Horsburgh of Cadence Engineering Services, to develop further opportunities for our portfolio of corrosion-resistant alloys and comprehensive in-house services. Derek brings over 35 years experience of materials technology to our business, the majority of which has been gained within the Oil and Gas industry, working with […]

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Jan 27th 2021

The role of Nitrogen in improving corrosion resistance of stainless steels

During the early development of stainless steels, nitrogen would have been an unintentional alloying element. However, the advent of modern steelmaking processes such as AOD (argon oxygen decarburisation) and VOD (vacuum oxygen decarburisation) allowed its level to be carefully controlled.

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Jan 26th 2021

How does Nitronic® 50 compare with other alloys?

Nitronic 50 is an austenitic stainless steel, produced with an increased nitrogen content which improves its strength and corrosion resistance. This alloy is also widely referred to as XM19, which is the designation of the generic alloy caption in ASTM A276 and ASTM A479, as well as UNS S20910 or DIN 1.3964. Nitrogen, along with chromium and molybdenum all increase the Pitting Resistance Equivalent Number (PREN) to >34, which is a similar value as S32205 duplex stainless steel and way above low-alloyed grades.

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Jan 13th 2021

What are Duplex grades 1.4462, 1.4410, 1.4501 AND 1.4507?

DIN EN 1.4462, 1.4410, 1.4501 and 1.4507 are duplex and super duplex stainless steel designations used across multiple DIN, EN and ISO standards.

DIN stands for Deutsches Institut für Normung e.V., and it is the German national organisation for the creation and maintenance of around thirty thousand DIN Standards, covering nearly every field of technology. Most of the relevant DIN standards are incorporated in to Euronorm (EN) standards for adoption beyond just Germany.

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Jan 4th 2021

Langley Alloys in the ‘Spotlight’

Langley Alloys are pleased to be the spotlight feature of January 2021’s edition of Stainless Steel World News.   The series of interviews with various members of the Langley Alloys team highlighted developments taking place within the business. First and foremost, the upcoming relocation of our Houston USA business to a much larger site, better […]

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Dec 9th 2020

What is Inconel 625 used for?

Inconel 625 (UNS06625, 2.4856, BS3076 NA21) was originally developed in the 1960’s and has been widely used for more than 50 years in a multitude of demanding applications that require a combination of good strength, toughness, ease of fabrication, resistance to corrosion and a wide temperature operating range.

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Nov 26th 2020

What is Inconel 725 used for?

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

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Nov 24th 2020

Langley Alloys is to be part of the innovative Adv-Flow project consortium

The ‘Development of Advanced, Highly Corrosion Resistant Coriolis Mass Flow Meters (Adv-Flow)’ is an innovative research project supported by Innovate UK, led by KROHNE Limited, with partners TWI and Langley Alloys. The project will investigate advancements in the manufacture of large size Coriolis mass flow meters to meet demanding operating conditions. The project will focus on the development of a suitable manufacturing route to manufacture the flow meters from super duplex stainless steel.

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Nov 24th 2020

Machining of duplex and super duplex stainless steels

Duplex and super duplex stainless steels are considered by some to be harder to machine than other stainless steel grades. Whilst this may be true, it does not mean that they cannot be successfully machined in to intricate finished components, if the correct parameters are observed.

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Nov 18th 2020

What is Monel K-500 used for?

Monel™ K-500 (UNS N05500) is a nickel-copper alloy, age-hardened to achieve two to three times the strength of Monel 400. It retains these excellent mechanical properties up to about 650degC. It also exhibits excellent corrosion resistance in both chloride-containing and chemical environments. The combination of physical and mechanical properties means that it is widely used in a host of demanding applications.

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Nov 17th 2020

What are EGCS?

Exhaust gas cleaning systems (EGCS) are also referred to as marine scrubbers and are installed aboard large ships in order to reduce emissions from their large diesel engines.

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Nov 17th 2020

What is SWRO?

SWRO stands for seawater reverse osmosis. It is a filtration process, that can be applied at large-scale, to generate freshwater from seawater for industrial processes, irrigation and drinking water.  

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Jun 9th 2020

What is austenitic stainless steel?

The most well-known grades of stainless steel are the austenitic stainless steel grades 304 and 316. An austenitic stainless steel is so-called because of the crystal structure the atoms take when the composition and thermal processing conditions allow. The austenite crystal structure is also described as face centred cubic (FCC) and defines many of the mechanical and physical properties of the stainless steel.

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Jun 1st 2020

What is Inconel?

Inconel is a family of high-performance nickel-based alloys developed by Special Metals Corporation. It is one of the most widely recognised trademarks in the industry, associated with the original development of 18 different alloys.

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May 29th 2020

What is galling?

Galling is when two metal surfaces join unintentionally, caused by micro-welding across their surfaces at localised points of contact. This phenomenon is influenced by the surface condition (roughness), type of metal, environment, temperature and load exerted on the surface. Galling typically refers to the damage that occurs when breaking the items apart, with a tearing […]

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May 26th 2020

What is Alloy 904L?

Alloy 904L is a more highly alloyed austenitic stainless steel, based upon 20% chromium and 25% nickel content. It was developed for use in applications containing dilute sulphuric acid. The substantial nickel content means that Alloy 904L is a lot more expensive than regular stainless steels. Therefore, it has seen some substitution from more cost-effective super duplex stainless steels (SDSS).

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May 22nd 2020

Should I choose Annealed, Hot Rolled or Strain Hardened Condition of Nitronic 50?

Nitronic 50 is a higher-performance austenitic stainless steel that provides approximately twice the yield strength of regular 3xx series stainless steels and improved corrosion performance. It is widely used in a variety of marine and industrial applications. This alloy is available in several conditions, Solution Annealed, Hot Rolled or Strain Hardened.

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May 21st 2020

What is duplex steel?

A duplex steel is one that has a mixture of two different metallurgical phases within its microstructure. Although many different grades of steel possess two or more different phases, the term duplex is used almost exclusively for a family of stainless steels that combine austenitic and ferritic phases.

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May 20th 2020

Properties of Inconel 625

Inconel 625 (Alloy 625, UNS N06625, 2.4856) is a nickel-based alloy that provides good levels of strength and excellent corrosion resistance at elevated temperatures. Its composition is predominantly nickel (58% min.), with additions of chromium, then lesser amounts of molybdenum, niobium, iron, tantalum, cobalt, and trace amounts of manganese, silicon, aluminium, and titanium. Inconel 625 […]

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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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May 12th 2020

High Strength Copper Alloys

Copper has many desirable physical properties, such as excellent thermal and electrical conductivity, plus strong corrosion resistance in marine and selected chemical environments. In its unalloyed form, mechanical properties are not particularly high. However, it is readily alloyed with numerous other metals to greatly improve the level of strength achievable. Nickel and copper can be […]

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May 6th 2020

Super duplex stainless steel fasteners

Super duplex stainless steels are well-suited to the production of fasteners for industrial applications, due to their unique combination of strength, corrosion resistance and cost-effectiveness. Duplex stainless steels combine the most favourable properties of austenitic and ferritic stainless steels, namely good strength and toughness; relative ease of fabrication; plus they are highly resistant to corrosion […]

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May 5th 2020

High Temperature Nickel Alloys

Nickel is the fifth most common element on earth, but its use was limited commercially until the last century due to the difficulties in extracting and refining it. Since that time, the development of the jet engine was a major catalyst for the development of nickel-based alloys, in order to provide metals that could combine […]

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May 1st 2020

Nitronic 60

Nitronic® 60 (Fermonic 60, UNS21800) is an austenitic stainless steel with incredibly useful physical properties, specifically wear and galling resistance. It is therefore specified for a number of demanding applications despite possessing more modest corrosion resistance and strength compared with alternative alloys.

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Apr 30th 2020

Incoloy 925

Incoloy 925 (Alloy 925, UNS N09925) is a Nickel-Iron-Chromium Alloy that significantly improves upon the strength of Incoloy 825 (Alloy 825, UNS N08825, 2.4858) whilst retaining its favourable corrosion resistance, particularly against sulphuric acid. It is supplied in the aged condition.

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Apr 29th 2020

The welding of stainless steels

Stainless steels are considered to have good weldability compared to many other metals, and can be successfully welded by a number of different techniques with the correct settings and conditions.

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Apr 27th 2020

Inconel 625

Inconel 625 was developed in the 1960’s and achieves reasonably high strength through the addition of molybdenum and niobium to the nickel-chromium base. This imparts solution-strengthening, meaning that no additional heat treatment stage is required. It can comfortably be used up to 650degC with little loss of mechanical properties, and actually retains much of its strength up to 800degC and down to cryogenic temperatures.

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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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