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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