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The compatibility of the material of pressure vessels, pipelines and their components used in the production, storage and transport of hydrogen is of great importance for safety and long-term use. Therefore, manufacturers of pressure equipment, pipework and other components must …
This article provides an overview of duplex material specifications for pressure equipment applications. Compared with some other materials, Standard Duplex Steels and Super Duplex Stainless Steel are less costly material of construction offering high mechanical strength, good weldability, good toughness …
Stress corrosion cracking (SCC) is characterized by cracks propagating either transgranularly or intergranularly (along grain boundaries). Chlorides are widely present in many industrial and natural environments, such as seawater. When metal alloys are exposed to these environments, they can become …
The PREN (Pitting Resistance Equivalent Number) for duplex steels is an important parameter for classifying duplex steels also from the point of view of corrosion resistance, such as chloride stress corrosion cracking (SCC). Duplex materials have evolved in recent decades …
Weldolet fittings – the Branch Connection Fittings are also named as Outlet fittings. Outlets are a family of forged products used to make 90 degree or 45 degrees integrally reinforced branch connections from a header pipe or run pipe to an outlet pipe or …
Carbon steel process plant that operates with hydrogen at elevated pressure and temperature can be weakened by a phenomenon known as high temperature hydrogen attack (HTHA). The effect of hydrogen on carbon steel and its alloys has been known for some …
Piping in acc. to ISO 3183 and API SPEC 5L must be evaluated with regard to their suitability for the use of hydrogen. Additional test procedures at qualifications of line pipes are required. Specifications and standards Specifications and standards for …
The infrastructure for hydrogen storage and transportation needs to be safely used for a carbon-neutral society. One of the most important issues for the integrity of a hydrogen system is material degradation caused by hydrogen. It is well understood that …
The hydrogen induced cracking of steels takes place according to different processes. Both the environmental conditions and other influences such as stresses and the microstructure of the steels have an effect. In technical applications, a number of technical terms have …
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