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NACE Specifications for Ti

The combination of stress corrosion resistance, low density, low modulus and non-magnetic properties possessed by titanium alloys makes many of them suitable for service in sour conditions. Titanium has been successfully used in a variety of sour service applications in the drilling, logging and production phases of the oilfield industry. Sour service environments are defined by NACE International specification MR0175 as "fluids containing water and hydrogen sulphide (H2S) that is at a total pressure of 0.4MPa (65psia) or greater, and if the partial pressure of hydrogen sulphide in the gas is greater than 0.0003MPa (0.05psia)". The acidity of the environment is below pH 3.5, and carbon dioxide, and chlorides are also normally present. Titanium alloys are available in a range of strength levels, and this permits selection for a wide variety of oilfield and geothermal applications including pipework, manifolds, valves and pumps, chokes, kill and booster lines, instrument casi...

Minimize Hydrogen in Steel

Hydrogen in steel is bad news for mechanical properties and the metal's chemical characteristics. A recent Key to Steel article details the chemistry of hydrogen problems. The feature also discusses the sources of hydrogen pick up in steel production from the addition of materials and components, such as lime and coke.  

Can Elliptical Holes in Bridge Beams Stem Cracking?

Albany Times Union State transportation engineers are watching closely to see whether four experimental holes cut in the steel of the Patroon Island Bridge will lead to a solution for a persistent problem with cracking on the bridge's floor beams. Workers suspended beneath the westbound lanes cut elliptical holes in two floor beams in an effort to help increase bridge flexibility.

New database on the properties of solid materials

The National Institute of Standards and Technology has published a new database on the properties of solid materials at temperatures ranging from cryogenic to room temperature. Officially known as NIST Standard Reference Data Database #152, the Cryogenic Materials Properties Database is available online, free of charge. Learn more .

Websites: Quick Reference

An exhaustive list of links related pressure vessels, engineering & Construction related for your ready reference. (Most of them related to UK , but useful)   Request to members: when browsing these sites, and if you any good info which is interesting you may share in the forum for the benefit of members, else a link to the topic if the file is big   Thanking you for your cooperation!   Organizations and associations   Organization                                                                        URL   AEA Technology plc           ...