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ssc

Is it a pit or is it a crack?

January 16, 2019 by Mariano Iannuzzi

This article describes current industry practices to catalog features observed after sulfide stress cracking testing. The article also introduces a quantitative criterion to determine the maximum allowable defect size based on fracture mechanics principles.

Filed Under: Sulfide Stress Cracking Tagged With: low alloy steels, Oil&Gas, ssc, sulfide stress cracking

The history of NACE MR-0175, ISO 15156, and the 1% nickel limit – Timeline

May 21, 2017 by Mariano Iannuzzi

This blog entry presents the development of the NACE MR-0175 in a historical perspective alongside research advancements in physical metallurgy and sulfide stress cracking.

Filed Under: Environmentally Assisted Cracking, Hydrogen Embrittlement, Oil & Gas, OpenLab!, Sulfide Stress Cracking, Timelines Tagged With: iso 15156, sour service, ssc, sulfide stress cracking, timelines

Is sulfide stress cracking an anodic or a cathodic process?

February 19, 2017 by Mariano Iannuzzi

Is sulfide stress cracking an anodic or a cathodic process? Does hydrogen play a role or is SSC controlled by anodic dissolution? Find out in this post!

Filed Under: Low alloy steels, Oil & Gas, Sulfide Stress Cracking Tagged With: environmental cracking, low alloy steels, Oil&Gas, SCC, ssc, sulfide stress cracking

Are cracks born from pits?

January 31, 2016 by Mariano Iannuzzi

This article describes the different forms of environmentally assisted cracking that can affect low alloy steels and corrosion resistant alloys in the oil & gas industry.

Filed Under: Low alloy steels, Stress corrosion cracking, Sulfide Stress Cracking Tagged With: corrosion resistant alloys, CRA, hydrogen, hydrogen embrittlement, Hydrogen Stress Cracking, las, low alloy steels, Oil&Gas, SCC, ssc, sulfide stress cracking

Corrigendum – Sulfide stress cracking of nickel-containing low-alloy steels

March 8, 2015 by Mariano Iannuzzi

Corrigendum of our paper entitled: “Sulfide stress cracking of nickel-containing low-alloy steels”.

Filed Under: Announcements, Journal Articles, Sulfide Stress Cracking Tagged With: EAC, hydrogen embrittlement, Hydrogen Stress Cracking, low alloy steels, materials selection, nickel alloy steels, Oil&Gas, publications, ssc

ISO 15156-3 will set new restrictions on UNS S174000 (17-4PH)

October 22, 2014 by Mariano Iannuzzi

This article describes the results of a recent NACE MR0175/ ISO 15156 ballot that imposes stringent maximum allowable stress values.

Filed Under: Announcements, ISO, Stainless steels, Sulfide Stress Cracking Tagged With: CRA, HSC, hydrogen embrittlement, Hydrogen Stress Cracking, iso 15156, NACE, Oil&Gas, SCC, sour service, ssc, stainless steels, Stress Corrosion Cracking, sulfide stress cracking

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