AMPP Store - Products tagged with 'low alloy steel'

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From Pits To Cracks: A Review Of 45-Years Of Published Research On Surface Trenches In Low Alloy Steels Exposed To H2S-Containing Environments

Product Number: 51322-17957-SG

Author: Dannisa R. Chalfoun, Teresa E. Perez, Mariano Iannuzzi, Mariano A. Kappes

Publication Date: 2022

$20.00

Carbon and low alloy steels (CS and LAS, respectively) used for exploration and production in the oil and gas (O&G) industry are normally exposed to environments that may contain H₂S in a wide range of concentrations. In aqueous solutions, H₂S acts as a cathodic poison.^1,2 A cathodic poison inhibits the recombination of atomic hydrogen to H₂, and as a result, favors its absorption by the metal.^1,2 In the presence of a susceptible microstructure and the simultaneous effect of applied or residual tensile stress, a crack can nucleate and propagate, when a critical concentration of hydrogen is reached in the metal.³ This environmentally assisted cracking (EAC) phenomenon is known as Sulfide Stress Cracking (SSC).² SSC is commonly addressed as a case of hydrogen embrittlement (HE) damage.²

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Investigation of Platformer Reactor Nozzle Cracking

Product Number: MPWT19-15243

Author: Pranav Agrawal, Abdulla Ali Juma

Publication Date: 2019

$0.00

This paper details with the unexpected cracking encountered in the outlet nozzles of all three reactors for Platformer unit, during a scheduled shutdown. The unit was commissioned in 1957 and the reactors metallurgy is as per withdrawn ASTM standard, A301 Gr. B (1Cr-1/2Mo). The isolated cracks were located at the upstream edge of the inset nozzle and running vertically down. The cracking in the high-pressure fixed bed reactor outlet nozzles was successfully repaired in-situ. This paper reviews the circumstances which led to these failures and highlights the lessons learned from each failure.

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Materials and Corrosion Risk Mitigation Associated with Flowback of Acid Stimulation Fluids

Product Number: 51317--8917-SG

ISBN: 8917 2017 CP

Author: Sandra Hernandez

Publication Date: 2017

$20.00

Acid stimulation is a growing practice in the deep water subsea environment. Two acids were tested, one of hydrofluoric and acetic acids and another of hydrofluoric, hydrochloric, and acetic acids. Results and outlines recommendations for different alloys are presented.

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REQUIREMENTS FOR LOW ALLOY STEEL PIPING ATTACHMENT WELDS

Product Number: MPWT19-15315

Author: Ameer Hamza, Jignesh Desai, Jan-Willem Rensman, Mark Van Den Broek, Kuntak Daru

Publication Date: 2019

$0.00

Proper design and fabrication, heat treatment and inspection practices play a vital role in achieving good quality and performance of low alloy steel piping. These materials have narrower fabrication windows as the alloy content goes up and non-adherence to correct execution practices may lead to leakage by delayed hydrogen cracking, stress corrosion cracking or fatigue resulting in unplanned shutdowns and costly repairs.
This paper describes details about strengths and weaknesses of support design and fabrication practices for such attachment welds. The paper discusses various precautions to be taken during the design and fabrication stages for low alloy steel supports attachment welds. It will discuss heat treatment cycles viz. preheat, interpass, dehydrogenation treatment (post heating) and post weld heat treatment (PWHT). The control of consumables, welding environment conditions, and the weld heating cycle is essential to prevent hydrogen assisted cold cracking in high hardness microstructures in weld and HAZ, and for achieving successful relief of residual welding stresses.

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Study of High Strength Low Alloy Steel OCTG with High Carbon Contents for Mildly Sour Service

Product Number: 51317--9051-SG

ISBN: 9051 2017 CP

Author: Yuji Arai

Publication Date: 2017

$20.00

For development of further high-strength low-alloy steel OCTG for sour service, effects of carbon content on the strength, microstructure, and sulfide stress cracking (SSC) resistance of low-alloy steel were fundamentally investigated.

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The Influence of Electrochemical Potential and Stress-Level on Trench Nucleation on Ni-Bearing Low Alloy Steels in Sour Environments

Product Number: 51323-19030-SG

Author: Dannisa R. Chalfoun, Mariano A. Kappes, Teresa E. Perez, Mariano Iannuzzi, José Luis Otegui, Ricardo M. Carranza

Publication Date: 2023

$20.00

The presence of trenches on low alloy steels (LAS) in sour environments at the open circuit potential (OCP) has been reported since 1977. Originally, they were classified as deep and elongated localized corrosion pits. Recently, many authors have referred to them as “stress-induced grooves.

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Weldability And Corrosion Properties Of Austenitic Stainless Steel And Low Alloy Steel Manufactured Using PM-HIP Method

Product Number: ED22-18347-SG

Author: Gidong Kim, Seunghyun Kim, Kang-myung Seo, Yong-joon Kang, Sang Woo Song

Publication Date: 2022

$20.00

Powder metallurgy with hot isostatic pressing (PM-HIP), which enables to densify powders in a furnace at high pressure and temperature is a newly developed manufacturing process for pressure retaining part in nuclear industry. It has advantages such as weld free near-net shape products, improved material properties for castings, short process time, saving in raw material costs, etc. EPRI have conducted several tests such as tensile test, impact test, chemical composition analysis on the manufactured samples for pressure retaining applications.

Products tagged with 'low alloy steel'

From Pits To Cracks: A Review Of 45-Years Of Published Research On Surface Trenches In Low Alloy Steels Exposed To H2S-Containing Environments

Investigation of Platformer Reactor Nozzle Cracking

Materials and Corrosion Risk Mitigation Associated with Flowback of Acid Stimulation Fluids

REQUIREMENTS FOR LOW ALLOY STEEL PIPING ATTACHMENT WELDS

Study of High Strength Low Alloy Steel OCTG with High Carbon Contents for Mildly Sour Service

The Influence of Electrochemical Potential and Stress-Level on Trench Nucleation on Ni-Bearing Low Alloy Steels in Sour Environments

Weldability And Corrosion Properties Of Austenitic Stainless Steel And Low Alloy Steel Manufactured Using PM-HIP Method

Association for Materials Protection and Performance