AMPP Store - Products tagged with 'four-point bend test'

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09364 Large and Small Scale SCC Testing of 316L Clad at 135 C

Product Number: 51300-09364-SG

ISBN: 09364 2009 CP

Author: Stale Nodland, Philip Dent and Kamran Fatehi

Publication Date: 2009

$20.00

This work was undertaken to explore the possibility to extend the limits of 316L to higher temperatures. The large scale test consists of a full ring pipe which is stressed externally and exposed internally to the test fluid. The small scale tests are four-point-bend (4PB) tests in accordance with ISO15156-31 and EFC172.

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AMPP TM21451-2023, Evaluation of Carbon and Low-Alloy Steels for Resistance to Stress-Oriented Hydrogen-Induced Cracking (SOHIC)

Product Number: AMPP TM21451-2023

Publication Date: 2023

$109.00

Carbon and low-alloy steels in plate form and their welded products may be susceptible to one or more forms of environmental cracking when exposed to wet H₂S service conditions. These include, for example, (1) sulfide stress cracking (SSC) of hard zones and welds; (2) hydrogen-induced cracking (HIC) in the parent metal; and (3) stress-oriented hydrogen-induced cracking (SOHIC) in the region adjacent to welds of nominally acceptable hardness. Extensive work has been conducted over many years to understand various fundamental and applied aspects of these phenomena. Experiences in refinery wet H₂S operations have directed particular attention to understanding SOHIC and the various metallurgical and environmental parameters that govern its occurrence.

Scope

This standard was prepared to provide a test method for consistent evaluation of pipeline and pressure vessel steels to SOHIC caused by hydrogen absorption from aqueous sulfide corrosion. The test conditions are not designed to simulate any specific service environment. The test is intended to evaluate resistance to SOHIC only, and not to other adverse effects of sour environments such as sulfide stress cracking (SSC), pitting, or mass loss from corrosion.

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Sulfide Stress Cracking Test of TMCP Pipeline Steels in NACE MR0175 Region 3 Conditions

Product Number: 51320-14446-SG

Author: Xin Yue, Weiji Huang, Andrew J. Wasson, Jamey A. Fenske, Timothy D. Anderson, Brian D. Newbury, Doug P. Fairchild

Publication Date: 2020

$20.00

Steel pipelines are sometimes subjected to demanding sour environments resulting from the presence of high H2S contents. Pipeline materials, therefore, must be resilient against sulfide stress cracking (SSC) which is caused by H2S. Beginning in the 1980s, thermo-mechanically controlled processed (TMCP) steels have been widely used for the manufacturing of large-diameter sour service pipelines. The failure of the Kashagan pipelines in 2013 raised concern regarding the use of TMCP steels in sour environments. These concerns arise from the potential for local hard zones (LHZs) to be produced on the surface of the line pipe during TMCP processes, ultimately leading to through-wall SSC failures. In the present study, several X60 - X65 TMCP steels (both with and without LHZs) have been tested under different Region 3 (R3) conditions in the NACE MR0175/ISO15156-2 pH-H2S partial pressure diagram. It can be concluded that the presence of LHZs increases TMCP steels’ sour cracking susceptibility; however, TMCP steels without LHZs pass the SSC tests at even the most severe R3 environments. Traditional HRC or HV10 testing are not able to detect LHZs, and so lower load HV 0.5 or HV 0.1 tests are necessary. For TMCP steels, the current R3 may be further divided into R3-a and R3-b sub-regions. The sour cracking severity of R3-a is less than that of R3-b. Additional actions, like enhanced mill qualification of the TMCP plate, should be considered to ensure that no LHZs exist in steels to be utilized in R3-b environments.

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Systematic Investigation Of The Role Of Stress-Induced Pits And Grooves In SSC Four-Point Bend Testing Of Line Pipe Steel

Product Number: 51321-16571-SG

Author: Thomas Haase / Christoph Kalwa/ Christoph Bosch

Publication Date: 2021

$20.00

Products tagged with 'four-point bend test'

09364 Large and Small Scale SCC Testing of 316L Clad at 135 C

AMPP TM21451-2023, Evaluation of Carbon and Low-Alloy Steels for Resistance to Stress-Oriented Hydrogen-Induced Cracking (SOHIC)

Sulfide Stress Cracking Test of TMCP Pipeline Steels in NACE MR0175 Region 3 Conditions

Systematic Investigation Of The Role Of Stress-Induced Pits And Grooves In SSC Four-Point Bend Testing Of Line Pipe Steel

Association for Materials Protection and Performance