Asset management strategy for HAZ cracking caused by sigma-phase and creep embrittlement in 304H stainless steel piping

2020 ◽  
Vol 110 ◽  
pp. 104452 ◽  
Author(s):  
Philip Jordan ◽  
Chris Maharaj
Keyword(s):  
Stainless Steel ◽  
Asset Management ◽  
Management Strategy ◽  
Sigma Phase ◽  
Haz Cracking ◽  
Steel Piping

DETECTION OF THE SIGMA PHASE IN A DUPLEX STAINLESS STEEL THROUGH MEASUREMENTS OF MAGNETIC PERMEABILITY

2019 ◽  
Author(s):  
Edgard Silva ◽  
Francisco Eduardo Mendes da Silva ◽  
Amanda Medeiros ◽  
Ana Paula Alves Pacheco ◽  
IZAURA VIEGAS ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Magnetic Permeability ◽  
Sigma Phase

ACI TYPE HP

Alloy Digest ◽  
1975 ◽  
Vol 24 (3) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Sigma Phase ◽  
Heat Treating ◽  
Steel Mill ◽  
Temperature Performance ◽  
Formation Type ◽  
Rupture Properties ◽  
Roll Service ◽  
Iron Chromium

Abstract Type HP is an iron-chromium-nickel alloy with a combination of elements that makes it resistant to both oxidizing and carburizing atmospheres at high temperatures. The alloy has good creep-rupture properties in the 1800-2000 F temperature range. It has an austenitic structure at all temperatures, thus it is not susceptible to embrittlement from sigma phase formation. Type HP was developed for rugged steel-mill furnace-roll service; no comparable wrought alloy exists. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-307. Producer or source: Stainless steel foundries.

Evaluating the Hydrogen Embrittlement Susceptibility of Aged 2205 Duplex Stainless Steel Containing Brittle Sigma Phase

2021 ◽  
Author(s):  
Loyslene Rabelo Fernandes ◽  
Lisa Claeys ◽  
Margot Pinson ◽  
Tom Depover ◽  
Dagoberto Brandão Santos ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Hydrogen Embrittlement ◽  
Duplex Stainless Steel ◽  
Sigma Phase ◽  
2205 Duplex Stainless Steel

scholarly journals Defect characterization in pipe-to-pipe welds in large-diameter stainless-steel piping

1994 ◽  
Vol 33 (2) ◽  
pp. 155-162 ◽  
Author(s):  
D.E. Rawl ◽  
S.L. West ◽  
D.A. Wheeler ◽  
M.R. Louthan
Keyword(s):  
Stainless Steel ◽  
Large Diameter ◽  
Defect Characterization ◽  
Steel Piping

Inspection and mitigation for pitting corrosion on stainless steel process piping to prevent process safety event and loss production opportunity in Medco E&P

2021 ◽  
Author(s):  
I. Rosyadi
Keyword(s):  
Stainless Steel ◽  
Pitting Corrosion ◽  
Sun Exposure ◽  
Passive Layer ◽  
Process Safety ◽  
Pipe Surface ◽  
Corrosion Propagation ◽  
Process Piping ◽  
Safety Event ◽  
Steel Piping

Stainless steel piping has excellent corrosion resistant properties, both internal or external piping surface. In humid circumstances, sea vapor containing chlorine will be trapped on the pipe surface, especially pipes below deck with minimum sun exposure (more humid). Chlorine on the external pipe surface will damage the passive layer of stainless steel pipe. Damage speed is faster than recovery of passive layer stainless steel. This condition lead to a lot of localized pitting corrosion spread. The corrosion was detected visually and carried out with dye penetrant inspection to assure pitting condition. Actual dimension of pitting (depth, diameter) cannot be measured due to limitation of the NDE technique. This pitting corrosion can result hydrocarbon leakage as a process safety event that contributes loss of production opportunity. Without modification circumstances, this condition can be stopped immediately by application of a viscos elastic coating to prevent pitting corrosion propagation. Application of viscos elastic coating is simpler and faster when compared to conventional coating. Viscos elastic coating will protect stainless steel piping surface against oxygen and chloride in humid circumstances so that stainless steel can recover passive layer and stop pitting corrosion.

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