Swelling results from helium-pressurized 304L stainless steel tubes

Before being put to use, a new condenser of 600 MW unit was found corrosion leakage of a large number of 304L stainless steel tubes during the water leakage test. Through field investigation, sampling, chemical composition and mechanical properties test, metallographic analysis, corrosion area surface morphology and micro area component analysis, corrosion reasons were analyzed. The main reason for corrosion is improper installation. Stainless steel tubes were polluted by rain, soil, welding slag during the installation process. Carbon steel members cut the tubes when wore tubes, and was placed in such condition for a too long time. Moreover, the electric current occurred in repair welding with water may accelerate pitting holes.

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Hybrid laser/arc girth welding of 304L stainless steel tubes, part 1 – Pore mitigation, thermal analysis and mechanical properties

International Journal of Pressure Vessels and Piping ◽

10.1016/j.ijpvp.2018.05.003 ◽

2018 ◽

Vol 163 ◽

pp. 75-93 ◽

Cited By ~ 7

Author(s):

Nima Yazdian ◽

Masoud Mohammadpour ◽

Fanrong Kong ◽

Radovan Kovacevic

Keyword(s):

Mechanical Properties ◽

Thermal Analysis ◽

Stainless Steel ◽

304L Stainless Steel ◽

Steel Tubes ◽

Girth Welding

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Electrochemical investigation of pickled and polished 304L stainless steel tubes

Corrosion Science ◽

10.1016/s0010-938x(99)00144-4 ◽

2000 ◽

Vol 42 (8) ◽

pp. 1457-1469 ◽

Cited By ~ 10

Author(s):

D. Wallinder ◽

J. Pan ◽

C. Leygraf ◽

A. Delblanc-Bauer

Keyword(s):

Stainless Steel ◽

304L Stainless Steel ◽

Electrochemical Investigation ◽

Steel Tubes

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Pyrolytic carbon filaments and associated catalytic particles formed in steel tubes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100113196 ◽

1984 ◽

Vol 42 ◽

pp. 662-663

Author(s):

Y. L. Chen ◽

J. R. Bradley

Keyword(s):

Stainless Steel ◽

Carbon Steel ◽

Catalyst Particle ◽

Pyrolytic Carbon ◽

Plain Carbon Steel ◽

304 Stainless Steel ◽

Hydrocarbon Gases ◽

Steel Tubes ◽

Filamentous Carbon ◽

Carbon Filaments

Considerable effort has been directed toward an improved understanding of the production of the strong and stiff ∼ 1-20 μm diameter pyrolytic carbon fibers of the type reported by Koyama and, more recently, by Tibbetts. These macroscopic fibers are produced when pyrolytic carbon filaments (∼ 0.1 μm or less in diameter) are thickened by deposition of carbon during thermal decomposition of hydrocarbon gases. Each such precursor filament normally lengthens in association with an attached catalyst particle. The subject of filamentous carbon formation and much of the work on characterization of the catalyst particles have been reviewed thoroughly by Baker and Harris. However, identification of the catalyst particles remains a problem of continuing interest. The purpose of this work was to characterize the microstructure of the pyrolytic carbon filaments and the catalyst particles formed inside stainless steel and plain carbon steel tubes. For the present study, natural gas (∼; 97 % methane) was passed through type 304 stainless steel and SAE 1020 plain carbon steel tubes at 1240°K.

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RELAXATION PEAKS OF COLD WORKED 304L STAINLESS STEEL

Le Journal de Physique Colloques ◽

10.1051/jphyscol:1981530 ◽

1981 ◽

Vol 42 (C5) ◽

pp. C5-193-C5-198 ◽

Cited By ~ 4

Author(s):

N. Igata ◽

H. B. Chen ◽

K. Miyahara ◽

T. Uba

Keyword(s):

Stainless Steel ◽

304L Stainless Steel ◽

Cold Worked

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Properties of laser welded stainless steel tubes

International Congress on Applications of Lasers & Electro-Optics ◽

10.2351/1.5058025 ◽

1988 ◽

Cited By ~ 1

Author(s):

Masashi Koso

Keyword(s):

Stainless Steel ◽

Steel Tubes

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CARPENTER PROJECT 70+ TYPE 304/304L

Alloy Digest ◽

10.31399/asm.ad.ss0875 ◽

2003 ◽

Vol 52 (2) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Physical Properties ◽

Heat Treating ◽

General Purpose ◽

304L Stainless Steel ◽

Type 304 ◽

Complex Parts

Abstract Carpenter Project 70+ Type 304/304L is a modified version of Type 304/304L stainless steel with improved machinability when compared to conventional 304 (Alloy Digest SS-418, revised September 1997) and 304L (Alloy Digest SS-513, revised November 1997). The alloys are nonhardenable austenitic chromium-nickel steels and are good general-purpose materials for simple and complex parts. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-875. Producer or source: Carpenter Specialty Alloys.

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