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Boiler tube steel

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Published: 01 June 2019
Fig. 1 Stationary boiler in which a carbon steel water-wall tube failed by fatigue fracture at the weld joining the tube to a dust bin. (a) Illustration of a portion of the boiler showing location of failure. Dimensions given in inches. (b) Photograph of fractured tube. fatigue crack More
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Published: 01 June 2019
Fig. 1 Carbon steel boiler tube that ruptured due to hydrogen damage. More
Image
Published: 01 January 2002
Fig. 39 Stationary boiler in which a carbon steel water-wall tube failed by fatigue fracture at the weld joining the tube to a dust bin. (a) Illustration of a portion of the boiler showing location of failure. Dimensions given in inches. (b) Photograph of fractured tube. Fatigue crack More
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Published: 30 August 2021
Fig. 18 Metallographic mount of failed steel boiler tube sample exhibiting corrosion fatigue. Source: Ref 53 More
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Published: 30 August 2021
Fig. 8 Microstructure of a carbon steel boiler tube subjected to prolonged overheating below Ac 1 showing (a) decomposition of pearlite into ferrite and spheroidal carbides (original magnification: 400×) and (b) spheroidization of carbide and grain-boundary voids characteristic of tertiary More
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Published: 30 August 2021
Fig. 12 Typical microstructures of carbon steel boiler tube that ruptured as a result of rapid overheating. (a) Elongated grains near rupture resulting from rapid overheating below the recrystallization temperature. (b) Mixed structure near rupture resulting from rapid overheating between Ac 1 More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001791
EISBN: 978-1-62708-241-9
...Comparison between the chemical composition of the boiler tube steel and the one specified by ASTM A 192-02 standard Table 1 Comparison between the chemical composition of the boiler tube steel and the one specified by ASTM A 192-02 standard Elements Chemical composition boiler tube...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0091291
EISBN: 978-1-62708-234-1
... Abstract Carbon steel tubes from a boiler feedwater heater feeding a deaerator were treated to control scale formation, but the treatment instead produced more iron oxide. The additional iron oxide reduced the tubing to a totally corroded condition. Investigation showed that the chelate...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001340
EISBN: 978-1-62708-215-0
... modifications on tube wall temperatures. Boiler tubes, mechanical properties Cracking (fracturing) High temperature Carbon steel Thermal fatigue fracture Background Two identical “D” tube package boilers experienced premature tube failures after short operating times. The tubes were joined...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0048350
EISBN: 978-1-62708-227-3
... Abstract Tubes in a marine boiler on a new ship failed after brief service lives. Circumferential brittle cracking was found to occur in the carbon-molybdenum steel tubes near the points where the tubes were attached to the steam drum. Fatigue striations were revealed by examination of fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048289
EISBN: 978-1-62708-234-1
... Abstract The center portions of two adjacent low-carbon steel boiler tubes (made to ASME SA-192 specifications) ruptured during a start-up period after seven months in service. It was indicated by reports that there had been sufficient water in the boiler two hours before start-up...
Image
Published: 01 June 2019
Fig. 1 Uniform corrosion of steel tubes in boiler feedwater containing oxygen (O 2 ) and a chelating water-treating chemical More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001396
EISBN: 978-1-62708-229-7
... equipment should be prevented from entering the boiler itself. Also, it is good practice to reduce as far as possible the intrusion of weld flash and other impedances to smooth flow within the boiler tubes. Boiler tubes Corrosion products Magnetite Boiler tube steel High-temperature corrosion...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006825
EISBN: 978-1-62708-329-4
... emission. A wide range of materials is used in subcritical boilers, especially for boiler tubes. These include carbon steels; low-alloy steels such as T11, T22, and T24; high-alloy ferritic steels such as T91, T92, and HCM12; and austenitic stainless steels such as TP304, TP304H, TP321H, TP347H...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048356
EISBN: 978-1-62708-229-7
... Abstract Welded to the top of a dust bin for rigid support, a furnace water-wall tube in a new stationary boiler broke at the welded joint shortly after start-up. The tubes measured 64 mm (2.5 in.) OD by 3.2 mm (0.125 in.) wall thickness and were made of carbon steel to ASME SA-226...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001826
EISBN: 978-1-62708-241-9
... water chemistry would prevent the recurrence of such failures. Replacing the present boiler tube material, carbon steel (SA 210A1) with a Cr, Ni, and Mo containing low alloy steel having better mechanical and corrosion resistance properties may be considered as additional option. boiler tubes...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001709
EISBN: 978-1-62708-229-7
... temperature and pressure of the subject boiler tubes are 779 °F (415 °C) and 2935 psi (20.5 MPa), where their working temperature is 693 °F (367 °C). The material of the boiler tubes is steel type SA 210 A-1. After approximately 91317 hr. of operation and during a scheduled maintenance program, failure...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001739
EISBN: 978-1-62708-215-0
... and crack in the tube resulted from hydrogen damage. Examination of the remaining water circuit boiler tubing using nondestructive techniques and elimination of any heavy deposit buildup was recommended. Cracking (fracturing) Carbon steel Hydrogen damage and embrittlement Background The rear...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001323
EISBN: 978-1-62708-215-0
... Abstract Original carbon steel and subsequent replacement austenitic stainless steel superheater tube U-bend failures occurred in a waste heat boiler. The carbon steel tubes had experienced metal wastage in the form of caustic corrosion gouging, while the stainless steel tubes failed by caustic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048309
EISBN: 978-1-62708-229-7
... Abstract A 75 mm OD x 7.4 mm wall thickness carbon steel boiler tube ruptured. A substantial degree of corrosion on the water-side surface leaving a rough area in the immediate vicinity of the rupture was revealed by visual examination. Decarburization and extensive discontinuous intergranular...