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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047753
EISBN: 978-1-62708-235-8
... Abstract A pressure probe assembly comprised of type 347 stainless steel housing, brazed with AMS 4772D filler metal to the pressure probe, failed due to detachment of a rectangular segment from the housing. The presence of a large brazing metal devoid region in the pressure probe-housing joint...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001351
EISBN: 978-1-62708-215-0
...Results of chemical analysis Table 1 Results of chemical analysis Element Composition, wt% Bellows Chemical requirements for AISI 347 stainless steel Carbon 0.076 0.08 max Chromium 17.8 17–19 Nickel 9.4 9–13 Manganese 1.34 2.00 max Silicon 0.85 1.00 max...
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Published: 01 June 2019
Fig. 1 Type 347 stainless steel pressure-probe housing that failed by fatigue fracture because of voids in a brazed joint. (a) Photograph of opening produced in housing by detachment of a segment at time of fracture. 5 1 4 ×. Large region indicated by arrows is devoid of braze metal More
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Published: 01 June 2019
Fig. 1 Type 347 stainless steel inlet header for fuel-to-air heat exchanger that cracked due to poor welding technique and unfavorable joint design. Dimensions given in inches More
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Published: 01 December 1992
Fig. 3 Optical micrograph of type 347 stainless steel microstructure, showing partial recrystailization. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046252
EISBN: 978-1-62708-229-7
... Abstract A type 321 stainless steel bellows expansion joint on a 17-cm (6 in.) OD inlet line (347 stainless) in a gas-turbine test facility cracked during operation. The line carried high-purity nitrogen gas at 1034 kPa (150 psi) with a flow rate of 5.4 to 8.2 kg/s (12 to 18 lb/s). Cracking...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046476
EISBN: 978-1-62708-234-1
... are developed in Hastelloy N when the alloy is solution heat treated at 1120 deg C (2050 deg F) and is either quenched in water or rapidly cooled in air. An alternative, but less suitable, material for the pot was type 347 (stabilized grade) stainless steel. After welding, the 347 should be stress relieved...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047590
EISBN: 978-1-62708-217-4
... Abstract A weld in a fuel-line tube broke after 159 h of engine testing. The 6.4-mm (0.25-in.) OD x 0.7-mm (0.028-in.) wall thickness tube and the end adapters were all of type 347 stainless steel. The butt joints between tube and end adapters were made by automated gas tungsten arc (orbital...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047579
EISBN: 978-1-62708-234-1
... deposits were of type 347 stainless steel, and the flanges were type 304 stainless steel. Metallographic examination of the failed studs revealed that the HAZs contained regions of martensite and that intergranular cracks, which initiated at the stud surfaces during welding, propagated to complete...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091345
EISBN: 978-1-62708-220-4
... Abstract Beveled weld-joint V-sections were fabricated to connect inlet and outlet sections of tubes in a type 347 stainless steel heat exchanger for a nitric acid concentrator. Each V-section was permanently marked with the tube numbers by a small electric-arc pencil. After one to two years...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048835
EISBN: 978-1-62708-220-4
... by metallurgical examination of a cross section of a longitudinal crack. It was concluded that the damage was caused by a form of hydrogen attack. Installation of a used Cr-Mo steel vessel with a type 347 stainless steel weld overlay was suggested as a corrective action. Decarbuization Desulfurizer reactors...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047745
EISBN: 978-1-62708-235-8
... by the thickness of the oxide layer that the steel surface was not protected from oxidation by the flux during torch heating. It was concluded that the failure was caused by lack of a metallurgical bond between the brazing alloy and the stainless steel. Components made of 347 stainless steel (better brazeability...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089738
EISBN: 978-1-62708-235-8
... Abstract While undergoing vibration testing, a type 347 stainless steel inlet header for a fuel-to-air heat exchanger cracked in the header tube adjacent to the weld bead between the tube and header duct. Investigation (visual inspection and liquid penetrant inspection) supported the conclusion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047566
EISBN: 978-1-62708-235-8
... Abstract Handles welded to the top cover plate of a chemical-plant downcomer broke at the welds when the handles were used to lift the cover. The handles were fabricated of low-carbon steel rod; the cover was of type 502 stainless steel plate. The attachment welds were made with type 347...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001046
EISBN: 978-1-62708-214-3
... … … … … 309 0.08 (a) 2.0 (a) Bal 1.0 (a) … 13.5 23.0 … … … … 316 0.08 (a) 2.0 (a) Bal 1.0 (a) … 12.0 17.0 … … … … 347 0.08 2.0 Bal 1.0 … 11.0 18.0 … … … 10 × C min Nb 600 0.08 0.5 8.0 0.2 0.2 bal 15.5 … … … … 601 0.05 0.5 14.1 0.2 … bal 23.0...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001056
EISBN: 978-1-62708-214-3
... Fig. 1 (a) PHWR moderator circuit branch piping. (b) Schematic of section from which specimens were taken, showing cracks in the welded and ground zone. Fig. 2 Brittle transgranular fracture surface crack produced by inservice failure. Fig. 3 Optical micrograph of type 347...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001774
EISBN: 978-1-62708-241-9
... 347 0.08 max 2.00 max 1.00 max 0.030 max 0.045 max 9.0–13.0 17.0–19.0 10 × C min … Balance Ring gasket 0.02 1.45 0.53 0.002 0.03 9.69 18.0 0.53 … Balance Specification of SS 321 0.08 max 2.00 max 1.00 max 0.030 max 0.045 max 9.0–12.0 17.0–19.0 … 5 × C Balance...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001705
EISBN: 978-1-62708-234-1
... (windings) Heat exchangers Lead Metal baths Wind tunnels 321 UNS S32100 347 UNS S34700 316 UNS S31600 Intergranular corrosion Intergranular fracture 1. Introduction A hypersonic wind tunnel uses freon gas (CF 4 ) as its working medium. Two lead-bath heat exchangers heat the freon to its...
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Published: 01 December 2019
Fig. 11 Microhardness values in different zones of weld joint as taken on reference specimen, i.e. without cracks, are (a) weld zone 345–355 HV, (b) HAZ 357–367 HV, (c) HAZ on opposite side of weld bead 353–367 HV, (d) base metal 346–357 HV and (e) base metal on opposite side of weld bead 347 More
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006828
EISBN: 978-1-62708-329-4
... of the faying surfaces; postbraze cleaning; and service conditions. This article focuses on the advantages, limitations, sources of failure, and anomalies resulting from the brazing process. It discusses the processes involved in the testing and inspection required of the braze joint or assembly. 347...