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Admiralty metal

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046469
EISBN: 978-1-62708-229-7
... susceptible to dezincification. Recommendations included replacing the material with copper alloy C68700 (arsenical aluminum brass), which contains 0.02 to 0.06% As and is highly resistant to dezincification. Copper alloy C44300 (inhibited admiralty metal) could be an alternative selection for this...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001044
EISBN: 978-1-62708-214-3
.... Stress-corrosion cracking was shown to have caused the failure. The most probable corrosive was ammonia or an ammonium compound in the presence of oxygen and water. All of the tubes were replaced. Admiralty metal, corrosion Brass - C44300 Condenser tubes, corrosion Electric power generation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091807
EISBN: 978-1-62708-229-7
... in the operating system and on test coupons exposed to the operating environment. Nitrate-reducing bacteria from the lakewater used in cooling were found to produce high levels of ammonia (5.8 mg/L) when established in biofilms. Ammonia levels at the metal surface were 300 times higher than...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001310
EISBN: 978-1-62708-215-0
.... Figure 1 shows a schematic of the specimen locations in the failed condenser tube. Samples outside the failed regions were used for chemical analysis of the tube material. Fig. 1 Schematic of relative locations of samples taken for examination. Metal chips taken from an area some...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001521
EISBN: 978-1-62708-229-7
... diagram of a turbogenerator oil cooler with Admiralty brass tubes. The tubes have outside diameters of 16 mm (0.625 in.) and wall thicknesses of 1 mm (0.042 in.). They are made to ASTM B111 Alloy C44300, which is commonly referred to as Admiralty Metal (an α brass) 1 . Nominal composition (in wt...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001313
EISBN: 978-1-62708-215-0
... used. Admiralty metal Ammonia, environment Cooling systems Heat exchanger tubes, corrosion Hydroelectric power generation C44300 UNS C44300 Pitting corrosion Stress-corrosion cracking A brass finned tube in a generator air cooler unit failed. The as-received...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... Abstract Corrosion is the electrochemical reaction of a material and its environment. This article addresses those forms of corrosion that contribute directly to the failure of metal parts or that render them susceptible to failure by some other mechanism. Various forms of corrosion covered are...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... environmentally induced cracking, this article deals only with SCC of metallic components. It begins by presenting terminology and background of SCC. Then, the general characteristics of SCC and the development of conditions for SCC as well as the stages of SCC are covered. The article provides a brief overview...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048714
EISBN: 978-1-62708-229-7
... admiralty metal). Samples of the tubes were sent to the laboratory to determine the mechanism of failure. Visual examination of the damaged area revealed an uneven ridgelike thinning and perforation of the tube wall ( Fig. 1a ) on the leeward side of the tube. An enlarged view of the ridges on...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006788
EISBN: 978-1-62708-295-2
... MIC, identifying and applying preventive and mitigative measures, and monitoring the effectiveness of mitigation” ( Ref 3 ). Microorganisms can directly or indirectly affect the integrity of many materials. Most metals, including iron, copper, nickel, aluminum, and their...