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Yellow brass, 65% Cu

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Published: 01 June 2019
Fig. 1 Copper alloy C27000 (yellow brass, 65% Cu) air-compressor innercooler tube that failed by dezincification. (a) Unetched longitudinal section through the tube. (b) Micrograph of an unetched specimen showing a thick uniform layer of porous, brittle copper on the inner surface of the tube More
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
... Abstract After about 17 years in service, copper alloy C27000 (yellow brass, 65% Cu) innercooler tubes in an air compressor began leaking cooling water, causing failure and requiring replacement. The tubes were 19 mm in diam and had a wall thickness of 1.3 mm (0.050 in.). The cooling water...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001045
EISBN: 978-1-62708-214-3
... a dezincification-resistant alloy was recommended. Cooling systems Dezincification Hydroelectric power generation Lubrication systems Yellow brass, 65% Cu UNS C27000 Dealloying/selective leaching Background Several brass alloy 270 heat exchanger tubes began to leak after approximately 5.5 years...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001822
EISBN: 978-1-62708-180-1
... if they are lubricated. The bearing is essentially a bronze cylinder lined with babbitt metal. Typically, the bronze alloy composition is close to Cu-16Pb-6Sn-3.5Zn, while the babbitt composition is usually Pb-3.5Sn-8-11.5Sb. A window is cut into the bearing and packed with cotton waste, which trails down to an oil...
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
... as one of the first comprehensive studies into the cause of season cracking, Moore, Beckinsale, and Mallinson concluded in their 1921 paper, “The Season Cracking of Brass and Other Copper Alloys,” that “some agency additional to the presence of initial (residual) stress appears to be necessary...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... be satisfactorily extruded. Corrosion Resistance To meet corrosion requirements, tubing must be resistant to general corrosion, stress-corrosion cracking (SCC), selective leaching (for example, dezincification of brass), and oxygen-cell attack in whatever environments are encountered before service...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... Abiotic aerobic corrosion (O 2 is the electron acceptor, X , in cathodic reaction, Eq 2 ) Yellow/orange/brown/black iron (III) oxides, including lepidocrosite, goethite, magnetite, maghemite, hematite 0.04–0.2 Abiotic anaerobic corrosion (H + as X in cathodic reaction, Eq 2 ) Pasty...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... in corner (arrow). (b) Specimen taken from failure region showing secondary cracks (arrows). Etched with equal parts NH 4 OH and H 2 O 2 . 250× Fig. 10 Effect of grain size on time-to-fracture in ammonia atmosphere. Data are for copper alloy C26800 (yellow brass, 66%) at various values of applied...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006813
EISBN: 978-1-62708-329-4
... with hydrostatic testing and drying and take steps to ensure that the test water is free of corrosives and the tubes are dry before boxing. Some copper alloys, such as the brasses, are very sensitive to stagnant water conditions, especially if the water contains biological material or chemicals that can...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... → 2 Fe ( OH ) 3 The final product is the familiar rust . The classic example of a replacement reaction, the interaction of zinc with copper sulfate solution, illustrates metal deposition: (Eq 18) Zn + Cu 2 + → Zn 2 + + Cu or, viewed as partial reactions...
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
...+ 1.2 Pd-Pd 2+ 0.987 Ag-Ag + 0.799 Hg-Hg 2+ 0.788 Cu-Cu 2+ 0.337 H 2 -H + 0.000 Pb-Pb 2+ −0.126 Sn-Sn 2+ −0.136 Ni-Ni 2+ −0.250 Co-Co 2+ −0.277 Cd-Cd 2+ −0.403 Fe-Fe 2+ −0.440 Cr-Cr 2+ −0.744 Zn-Zn 2+ −0.763 Ti-Ti 3+ −1.210 Ti-Ti 2...
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
... conditions. Ammonium produced by the microbiological reduction of nitrate has been linked to stress-corrosion cracking failures in admiralty brass condenser tubes ( Ref 64 ). Nitrate and nitrite are both relatively strong oxidizing agents that can serve as electron acceptors for the oxidation of iron...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006939
EISBN: 978-1-62708-395-9
... (such as hexamethyldisilazane-modified silica in acrylic coatings) and high-molecular-weight polyester biopolymers as matting agents ( Ref 64 , 65 ). In contrast to matting agents, glossing additives increase the surface reflectivity and make the polymer or coating formulation appear to radiate gloss ( Ref 66 ). Silicone...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
...-stress notch-fatigue failure. Heat Treatment Heat treatment may be required subsequent to a fabricating operation. Deviations from specifications are potential causes of failure. Figure 8 shows a section of tubing made of rimmed steel that had been cold swaged from 65 to 50 mm (2 1 2...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4