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copper wire

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0006897
EISBN: 978-1-62708-222-8
... Abstract The small cable (drop wire) providing service for individual subscribers from the aerial plant is held in place by a clamp made of a tin-coated brass body (attached to the cable) and a copper tail wire loop (attached to a galvanized steel hook or to a porcelain insulator). The tail...
Image
Published: 01 January 2002
Fig. 22 Two views of a notched specimen that was electroplated with copper, wrapped with copper wire, and tested for 3 h at 1100 °C (2010 °F) without application of a load. No grain-boundary penetration of copper or intergranular cracking is evident, but there is evidence of minor bulk More
Image
Published: 01 June 2019
Fig. 1 Broken copper tail wires of an aerial clamp More
Image
Published: 01 June 2019
Fig. 4 Photomicrographs of transgranular cracks on copper tail wires. The cracks are initiated at the bottoms of the pits. 60× More
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001385
EISBN: 978-1-62708-215-0
...: ANSI/UL 486A Wire Connectors and Soldering Lugs for use with Copper Conductors ANSI/UL 486B Wire Connectors for Use with Aluminum Conductors ANSI/UL 486E Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors Standards 486B and 486E require that terminals intended...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001607
EISBN: 978-1-62708-231-0
... that the fracture region in each strand was adjacent to the fracture region in the nearby strand. The wires were then bound together with a copper wire and cleaned ultrasonically in acetone before being examined under a JEOL 840 scanning electron microscope (JEOL, Peabody, MA) at an accelerating voltage of 20 kV...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001624
EISBN: 978-1-62708-218-1
..., which led to melting of the wire. Chemical analysis Corrosion products Discoloration Electric Sensors Wire Copper (Other, miscellaneous, or unspecified) failure An electronic sensor coil failed continuity testing, indicating that a break was present in the polymercoated wire...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001443
EISBN: 978-1-62708-235-8
... Abstract Following the fusing of one of the copper leads in the choke circuit of an electric welder, a piece of the affected lead was obtained for examination. The sample had large internal cavities and surface bulges. It is remarkable that a wire containing defects of the magnitude present...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0049838
EISBN: 978-1-62708-222-8
.... The composition is found to vary along the radius with the values determined by microanalysis given in Table 2 . The principal change appears to be a nearly direct replacement of zinc by aluminum, with the copper content remaining similar. X-ray microanalysis of reaction zone at the aluminum wire/brass plate...
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
... wire. In some tests, wrapping was done with 70Cu-30Zn. Specimens that fractured in the presence of brass failed suddenly and had sharp fracture faces; that is, no neckdown resulted. Copper penetration was found in these samples. The temperature above which failures occurred decreased as the applied...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048134
EISBN: 978-1-62708-235-8
... Abstract A copper alloy C51000 (phosphor bronze, 5%A) failed prematurely during life testing of several such springs. The wire used for the springs was 0.46 mm (0.018 in.) in diam and was in the spring-temper condition. The springs were revealed to be subjected to cyclic loading...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003520
EISBN: 978-1-62708-180-1
... of the guy wires had failed by fatigue, and fractographic analysis indicated that there were at least 250,000 stress cycles during the growth of the fatigue crack from the origin to final rupture. Figure 1 shows examples of fatigue striations seen on the pin surface. Figure 2 is a plot of the striations...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047392
EISBN: 978-1-62708-221-1
... metal arc welding; neither preheating nor postheating was specified. The filler metal was E70S-6 continuous consumable wire with a copper coating to protect it from atmospheric oxidation while on the reel. Analysis of the two castings revealed that the carbon content was higher than specified, ranging...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001259
EISBN: 978-1-62708-233-4
... Abstract A bolt manufacturer observed that products made from certain shipments of steel 41 Cr4 wire were prone to the formation of quench cracks in their rolled threads. The affected wire was tested and found to be highly sensitive to overheating because of the metallurgical method by which...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001124
EISBN: 978-1-62708-214-3
... of the base wire Element Required content (ASTM B398), % Measured content, % Copper 0.10 max 0.036 Iron 0.50 max 0.26 Manganese 0.03 max 0.003 Magnesium 0.6–0.9 0.61 Zinc 0.10 max 0.01 Chromium 0.03 max 0.001 Silicon 0.5–0.9 0.5 Boron 0.06 max 0.01 Aluminum...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001104
EISBN: 978-1-62708-214-3
... and an unused section of new wire showed that the fracture resulted from sulfur attack and overheating during service. It was recommended that the sinter belt material be changed to Nicrofer 3220-H (alloy 800H). Belt conveyors Carburization (corrosion) Furnace conveyors Sintering furnaces...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001778
EISBN: 978-1-62708-241-9
... sectioned from the fractured end of each failed wire rod for optical microscopy and electron probe microanalysis. These samples were individually mounted in electrically conductive copper-containing resin and polished by conventional metallographic techniques. The polished samples were etched in 2% nital...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001845
EISBN: 978-1-62708-241-9
... were detected in two steady clamps made of CuNi 2 Si (per DIN 2.0855) alloy approximately 6 months after commissioning. A steady clamp is a kind of fitting for the overhead contact system in electrified railways, being applied to fix the copper wires. Typical physical properties of CuNi 2 Si...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
.... Process of Predicting Galvanic Corrosion from Polarization Behavior The process of predicting galvanic corrosion from polarization behavior can be illustrated by the example of a steel-copper system. Steel has the more negative corrosion potential and will therefore suffer increased corrosion upon...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001813
EISBN: 978-1-62708-180-1
... and alloys, including stainless steels, heat-resisting alloys, copper alloys and titanium alloys. The broad range of compositions, sizes, and types of springs is equaled by the required range of quality and characteristics. Quality can range from that required for low-cost ballpoint pens to the extremely...