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Class 40

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0047220
EISBN: 978-1-62708-220-4
... Abstract Two oil-pump gears broke after four months of service in a gas compressor that operated at 1000 rpm and provided a discharge pressure of 7240 kPa (1050 psi). The compressor ran intermittently with sudden starts and stops. The large gear was sand cast from class 40 gray iron with a...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0048250
EISBN: 978-1-62708-236-5
... shaft. The worm and the worm gear were made of leaded cold-drawn 1113 steel and class 35-40 gray iron (nitrided in an aerated salt bath) respectively. The gearbox was found to contain fragments of the worm teeth and shavings that resembled steel wool. More than half of the worm teeth were revealed to be...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001591
EISBN: 978-1-62708-227-3
... Abstract On 14 April 1912, at 11:40 p.m., Greenland Time, the Royal Mail Ship Titanic on its maiden voyage was proceeding westward at 21.5 knots (40 km/h) when the lookouts on the foremast sighted a massive iceberg estimated to have weighed between 150,000 to 300,000 tons at a distance of 500 m...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047297
EISBN: 978-1-62708-235-8
... composition closer to class 40 than to class 30 gray iron. Although class 40 gray iron is normally stronger than class 30, the low combined carbon values (<0.8%) indicate a probable high-ferrite matrix. Because ferrite tends to lower the strength of the material, heat treatment may have been attempted to...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... describes the corrosion resistance characteristics of specific classes of refractories and structural ceramics. The article also examines the prevention strategies that minimize corrosion failures of both classes of materials. aerospace industry automotive industry chemical corrosion chemical...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001128
EISBN: 978-1-62708-214-3
... Abstract Creep crack growth and fracture toughness tests were performed using test material machined from a seam welded ASTM A-155-66 class 1 (2.25Cr-1Mo) steel steam pipe that had been in service for 15 years. The fracture morphology was examined using SEM fractography. Dimpled fracture was...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001735
EISBN: 978-1-62708-220-4
... Abstract A sample tube was removed from a reformer furnace for life assessment after 69,000 h of service. Sections were cut from the tube, which was a spindle cast A297 Grade HK 40 (25 Cr, 20 Ni, 0.4 C) austenitic steel of 122.5 mm OD and 10.5 mm nominal wall thickness. They were examined...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001434
EISBN: 978-1-62708-236-5
... Equivalent tensile strength 40 t.p.s.i. It was subsequently ascertained that the top end bearings of the connecting rods in this engine were originally fed with oil from the bottom ends by means of external pipes carried along the side flutes in the rods. About five years prior to the mishap this...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001835
EISBN: 978-1-62708-241-9
... mm × 130 mm, and it is assembled to the blade by means of M24 10.9 class bolts equally distributed along its inner ring. The total number of the bolts is 48. The bearing’s inner ring bolts connect the blade, the bearing’s inner ring, the torque plate, and the stiffening plate. Many researchers...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... extensive areas of the casting Corner scab A 226 (a) Projections with rough surfaces in an area formed by a core Broken or crushed core Cavities B 100: Cavities with generally rounded, smooth walls perceptible to the naked eye (blowholes, pinholes) B 110: Class B 100...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001828
EISBN: 978-1-62708-241-9
... component (43–50 HRC) would be sensitive to pure water SCC. The journals on all four pumps were replaced with new journals with the following specifications and controlled properties: The journal material was revised from A-296-CA-40, a cast material, to an ASTM A182-82 Grade F6a (Nuclear Class...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001137
EISBN: 978-1-62708-228-0
... another class of CSPVs. One of these vessels, used as carbon dioxide adsorber and operating at −130°C, had failed catastrophically through a crack in its domed head some two years previously. A failure analysis report ( 4 ) attributed the failure largely to stress corrosion cracking (SCC), but no fracture...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001083
EISBN: 978-1-62708-214-3
... requirements for ASTM Specification B62, class C83600. The impeller material did not meet the chemical requirements. The phosphorus content of the material was too high: 0.22%, compared with the maximum level of 0.05% specified. Table 2 Results of chemical analysis Element Composition, wt...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001143
EISBN: 978-1-62708-229-7
... similar in origin to a previous failure occurring in a specific turbine and blade row were termed repeated failures. Table 2 summarizes the findings of the survey and reveals that in 40 percent of the cases where new blades of the same design were installed in a LP turbine, a repeat failure occurred...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001593
EISBN: 978-1-62708-234-1
... other plastics, however, it is somewhat notch sensitive. As a class of materials, polysulfone is known for good electrical insulation properties, excellent thermal stability, and exceptional hydrolytic stability. Because of its unique combination of thermal and hydrolytic properties, polysulfone is...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001420
EISBN: 978-1-62708-220-4
... behaviour. As can be seen from the photograph Fig. 1 , the machine was completely wrecked, while damage to surrounding property was extensive. Fig. 1 The basket comprised a steel shell, 40 in. inside diameter by 24 in. high, with a wall thickness of 7 8 in.; recessed end plate were...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001765
EISBN: 978-1-62708-241-9
... grade C UNS K02401 ASTM A537 class 2 Coating and cathodic protection (CP) are both engineering techniques with the primary purpose of mitigating and preventing corrosion. To obtain maximum corrosion resistance from the combination of a coating and CP, a number of...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001814
EISBN: 978-1-62708-241-9
... the high-temperature degradation were also analyzed and are discussed. pressure vessel fracture overtemperature steel bulging rupture x-ray diffraction analysis fracture toughness SA387 grade 11 class 2 (1.25Cr-0.5Mo chromium-molybdenum alloy steel) ASTM B424 (Ni-Fe-Cr-Mo-Cu alloy...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
... obtained except within narrow classes of materials with similar structure ( Ref 5 ). Therefore, equipment builders have relied on empirical comparisons of erosion resistance, such as that compiled by Heymann (Fig. 13 in Ref 2 ) for all types of liquid impact. Fig. 12 Dependence of maximum erosion...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001275
EISBN: 978-1-62708-215-0
... class A and had a standard diameter ratio (SDR) of 11.5. For this SDR, the specified outer diameter is 11.43 ± 0.0229 cm (4.5 ± 0.009 in.) and the wall thickness is 1.04 ± 0.124 cm (0.409 ± 0.049 in.). There have been no general problems with the performance of squeeze-clamped polyethylene pipe...