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SAE 4340 (nickel-chromium-molybdenum alloy steel)

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001792
EISBN: 978-1-62708-241-9
... fracture rotary-bending fatigue steel ratchet marks beach marks star-shaped fracture pattern SEM/EDX analysis fatigue strength SAE 4340 (nickel-chromium-molybdenum alloy steel) UNS G43400 SAE 5046H (low-alloy chromium steel) UNS H50460 Introduction Investigation Methodology Results...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001299
EISBN: 978-1-62708-215-0
... involving 3000 h of service. Fig. 2 Fractograph of the undamage fracture portion, showing the distinct eye zone of a fatigue crack. 1.11× The crankshaft was manufactured from SAE 4340 steel. Similar crankshafts were reported to have completed their predicted service life satisfactorily...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001780
EISBN: 978-1-62708-241-9
... features) on a longitudinal fracture plane of embrittled material, hence the intergranular fracture of the matrix However, one study on 0.30 wt.% carbon, nickel-chromium-molybdenum straight-rolled steel indicated a constant anisotropy ratio of 3.5 between longitudinal and short transverse impact...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
...) Excellent (f) Excellent (f) Good or not recommended (g) Adjustable sustained preload fasteners Alloy steel Cadmium/nickel Good (h) Excellent Excellent Excellent (a) Blind rivets with controlled shank expansion. (b) Metallic structure on backside. (c) Performance in honeycomb...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
... Specification of alloy chemistry (“H” grades) Specification of hardenability (hardness at specific “J” positions on Jominy end quench) Alloy selection Some steel grades prone to macrosegregation of chromium (banding) or gross segregation of manganese (AISI 1340, 1536, 4140H, 4340) Quench...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... Titanium None Excellent (d) Excellent (c) Excellent (c) Good or not recommended (f) Asp fasteners Alloy steel Cadmium/nickel Good (g) Excellent Excellent Excellent Pull-type lockbolts 7075 Aluminum Anodized Not recommended Excellent Excellent Not recommended (a) Blind...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
..., but the degree of embrittlement is enhanced by nickel, manganese, and chromium content. Tempering should be carried out below this range for steels susceptible to this embrittlement or above the range, followed by rapid quenching through the range. Molybdenum additions minimize the susceptibility of steels...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
...-life combinations Fig. 4 A constant-life diagram for alloy steels that provides combined axes for more ready interpretation. Note the presence of safe-life, finite-life lines on this plot. This diagram is for average test data for axial loading of polished specimens of AISI 4340 steel...
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 Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
.... In a series of iron-molybdenum polycrystalline alloys (67 grains across the cross section) no twinning was found during tensile straining until the temperature was decreased to 119 K, but then the number of grains having twins increased rapidly, reaching 60% at 83 K ( Ref 23 ). Additionally, a not-quite...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... widely spaced inclusions within a shear band in a 4340 alloy steel (stress axis is vertical). Source: Ref 41 . (b) Ductile crack growth in high-strength, low-alloy steel (A710). Source: Ref 42 In addition, necking can occur in the ligaments between the particles. With enough plastic flow...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... environmental conditions, typically 5 × 10 6 for steels and ≥10 7 for aluminum alloys, provides a useful and beneficial result of S - N testing. However, other materials do not always exhibit this infinite-life response. Instead, many materials display a continuously decreasing stress-life response, even...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
...–0.30 Group II, case-hardening bearing steels SAE 8620 … 0.18–0.23 0.20–0.35 0.70–0.90 0–0.035 0–0.040 0.40–0.60 0.15–0.25 0.40–0.70 SAE 4320 … 0.17–0.22 0.20–0.35 0.45–0.65 0–0.035 0–0.040 0.40–0.60 0.20–0.30 1.65–2.00 SAE 9310 … 0.08–0.13 0.20–0.35 0.45–0.65 0...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... on fracture path Effects on fracture mechanics properties Phase morphology in α-β titanium alloys Change from α and β grains to α in β Crack branching and irregularity greatly increased Higher K Ic and K Issc Increased resistance to fatigue crack growth Large particles in steels...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... fracture in 7079-T651 aluminum that failed under stress-corrosion cracking conditions in a 3.5% chloride solution. Transmission electron microscopy replica Fig. 13 Mud cracks on the fracture surface of a quenched and tempered 4340 steel exposed to a marine environment. Transmission electron...