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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: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001790
EISBN: 978-1-62708-241-9
... nonmetallic inclusions steel abnormal wear pattern metallographic analysis microstructure 4340 (nickel-chromium-molybdenum alloy steel) UNS G43400 Introduction Background Information Visual and Light Microscopic Examination Metallographic Evaluation Scanning Electron Microscopy...
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
... Chromium 0.82 0.705–0.90 Molybdenum 0.25 0.205–0.30 Hardness Microhardness measurements using a 30 kg load produced an average value of 383 HV. The minimum specified hardness requirement was 360 HV. The catastrophic fracture was attributed to the presence of a subsurface defect...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... ksi). The microstructure of the steel was fine, dispersed, tempered martensite with elongated stringers of manganese sulfide. Also present were spheroidized white particles that were identified as high-alloy complex carbides (M 6 C) corresponding to the double carbides Fe 4 Mo 2 C and Fe 4 Cr 2 C...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001504
EISBN: 978-1-62708-217-4
... tool steel tube and heat treated to a UTS in the 1650–1790 MPa (240–260 ksi) range except for the ends which were in the 1240–1380 MPa (180–200 ksi) range. The outside surface was chromium plated to a thickness of 0.05 to 0.075 mm (0.002 to 0.003 in) and the lock pin hole flash chromium plated...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003540
EISBN: 978-1-62708-180-1
..., and chromium diffusion is faster in nickel-base alloys than in austenitic stainless steels; therefore, the nose in the carbide precipitation or sensitization curves is shifted to shorter times and higher temperatures. Significant heat-to-heat variations in the chromium depletion of alloy 600 have been observed...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
... in austenitic stainless steel. Carbon solubility is considerably lower, and chromium diffusion is faster in nickel-base alloys than in austenitic stainless steels; therefore, the nose in the carbide precipitation...
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 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...
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
... industries: Carbon, low-alloy, stainless steel, and nickel alloy process piping and vessels Manufacturing: Steel components subjected to caustic environments in pulp and paper equipment, sensitized stainless steel piping in food processing or dairy industries Power generation: Alloy steel used...
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
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
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
... 0.607 1.00 Nickel 0.10 0.75 10.00 10.16 11.06 10–14 Chromium 0.068 2.00 16.00 19.43 19.46 16–18 (c) Molybdenum 0.023 0.65 2.00 2.86 2.88 2–3 Iron bal bal bal bal bal bal (a) Maximum content unless range is given. (b) Carbon content is 0.03% max for type...
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...
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.a0003552
EISBN: 978-1-62708-180-1
... on temperature, hydrogen partial pressure, stress level, exposure time, and steel composition. Additions of chromium and molybdenum to the steel composition improve the resistance to hydrogen attack. On the basis of industrial experience, the American Petroleum Institute prepared a materials selection guide...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... Embrittlement of Metals: A Primer for the Failure Analyst , J. Fail. Anal. Prevent. , Vol 8 , 2008 , p 289 – 307 10.1007/s11668-008-9133-x Austenitic Stainless Steels Ferritic Stainless Steels Martensitic and Precipitation-Hardening Stainless Steels Annealed Nickel Alloys Nickel-Base...
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...