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4340

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Published: 01 December 1999
Fig. 8.15 S-N data for SAE 4340 steel ground with various abrasives. AISI 4340 conditions: quenched and tempered to 50 HRC, surface grinding, cantilever bending, zero mean stress, 75 °C. Source: Ref 14 More
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Published: 01 January 2015
Fig. 6.13 Isothermal transformation diagram for 4340 steel and isothermal heat treatments applied to produce various microstructures for fracture evaluation. Source: Ref 6.16 More
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Published: 01 January 2015
Fig. 6.15 Fracture morphologies of fracture surfaces of 4340 steel CVN specimens heat treated as: (a) oil quenched and tempered at 200 °C (390 °F) and (b) isothermally transformed at 430 °C (810 °F). Source: Ref 6.16 More
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Published: 01 January 2015
Fig. 18.12 Mechanical properties as a function of tempering temperature for 4340 steel tempered for times of 1 h. Ultimate tensile strength (UTS), yield strength (YS), reduction of area (RA), and total elongation (etel) are plotted, and the properties for low-temperature-tempered (LTT More
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Published: 01 January 2015
Fig. 18.26 Engineering stress-strain curves for quenched 4340 steel tempered at various temperatures for 1 h. Courtesy of Young-Kook Lee. Source: Ref 18.31 More
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Published: 01 January 2015
Fig. 18.29 Strain hardening as a function of true strain in quenched 4340 specimens tensile tested after tempering at various temperatures for 1 h. Courtesy of Young-Kook Lee. Source: Ref 18.31 More
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Published: 01 January 2015
Fig. 19.13 Intergranular fracture surface of CVN-tested 4340 steel oil quenched and tempered at 350 °C (660 °F). SEM micrograph. Courtesy of J. Materkowski. Source: Ref 19.41 More
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Published: 01 January 2015
Fig. 19.19 Room temperature CVN energy absorbed for hardened 4340 steel specimens containing either 0.03 or 0.003% P, austenitized at 870 °C (1598 °F), oil quenched, and tempered at temperatures shown for 1 h. Source: Ref 19.49 More
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Published: 01 January 2015
Fig. 19.20 Intergranular fracture of 4340 steel containing 0.03% P and tempered at 400 °C (750 °F). Specimen was broken by impact loading at room temperature. Source: Ref 19.49 More
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Published: 01 January 2015
Fig. 19.21 Flat cleavage facets and microvoids on fracture surface of 4340 steel containing 0.003% P and tempered at 350 °C (662 °F). Specimen was broken by impact loading at room temperature. Source: Ref 19.49 More
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Published: 01 January 2015
Fig. 19.22 Interlath carbides formed during tempering of 4340 steel containing 0.003% P at 350 °C (660 °F). (a) Bright-field image. (b) Dark-field image taken with a cementite diffracted beam. Transmission electron microscope micrographs. Source: Ref 19.49 More
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Published: 01 January 2015
Fig. 19.29 Static fatigue curves for quenched and tempered 4340 notched specimens charged with hydrogen and baked at 150 °C (300 °F) for the times shown. Source: Ref 19.97 More
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Published: 01 March 2002
Fig. 3.21 Microstructure of an AISI/SAE 4340 cast steel gear in the (a) as-cast condition consisting of dendrites of bainite (gray etching constituent) and interdendritic regions of ferrite (light etching constituent) and pearlite (dark etching constituent), (b) carburized condition More
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Published: 01 November 2007
Fig. 10.3 Change in mechanical properties of 4340 steel versus tempering temperature. Source: Ref 10.1 More
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Published: 01 March 2002
Fig. 5.41 Micrographs of a water-quenched AISI/SAE 4340 steel with a fully martensitic microstructure. Micrograph (a) was taken in bright-field illumination, and micrograph (b) was taken with dark-field illumination. Note the clarity of the prior austenite grain boundaries in the dark-field More
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Published: 01 September 2008
Fig. 39 Baking AISI 4340 steel at 300 °F for different times, showing the effect of baking on the incubation of failure More
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Published: 01 September 2008
Fig. 30 Macrograph of AISI 4340 quenched and tempered steel illustrating macroetched pure quench crack. Source: Ref 25 , 36 More
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Published: 01 September 2008
Fig. 11 Changes in the mechanical properties of AISI 4340 steel with tempering temperature. Source: Ref 12 More
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Published: 01 January 2017
Fig. 2.2 Scanning electron fractograph of intergranular SCC in a modified MSI 4340 steel exposed to a saltwater environment. Original magnification: 1800×. Source: Ref 2.17 More
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Published: 01 January 2017
Fig. 3.13 Minimum failure stresses and maximum survival stresses for AISI 4340 steel as affected by degree of biaxiality at various thicknesses. Source: Ref 3.27 More