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Micrograph of 4340 steel sample nitrided at 510 °C (950 °F) showing the com...
Available to Purchase
in Practical Aspects of Sputtering and Its Role in Industrial Plasma Nitriding
> Surface Engineering
Published: 01 January 1994
Fig. 6 Micrograph of 4340 steel sample nitrided at 510 °C (950 °F) showing the compound zone (white layer). Note the absence of any nitride deposits at the surface. Pressure applied during the nitriding cycle was 2 mbar. Etched with 3% nital
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Continuous-cooling transformation diagrams for AISI (a) 4140 and (b) 4340 s...
Available to PurchasePublished: 01 August 2013
Fig. 8 Continuous-cooling transformation diagrams for AISI (a) 4140 and (b) 4340 steels
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Published: 01 August 2013
Fig. 6 Transformation of retained austenite in 4130 and 4340 steel
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Tempering behavior of a 4340 steel (0.355 C, 0.66 Mn, 0.042 P, 0.017 S, 0.2...
Available to PurchasePublished: 01 August 2013
Fig. 10 Tempering behavior of a 4340 steel (0.355 C, 0.66 Mn, 0.042 P, 0.017 S, 0.28 Si) at various temperatures as a function of time. Adapted from Ref 18
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Published: 01 August 2013
Fig. 15 Tempering curves for (a) 4140 and (b) 4340 steels. Source: Ref 17
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Time-temperature transformation diagrams for 4340 and 5140 steels. The aust...
Available to PurchasePublished: 01 August 2013
Fig. 17 Time-temperature transformation diagrams for 4340 and 5140 steels. The austenitizing temperature for both steels was 845 °C (1550 °F); grain size was 7 to 8 for 4340 and 6 to 7 for 5140.
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Published: 01 August 2013
Fig. 44 Typical Jominy curve for a high-hardenability (4340) steel
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Light micrograph of lath martensite in 4340 steel quenched from 940 °C (172...
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in Microstructures, Processing, and Properties of Steels[1]
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 16 Light micrograph of lath martensite in 4340 steel quenched from 940 °C (1725 °F) and tempered at 350 °C (660 °F). Packets of parallel laths are below resolution of light microscope. Source: Ref 24
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Variation in hardness with tempering temperature for 4340 steel. All specim...
Available to PurchasePublished: 01 January 1990
Fig. 1 Variation in hardness with tempering temperature for 4340 steel. All specimens oil quenched from 845 °C (1550 °F) and tempered 2 h at temperature. AQ, as quenched
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Variation in tensile properties with temperature for 4340 steel. Properties...
Available to PurchasePublished: 01 January 1990
Fig. 2 Variation in tensile properties with temperature for 4340 steel. Properties determined using specimens heat treated to a room-temperature tensile strength of 1380 MPa (200 ksi). Source: Ref 1 , 3
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Low-temperature tensile properties of 4340 steel. Properties determined for...
Available to PurchasePublished: 01 January 1990
Fig. 3 Low-temperature tensile properties of 4340 steel. Properties determined for specimens oil quenched from 860 °C (1575 °F) and double tempered at 230 °C (450 °F). Source: Ref 1 , 4
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Low-temperature toughness of 4340 steel. Determined for material heat treat...
Available to PurchasePublished: 01 January 1990
Fig. 4 Low-temperature toughness of 4340 steel. Determined for material heat treated to room-temperature hardnesses of 28 and 35 HRC
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Effect of hardness on tool life curves. Workpiece: 4340 steel. Tool materia...
Available to PurchasePublished: 01 January 1990
Fig. 15 Effect of hardness on tool life curves. Workpiece: 4340 steel. Tool material: C6 carbide. Source: Ref 25 Sample Hardness, HB Heat treatment ○ A 206 Spheroidized ● B 221 Annealed Δ C 321 Normalized ▲ D 400 Hardened and tempered □ E 500 Hardened
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Constant-lifetime fatigue diagram for AISI-SAE 4340 alloy steel bars, harde...
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in Fatigue Resistance of Steels
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 3 Constant-lifetime fatigue diagram for AISI-SAE 4340 alloy steel bars, hardened and tempered to a tensile strength of 1035 MPa (150 ksi) and tested at various temperatures. Solid lines represent data obtained from unnotched specimens; dashed lines represent data from specimens having
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in Fatigue Resistance of Steels
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 4 Room temperature S-N curves for notched and unnotched AISI 4340 alloy steel with a tensile strength of 860 MPa (125 ksi). Stress ratio, R , equals −1.0. Source: Ref 4
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in Fatigue Resistance of Steels
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 5 Room temperature S-N curves for AISI 4340 alloy steel with various ultimate tensile strengths and with R = −1.0. Source: Ref 4
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in Fatigue Resistance of Steels
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 6 S-N curves at various temperatures for AISI 4340 alloy steel with an ultimate tensile strength of 1090 MPa (158 ksi). Stress ratio, R , equals −1.0. Sources: Ref 4
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in Fatigue Resistance of Steels
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 10 Ductility versus fatigue life for annealed AISI-SAE 4340 steel. Source: Ref 8
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Strength versus fatigue life for annealed AISI-SAE 4340 steel. The equation...
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in Fatigue Resistance of Steels
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 11 Strength versus fatigue life for annealed AISI-SAE 4340 steel. The equation for the actual stress amplitude, σ a , is shown in ksi units. Source: Ref 8
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Total strain versus fatigue life for annealed AISI-SAE 4340 steel. Data are...
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in Fatigue Resistance of Steels
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 12 Total strain versus fatigue life for annealed AISI-SAE 4340 steel. Data are same as in Fig. 10 and 11 . Source: Ref 8
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