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carbonitrided steel

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Published: 01 August 2013
Fig. 13 Hardenability comparison of carburized and carbonitrided steel. Jominy specimens of base steel (0.08 % C, 0.19% Si, 0.40% Mn) were austenitized at 820 °C (1510 °F) for 30 min. Source: Ref 9 , 14 More
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005762
EISBN: 978-1-62708-165-8
... Abstract Carbonitriding is a modified form of carburizing that involves the introduction and diffusion of atomic nitrogen into the surface steel during carburization. This article discusses the composition, depth, and hardenability of a carburized case, and demonstrates how to control...
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Published: 01 August 2013
Fig. 24 Tempering curves for carburized and carbonitrided steels (all oil quenched). Source: Ref 17 8620 carburized steel 8620 carbonitrided steel 1018 carbonitrided steel °C °F HRC °C °F HRC °C °F HRC 150 300 60.5 150 300 62.5 150 300 62.5 205 400 59.0 More
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Published: 01 December 2004
Fig. 26 Carbonitrided and oil-quenched 1117 steel with a surface layer of decarburized ferrite (left) superimposed on a normal case structure of martensite. The core (right) contains patches of ferrite (white). Nital etch. 200× More
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Published: 01 December 2004
Fig. 28 Case microstructure of 1010 steel, carbonitrided at 790 °C (1450 °F) and oil quenched. The high-carbon case (left) is similar to that in Fig. 27 , but the core (right) is predominantly ferrite. Nital etch. 200× More
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Published: 01 December 1998
Fig. 10 Hardness gradients in 1117 steel carbonitrided at 815 °C (1500 °F) for 1 1 2 h and quenched in oil. Required minimum hardness of 630 HK (55 HRC) at 0.025 mm below the surface was met by reducing the percentage and flow rate of ammonia or by adding a diffusion period after More
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Published: 01 December 1998
Fig. 11 End-quench hardenability curve for 1020 steel carbonitrided at 900 °C (1650 °F) compared with curve for the same steel carburized at 925 °C (1700 °F). Hardness was measured along the surface of the as-quenched hardenability specimen. Ammonia and methane contents of the inlet More
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Published: 01 August 2013
Fig. 25 End-quench hardenability curve for 1020 steel carbonitrided at 900 °C (1650 °F) compared with curve for the same steel carburized at 925 °C (1700 °F). Hardness was measured along the surface of the as-quenched hardenability specimen. Ammonia and methane contents of the inlet More
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Published: 01 August 2013
Fig. 7 Layer analysis of carburized and carbonitrided mild steel. Circle: carburized at 0.12% CO 2 for 4 h at 925 °C (1695 °F). X: carbonitrided at 0.12% CO 2 for 4 h at 925 °C (1695 °F) plus 10% NH 3 . Source: Ref 11 More
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Published: 01 August 2013
Fig. 14 End-quench hardenability curve for 1020 steel carbonitrided at three different temperatures compared with curve for the same steel carburized at 925 °C (1700 °F). Hardness was measured along the surface of the as-quenched hardenability specimen. Ammonia and methane contents More
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Published: 01 August 2013
Fig. 15 Hardness gradients in 1117 steel carbonitrided at 815 °C (1500 °F) for 1 1 2 h and quenched in oil. Required minimum hardness of 630 HK (55 HRC) at 0.025 mm (0.001 in.) below the surface was met by reducing the percentage and flow rate of ammonia or by adding a diffusion More
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Published: 01 August 2013
Fig. 18 Retained austenite in 1018 steel carbonitrided at three different temperatures. Bar 28.5 mm (1 1 8 in.) in diameter quenched in 55 °C (130 °F) oil. See also Table 3 . Source: Ref 16 More
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Published: 01 August 2013
Fig. 22 Case hardness and composition of carbonitrided 1018 steel specimens, each line representing a different specimen at process temperatures of (a) 785 °C (1450 °F) and (b) 900 °C (1650 °F). The higher process temperature provides more consistent results and uniform case. 5% ammonia More
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Published: 30 August 2021
Fig. 22 Retained austenite in 1018 steel carbonitrided at three different temperatures. Bar 28.5 mm (1.12 in.) in diameter quenched in 55 °C (130 °F) oil. More
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005951
EISBN: 978-1-62708-168-9
... Abstract Case hardening involves various methods and each method has unique characteristics and different considerations in the selection of steels  This article reviews the various grades of carburizing steels, carbonitriding steels, nitriding steels, and steels for induction, or flame...
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Published: 01 August 2013
Fig. 27 Effect of surface hardness after tempering on the pitting resistance of carburized and carbonitrided steels. Pitting test specimens cut from normalized steel bar were carbonitrided at 900 °C (1650 °F) for 4 h and then at 840 °C (1545 °F) for 4 h in an atmosphere of endothermic gas (RX More
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003762
EISBN: 978-1-62708-177-1
... Abstract This article discusses the metallography and microstructures of carburized, carbonitrided, and nitrided steels, with illustrations. It provides information on the widely used metallographic techniques including sectioning, mounting, grinding and polishing, and etching...
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Published: 01 December 1998
Fig. 18 Effect of porosity on carbonitriding. Compacts of F-0000 powder were pressed and sintered to various densities, then carbonitrided. Hardness traverses reflect both depth of carbonitrided case and density of compacts. Hardness traverse for a carbonitrided specimen of wrought 1018 steel More
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Published: 01 January 1990
Fig. 13 Effect of porosity on carbonitriding. Compacts of F-0000 powder were pressed and sintered to various densities, then carbonitrided. Hardness traverses reflect both depth of carbonitrided case and density of compacts. Hardness traverse for a carbonitrided specimen of wrought 1018 steel More
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Published: 01 December 2004
Fig. 30 Networks of subsurface grain-boundary voids in modified 1012 (0.03% Ni, 0.30% Cr) steel after carbonitriding and quenching. Cold-rolled strip, carbonitrided 1 h at 845 °C (1550 °F), and oil quenched. The formation of grain-boundary voids can occur with carbonitriding temperatures near More