Fig. 9 Effect of carbon content (indicated by suffix of 41 xx H steel) on the minimum end-quench hardenability of 41 xx H series. Source: Ref 11 More

Fig. 10 Examples of hardenability bands of H-steels compared to the wider bands for similar steels made to chemical specification only More

Fig. 4 Hardenability bands of carbon H-steels: (a) low hardenability 1038H, (b) 1541H with higher manganese, and (c) boron steel 15B41. All with recommended heat treating as follows: normalize (for forged or rolled specimens only) at 870 °C (1600 °F); austenitize: 845 °C (1550 °F). Source More

Fig. 12 Effect of carbon content on hardenability of chromium 51 xx H-steels. The minimum end-quench hardenability with number adjacent to each curve indicates the carbon content of the steel. Source: Ref 11 More

Fig. 24.17 Alloy carbides in a lath of martensite in H-13 tool steel tempered 100 h at 550 °C (1022 °F). Transmission electron micrograph. Courtesy of J.R.T. Branco, Colorado School of Mines More

Fig. 10.78 Schematic cross section of two bimetallic saw blades. (a) The tool steel (high-speed steel) is fusion welded to a cheaper, higher toughness steel that will make up the body of the saw band. (b) The high-speed steel is forge welded (using pressure and temperature) to the tough steel More

Fig. 10.90 AISI 5120 steel carburized in controlled atmosphere at 920 °C (1670 °F)/1 h cooled to 850 °C (1560 °F) and held for 2 h (diffusion treatment) and quenched in oil at 50–60 °C (120–140 °F), followed by tempering at 180 °C (355 °F) for 2 h. Courtesy of L. Queiroz and L.T. Sandor. More

Fig. 10.95 Steel nitrocarburized at 550 °C (1020 °F) for 5 h. The surface was coated with a chemically deposited layer of hard nickel to preserve it for metallographic examination (indicated as Ni in the figure). The “white layer” is where the formation of high hardness nitrides occur More

Fig. 12.31 AISI 302 stainless steel cold rolled and recrystallization annealed for 1 h at 704 °C (1300 °F). Recrystallized grains with low dislocation density surrounded by a matrix still work hardened, with high dislocation density. The recrystallized grain to the left of the image has More

Fig. 7 Stepwise cracking of a low-strength pipeline steel exposed to H 2 S. 6× More

Fig. 12 The H 2 S-pH tolerance of low-carbon martensitic stainless steel tested by the slow strain-rate technique. HAC, hydrogen-assisted cracking. Source: Ref 25 More

Fig. 7.2 Hardness and notch toughness of 4140 steel tempered 1 h at various temperatures. Source: Ref 2 More

Fig. 9.14 (Part 3) Micrographs of cracks. (h) SAE 8630 steel as quenched; microstructure is martensite where cracking initiated from rolling seam. (i) SAE type 403 stainless steel as quenched and tempered; microstructure is predominantly tempered martensite with cracking promoted by the seam More

Fig. A5.1 Tempering curve for 1045 steel. Tempered 1 h at heat; as quenched, 60 HRC at 120 °C (250 °F). Source: Ref 1 More

Fig. A5.2 Tempering curve for 1144 steel. Tempered 1 h at heat; as quenched, 60 HRC at 120 °C (250 °F). Source: Ref 1 More