Search Results for high-speed steel

Fig. 3-4 Macroetch quality of high-carbon sulfurized M2-type high-speed steel produced conventionally and by electroflux remelting. (a) From static cast 350 mm (14 in.) square ingot. Disks hardened and tempered. (b) and (c) From electroflux remelted 400 mm (16 in.) diam ingot. Polished More

Fig. 26-5 Tool life of high-speed steel tools for 0.30% cast carbon steel More

Fig. 26-6 Tool life of high-speed steel tools for cast 0.30% carbon steel More

Figure 6-15 Example of grain size measurement of M2 high speed steel using the Snyder-Graff intercept method (reduced 25 percent in reproduction). The above micrograph at 1000X (nital) has two 5 in. long lines drawn diagonally to fit the picture size (ten measurements on horizontal lines More

Fig. 2 Effect of cobalt content on the hot hardness of T1 high-speed steel. Initial hardness of 66 HRC at different testing temperatures. Source: Ref 3 More

Fig. 5 Graphical comparison of high-speed steel properties More

Fig. 14-1 Phase diagram for T1 -type high-speed steel based on 18W-4Cr section through the quaternary Fe-W-Cr-C system. Source: Ref 1 , based on work from Ref 2 to 5 More

Fig. 14-2 Phase diagram for M2-type high-speed steel based on the 6W-5Mo-4Cr-2V section through the Fe-W-Mo-Cr-V-C system. C, carbide. Source: Ref 1 , based on work from Ref 6 More

Fig. 14-4 Feathery, herringbone, and MC eutectics in M2 high-speed steel. (a) Light micrograph, KMn0 4 etch, (b) Microradiograph of same area. Source: Ref 7 More

Fig. 14-5 Microstructure of high-speed steel showing alteration in carbide aggregates caused by forging. (a) Longitudinal microstructure after moderate reduction. (b) Longitudinal microstructure after modre severe reduction More

Fig. 14-7 Microstructure of annealed M2 high-speed steel. 2000x. (a) Etched electrolytically in 1 % chromic acid, 3 V. 1.7% MC. (b) As (a) and etched in 4% NaOH saturated with KMnO 4 . 1.7% MC plus 13.0% M 6 C. (c) As (b) and etched in 1 % nital. 1.7% MC plus 13.0% M 6 C plus 8.5% M 23 C 6 More

Fig. 14-9 Microstructure of quenched T1 high-speed steel. (a) Quenched in oil from 870 °C (1600 °F); underheated. Nital etch, 500x. (b) Quenched in oil from 1260 °C (2300 °F); typical hardened microstructure showing prior-austenite grain size and carbides. Nital etch, 500x. (c) Quenched from More

Fig. 14-10 Effect of austenitizing temperature on grain size of T6 high-speed steel. Light micrographs, 300x. (a) 1260 °C (2300 °F); grain size, 18. (b) 1290 °C (2350 °F); grain size, 14. (c) 1300 °C (2375 °F); grain size, 10; (d) 1315 °C (2400 °F); grain size, 6 More

Fig. 14-11 Mixed grain size in high-speed steel, heated to 1295 °C (2360 °F), caused by marked segregation of carbide particles More

Fig. 14-14 IT diagram for T1 high-speed steel. Austenitizing temperature, 1290 °C (2350 °F). Source: Ref 19 More

Fig. 14-15 Bainite formation in T1 high-speed steel as a function of time at 315 °C (600 °F). Note that the reaction does not proceed to completion. Source: Ref 19 More

Fig. 14-20 Oil-quenched hardness (HRC) of type T1 high-speed steel as a function of austenitizing time and temperature. Source: Ref 23 More

Fig. 14-21 Dilatation curve for the continuous cooling of T1 high-speed steel, showing expansion caused by austenite-to-martensite transformation, which continues through room temperature. Source: Ref 24 More

Fig. 14-27 Master tempering curves for M2 high-speed steel hardened from two different austenitizing temperatures More

Fig. 14-29 Isohardness lines for tempering M2 high-speed steel quenched from 1190 °C (2175 °F) More