SKH-9 --- Japan Fujio high-speed steel 
 High-performance high-speed tool steel with good toughness 

 SKH-9 specialty: www.ylmjg.com/ 076 981 760 222 
 W-Mo (6-5-2 type) high-speed tool steel is the most universal, in particular, SKH-9 (JIS SKH51, it) is the amount of the world, instead of the W-type high speed tool steel SKH2. 

 Carbides are fine, neat, good distribution, and even more balanced, so the wear resistance and toughness. Particularly because only the increase or decrease on the carbon content, and therefore does not damage the high-temperature properties, continuous and substantially change the steel nature. Need toughness of low carbon steel for hardness, wear resistance is required for selection of high carbon steel. 

 Rich hot work, cold work plasticity, has been cut and grind is also good. 

 SKH-9 purposes: 
 Cutting with: drills, taps, reamers, circular saws, gear cutters, broaches, planer, etc.. 
 Mold: a variety of hot work, cold work die and punch, the cutting knife, cutting knife, all kinds of the gadolinium roller tools. 

 SKH-9 chemical composition: 
 Fujikoshi steel No. JIS 
 Corresponding steel chemical composition (%) 
 C, Si Mn Cr Mo the WV 
 SKH-9 SKH51, it 0.85 0.3 0.3 4 5 6 2 


 Heat Treatment of SKH-9: 
 Forging temperature (° C) annealing quenching and tempering hardness 
 I hot austenitizing coolant temperature tempering 
 1120 ~ 900 
 Xu cold 
 820 to 880 
 Xu cold furnace of 820 to 880 
 Xu cold 1210-1230 AOH 540-590 2-3 64-56 
 ]? Fujikoshi HM35 (JIS SKH55)? Fujikoshi HM42 (JIS SKH59)? NACHI performance control high-speed steel 
 ? Japan Datong MH51 (JIS SKH51)? Japan Hitachi YXM1 (SKH-9)? Domestic of M2 (of W6Mo5Cr4V2) 
 High-speed tool steel, high-performance and future development trends? High-speed steel of the present situation and development direction? Characteristics and applications of powder tool steel CPM10V