الوصف

Oil & air quenched hot work steel, superb hardenability.
Good toughness, excellent thermal resistance and polishability. 
Suitable for surface treatment（e.g. chrome)  
  Forging dies of all types : hammer forging dies up to largest dimensions, tools for tube and rod extrusion such as rams, bolsters, mandrels, plungers, sleeves, die holders, backing plates, chipping beds, press dies for mould parts, deep engraving dies, containers for die casting presses, hot forming dies, bending and heavy embossing tools, hot mill rolls, hammers and pile drivers, hot punching tools, very hard cold work dies and punches, hot shear blades, blocks for dies, forging saddles, pressing spindles, shrink rings, armored trim dies, hydro forming tools, plastic moulds, hot gripper and heading dies.