Available sizes:

Round: Dia. 20 – 600mm

Flat: Thickness 20 – 200mm, width 60 – 610mm

Delivery condition: EAF or ESR, Hot rolled or forged, Peeled or black surface, annealed or QT.

 

Properties :

Cr-Ni-Mo alloyed hot work tool steel with high temperature impact toughness and thermal fatigue strength, resistant to repeated shocks, high resistant to tempering, medium wear resistance, oil and air hardening with good through hardenability, low P and S content, polishable. Suitable for pitting and chrome plating. This grade is produced on request annealed or quenched and tempered condition.

 

Applications :

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, armoured trim dies, hydro forming tools, plastic moulds, hot gripper and heading dies.

 

Heat Treatment :

Annealing : 650 - 700 °C

Hardness after annealing : Max. 248 HB

Stress relieving : Approx. 650 °C

Hot forming : 1100 - 850 °C

Hardening : 830 - 870 °C or 870 - 900 °C

Quenching media : 830 - 870 °C Oil, 870 - 900 °C Air

Hardness after quenching : 52 - 58 HRC,              Oil 44 - 50 HRC, Air

Hardness after tempering :