9% Tungsten hot work Steel: H-21 5% Chromium hot work Steel: H-11, H-13
Sizes & Ranges of above HDS mentioned grades: ROUND DIA
Small Dia : 26 mm to 75 mm
Medium Dia : 80 mm to 110 mm
Large Dia: 112mm to 350 mm
INTRODUCTION OF HDS 9% Tungsten hot work Steel: – Pressure casting moulds, cores, dies for non-ferrous products, tools for screws products hot extrusion dies, lower dies for valve cone products for pressing dies, hot shear blades and trimmer dies for upsetting tools used in bolt, rivet nut and pin manufacturing; for heading punches, swaging dies.it is suitable for oil and air hardening and it offers high hardness retention. It provides good resistance to hot wear and heat checking.5% Chromium hot work Steel: -Extrusion dies; Gripper dies, Rams Drop forging dies, Pressure casting moulds for light alloys. Metal truck pressure tools, High stressed internal boxes, little tube pressing mandrels for water cooling, Die-Casting tools, Punches. It has very good high-temperature characteristics and excellent toughness combined with resistivity to heat checking. Characteristic properties HDS GRADES

• High hardenability
• Excellent wear resistance
• Hot toughness
• Good thermal shock resistance
• Improved machinability