Manufacturers of Alloy Steel-Special Grade, Steel Used in Hot Extrusion Dies, Raw Material for Aluminuim Extrusions (Steel Rounds) D2 & H13, Turbine Blades for Steam & Gas Turbine-A22 CRMOV121. Grades: High Speed Steel: AISI M2, M35, M42, T42 Hot Work Tool Steel: AISI H11, H12, H13 Cold Work Tool Steel:AISI D2, D2M Speciality Steel as per Customer Specification. Sizes: Rounds (Annealed & Turned) 70mm to 350 mm Squares: (Annealed)- 80mm to 350mm Side.