Performance Characteristics: 1. The steel belongs to hot-work die steel 3Cr2W8V/H21/SKD5/X30WCrV93 2. The steel is of high quenching degree, abrasive resistance and fine high temperature oxidation resistance properties. 3. The steel is the most suitable material to make all kinds of high precision and long life cold-working mould, cutting tool and measuring tool. Applications: Used for manufacturing hot extrusion die and mandrel by aluminum alloy sections. swage hammers, forging presses, forging machine, high modulus die under high temperature and shock loading. Chemical Composition (%): Standard Grade C Si Mn Cr Ni Mo P S GB 5CrNiMo 0.50-0.60 �0.40 0.50-0.80 0.50-0.80 1.40-1.80 0.15-0.30 �0.03 �0.03 AISI L6 0.65-0.75 0.20-0.40 0.55-0.65 0.65-0.85 1.25-1.75 0.25 ----- ----- JIS SKT4 0.50-0.60 �0.35 0.60-1.00 0.70-1.00 1.30-2.00 0.20-0.50 �0.03 �0.03 DIN Heat Treatment Standard: Quenching, 830~ 860 centigrade cold oil Hardness of annealed: HBS�240   The Process: EAF+LF+VD+ESR+Forged or hot rolled+Heat Treatment(optional) Inspecting: ultrasonic test, according to SEP1921 D/d or as your requirements  Delivery status: Annealed