Specification 1.General purpose of tungsten molybdenum high speed steel. 2.High toughness combined with good cutting power. 3.Will withstand increased in temperature. Application 1.Cutting tool . 2.Cold forging die. 3.Wear resistance screws. 4.Cold forming tools. Chemical composition NAME C Si Mn P S Cr V M2 0.78-0.88 0.20-0.45 0.15-0.40 â?¤0.030 â?¤0.030 3.75-4.50 1.74-2.20 Similar grade GB AISI/ASTM DIN JIS W6Mo5Cr4V2 M2 1.3343 SKH51