... tool steel D2,1.2379 1.Technique:EAF+LF+VD+(ESR)+Forged+UT test 2.ISO9001 certificated 3.Factory direct sales Cold work tool ... steel D2,1.2379,skd11 Chemical composition %: CSiMnCrMoVCo1.40-1.60≤0.60≤0.6011 ... .0-13.00.70-1.200.50-1.10≤1.00Size and shape:Rounds: φ 60-500mmFlats: ... with high precision and long life. cold work tool steel D2,1.2379,skd11