1,Size of Steel grade 1.2379 mechanical properties Round bar Diameter(mm) Length (mm) Max:800 Max: 9000 Plate Thickness(mm) Width (mm) Length (mm) Max:800 Max:1000 Max:6000 The specification can be customized. 2,Chemical Compositons C Si Mn P S Cr Mo 1.40-1.60 â?¤0.60 â?¤0.60 â?¤0.030 â?¤0.035 â?¤ 0.03 0.70-1.20 3,Features of Aisi D2 Steel 1, High carbon high chromium tool steel 2, High wear resistance and toughness 3, Offers a measure of corrosion resistance when polished 4, Alternative to oil hardening tool steel 4,Typical Applications 1, Wide variety of tool making applications 2, Blanking dies and punches 3, Deep drawing dies, cupping dies, forming dies, sheet metal forming rolls 4, Master hobs for cold hobbing moulds and cut moulds for plastics