Features 1.Similar to m2 high speed steel. 2.Added cobalt to increase hot hardness. 3.Offers excellent cutting performance. Chemical composition C Si Mn P S Cr Mo V W Co 0.88-0.95 â?¤0.40 â?¤0.40 â?¤0.030 â?¤0.030 3.80-4.50 4.75-5.20 1.75-2.00 6.00-7.00 4.60-5.00 Size Round bar Diameter(mm) Length(mm) Max 800 Max 9000 Plate Thickness(mm) Width(mm) Length(mm) Max 800 Max 1500 Max 6000 The above is our regular size, we also can provide customized sizes! -