Typical Analysis; Carbon 1.50%, Manganese 0.25%, Silicon 0.20%, Chromium 4.75%, Vanadium 5.00%,Tungsten 12.50%, Cobalt 5.00%. T-15 Is used in a variety of applications, such as; Slitting Saws, Slotting Saws, Drills, Endmills, Hobs, Milling Cutters, Slitting Knives, Stamping, Blanking Punches, Blanking Dies, Forming Dies, Fine Blanking Tools, Shearing Knives.