The below graph shows a single combined graph of the three means of processing with MetaLLife (T-41 or T-41H) and ThermaLLifeÒ (TL06 or TL08).  From the graph it can be seen that the black curve has both the highest surface compression and maximum compressive values with no topography to the tool steel.  The ThermaLLifeÒ + T-41H processing also can be done without any danger of spalling the epsilon compound layer, however,  customers that prefer a topography will perform the  MetaLLife first .