O1 Tool Steel

O1 grade steel is an oil-hardening, non-deforming tool steel. It is considered to be a “non-shrinking” steel and it can be hardened to a Rockwell Range of C 65 through use of relatively low temperatures. Tools and dies made from O1 will have good wearing qualities since the tungsten and higher chromium content gives improved wear resistance over the straight manganese grades. O1 is typically selected for its good combination of strength, hardness and wear resistance. O-1 is available in a standard finish as well as a flat ground stock and drill rod. These are precision ground to a fine surface.

Related SpecificationsAISI ASTM A681 DIN 17350 BS EN ISO 4957