The steel used to make all tools in the MASTERCUT line is a CPM M4 HSS - a high-tech particle metal. Making our tools from CPM HSS is what truly sets them above the competition. This powder manufacturing process distributes the carbides uniformly throughout the steel. This process prevents the globular, irregular distribution of carbides and alloys as found in conventional HSS.
Advantages of having such uniformity in the steel:
easier to sharpen
performs more consistently
maintains its edge longer (up to 3 times longer)
Note: The carbides in this steel are very fine. This means there are more of them on the cutting edge of the tool at all times compared to lower grade steel.