High-Performance, Solid-Ceramic End Mills

March 5, 2021
Greenleaf Corp. introduces a line of ceramic end mills machines a wide variety of materials with great resistance to wear and thermal shock.

A line of high-performance solid-ceramic end mills—XSYTIN-360—combine phase-toughened XSYTIN-1 substrate with a novel cutting geometry that offers ten times higher productivity and significant cost savings. The strength of the material allows users to apply chip loads similar to solid-carbide end mills with higher speeds common to ceramic machining. These ceramic end mills provide customers with significant increases in productivity over current solid-carbide or ceramic products.


XSYTIN-1, introduced in 2016, was engineered to machine a wider variety of materials than any other ceramic in the industry. The structure of this phase-toughened ceramic exhibits high wear-resistance and outstanding thermal-shock resistance, which makes the XSYTIN-360 end mills highly predictable, versatile, high-performance products.


XSYTIN-360 end mills have shown the highest material removal rates and resulted in increased productivity on a wide range of materials. These end mills are proven to be extremely effective when machining a variety of different materials, including high-temperature alloys; 3D-printed, sintered high-temperature alloys; hardened steels; ductile cast irons; and compacted graphite iron (CGI.) In hardened steels specifically, the tool life of XSYTIN-360 end mills has proven to be equal to high-performance carbide end mills when run at high-end speeds (11,460 RPM), while also removing over 73 in3 (over 1,200 cm3) of material.


Well suited to machining materials in the aerospace, automotive, die-and-mold, and power generation industries, XSYTIN-360 inch and metric end mills are available now.

  • The flute design minimizes cutting forces, which reduces vibrations and optimizes tool life
  • XSYTIN-1 ceramic material provides ultra-high-strength and wear resistance at extreme feed rates
  • Four-flute design allows for maximum material removal in slotting, pocketing, and profiling applications
  • Overall length of the end mills provides the option for regrinding
  • A very broad application range means numerous machining centers are able to run these end mills
  • High-versatility end mills with twice the feed rate capability and a much broader speed range
  • Increased material removal rates (MRR) of 100% over carbide solutions


  • High-temperature alloys
  • Hardened steels
  • Ductile cast irons
  • Compacted graphite iron (CGI)
  • 3D-printed sintered high-temperature alloys