Simon Ellis Grade Designation

Application
CBN Grades
PCD Grades
Excellent for cast iron, can be used for continuous cut hardened steel
QRH04
 
Tool steels, baienetic iron, excellent general hard turning grade, some prefer QRL11, QRL02, or QRL07 for interrupted cut
QRH08
 
Extremely wear resistant, good for powdered metals, including high cobalt sintered carbide, tool steels, hard facing materials, flame spray materials, cast iron
QRH06
 
Low content CBN, higher ceramic component increases toughness - general hard turning, interrupted cut in tool steels, can be excellent in some iron applications
QRL02
 
Generally interchangeable with QRL02, but made in America
QRL07
 
Higher ceramic content and fine CBN particle size make this grade especially fracture resistant, especially good for severe interrupted cutting
QRL11
 
Excellent all around PCD grade, medium particle size  
QRD01
Larger particle size for highly abrasive materials, also for sintered carbide up to about 18% binder levels  
QRD02
Extremely fine particle size for non abrasive applications requiring a fine cutting edge  
QRD03