TITANTIUM COATINGS TiN - TiCN - TiAlN - AlTiN
FOR IMPROVED PERFORMANCE OF WET OR DRY MACHINING
TiN
Titanium Nitride coating with its familiar gold color remains the most popular general purpose coating. TiN has the highest adhesion and ductility characteristics of any of the coatings we offer and remains our best seller. The excellent wear resistance, thermal stability, and low coefficient of friction reduces built up edge and thus improves thermal transfer of heat away from the tool.

  • Hardness (Vickers):
 2300 (81 Rc)
  • Oxidation Temperature:
 550°C (1050°F)
  • Friction Coefficient:
 .65
  • Thickness:
 2-4 microns
  • Surface Roughness (Ramm):
 .20

Applications: A good general purpose coating for drilling, reaming, counterboring and milling of chip classes 20 through 140 materials. Drilling and reaming should be restricted to shallow holes (< 2.5x tool diameter) and to applications where coolant reaction must be minimized

TiCN
Titanium Carbonitride, blue grey in color, has a hard, smooth finish which offers improved wear and built up edge resistance. TiCN has good adhesion, toughness, and resistance to chipping and performs well on drills and reamers where moderate temperatures are generated at the cuffing edge.

  • Hardness (Vickers):
 3000 (87 Rc)
  • Oxidation Temperature:
 400°C (750°F)
  • Friction Coefficient:
 .45
  • Thickness:
 2-4 microns
  • Surface Roughness (Ramm):
 .17

Applications: Excellent for drilling and reaming of cast irons, high silicon aluminum alloys, copper, and all abrasive materials. Also a good choice for milling in chip classes 20 and 40 materials. Because of the relatively low oxidation temperature of TiCN, coolant must be applied correctly to control the temperature at the cutting edge. Failure to do so can lead to premature wear of the coated surface.

TiAlN
Titanium Aluminum Nitride, violet bronze in color, actually forms a hard aluminum oxide layer in hot (> 800ºC), dry machining applications. This further reflects the heat back into the chip and away from the tool and workpiece. Greater ductility makes it a good choice for interrupted cuts. Increased production levels at higher feeds and speeds and longer tool life in high heat applications are the primary benefits.

  • Hardness (Vickers):
 2800 (85 Rc)
  • Oxidation Temperature:
 800°C (1450°F)
  • Friction Coefficient:
 .70
  • Thickness:
 2-4 microns
  • Surface Roughness (Ramm):
 .40

Applications: Excellent in milling and drilling of high strength steels, hard die steels, and high temperature alloys, including nickel base & titanium (chip classes 120 & 140) where high heat is generated and chipping is a problem.

AlTiN
Aluminum Titanium Nitride, black in color, is a harder, smoother variation of TiAlN. Created for abrasive and high temperature applications (> 800ºC). AlTiN creates an aluminum oxide layer during the cutting process. It is increasing in popularity for drilling, counterboring and milling.

  • Hardness (Vickers):
 4500 (90 Rc)
  • Oxidation Temperature:
 800°C (1450°F)
  • Friction Coefficient:
 .45
  • Thickness:
 2-4 microns
  • Surface Roughness (Ramm):
 .15

Applications: Excellent in dry milling of chip classes 20, 40, and 60. Because of the high hardness of the coating however, very hard steels may cause chipping of the cutting edge (first consider TiAlN). Can be used for wet milling of titanium alloys, high temperature alloys, and other abrasive and difficult to machine materials when chipping is not a problem