The C3Y coating, water soluble modified phenolic resin equivalent to C3 of AISI, provides thick coating with excellent surface insulation resistivity. This coating has better corrosion resistance than C3M/C 3ML. This coating cannot with stand stress relieve annealing. It is suitable for applications where very high level of inter laminar resistance is required such as in medium to large machines, traction motors, high voltage machines & turbogenerators.
Parameter Value
Colour1 Grey
Average Coating Thickness µm 5.0 ± 1.0
Stacking Factor3 >96.0
Typical Average Insulation Resistivity4 In Amps 0.11
Weldable No
Pencil Hardness 8H
Punchability5 2.0 X
Corrosion Resistance Very Good
Resistant To Organic Solvents Oil & Lubricant Oil Resist
Resistant To Freon Gas --

  • 1 Colour deviation is possible without effect on coating properties.
  • 2 Coating thickness is checked by Fischer Deltascope Coating Thickness Tester.
  • 3 Stacking factor is checked in accordance, with IS 649: 1997.
  • 4 Insulation resistivity is checked in accordance, with IS 649 : 1997.
  • 5 X - Punchability of Bare Steel.