Fireside Coating F61

Fireside Coating F61

F- 61 Ceramic Boiler tube coating:

F-61 Brochure PDF

F-61 is a ceramic coating made to prevent corrosion and erosion of boiler tubes in PC power plants.   
F-61 is a high solid coating system applied to a dry film thickness of 150-500 μm.   Fireside F-61 does not contain VOC's.  F-61 is thermally conductive and bonds well to properly prepared carbon steel or stainless steel substrates and increases thermal efficiency. F-61 ceramic organic composition is very stable and does not outgas, nor cause skin irritations like many other high temperature coatings.  Cured F-61 is a durable ceramic coating that will provide protection to boiler tubing and other steel substrates to 1093° C

Fireside Coatings F-61 is used as a thermal spray sealer and under insulation or fire brick to prevent “cold side” and high heat corrosion.


  • Color: Green, Grey, White
  • Finish Smooth
  • Maximum service temperature 2,000° F (1093° C)
  • Bond Strength 3,800 psi



  • Resistant to 2,000° F (1,093° C)
  • Resistant to severe cycling conditions
  • Corrosion/ Erosion resistant
  • Thermally conductive, promotes heat transfer
  • Reduces slagging
  • Resist gases, oils, solvents, and most acids
  • Non-toxic and odorless
  • Adheres to carbon steel, stainless steel, refractory, and organic surfaces



  • Power Plants
  • Refineries
  • Chemical Facilities
  • Cement Plants
  • Pulp and Paper
  • Steel Processing
  • Waste to Energy Plants



  • Boiler water wall tubes
  • Superheater and reheater tubes
  • Nose arch and slope tubes
  • High heat ducts and piping


Components Non-flammable/non-reactive
Dry Time between coats @ 50% R.H., 70° F 1 hour
Volume Solids 88%
Theoretical Coverage @ 1 mil. D.F.T. 600 sq. ft./gal.
Metal Temperature during application 50° F – 200° F
Weight per gallon 14.5 lb
Storage Temperature 33° - 100° F (0.5° - 38° C)
Shelf life (before mixing) 1 year
Viscosity 21.06 (cSt)

Surfaces to be coated must be dry and free of all chlorides, weld splatter, oil, dirt, grease, liquor, and all other contaminants. Round off all rough welds and sharp edges.  Abrasive blast to a SSPC-SP5 (white blast) specification. Garnet or other hard sharp materials are recommended for abrasive blasting.

Usually F-61 can be cured using normal equipment start-up procedures. If controlling the cure, do not exceed 200° F (93° C) for the first hour. After one hour the coating can be accelerated 100° F (38° C) per hour, until full boiler operating temperature is achieved.

All equipment should be cleaned with soap and water before the coating dries.
Consult Material Safety Data Sheets and container label caution statements for any hazards in handling this material.