Knowde Enhanced TDS
Identification & Functionality
- Technologies
- Product Families
- Product Highlights
- XP61-C is a high solids coating system that can be applied to a dry film thickness of 6 to 20 mils (150 to 500 microns) on both carbon and stainless-steel tubes. The coating is non flammable and non reactive and has no VOC (Volatile Organic Compound) content.
- XP61-C can be easily applied and bonds well to properly prepared metal substrates. Due to its (water soluble) organic composition, XP61-C is very stable and will neither outgas nor cause skin irritations like many other high temperature coatings.
- Working properties of the coating exhibit an extended shelf life prior to exposure to air. Upon curing XP61-C becomes a durable ceramic coating that will provide corrosion protection of boiler furnace tubing and other steel substrates to 1800°F (982°C).
- XP61-C can also be used and for over-coating (sealing) industrial thermal sprayed coatings. A 0.004 to 0.008 (100-200 micron) thickness of XP61-C will provide increased corrosion protection while sealing porosity and enhancing thermal sprayed coating surface characteristics.
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Characteristics
- Resistant to 1800°F (982°C)
- Resistant to severe cyclic conditions
- Corrosion resistant
- Non insulating
- Reduces slagging and scale
- Resist gasses, oils, solvents and most acids
- Non-toxic
- Adheres to carbon steel, stainless steel, refractory and organic surfaces
- Good mechanical bonding
- High emissivity
Applications & Uses
- Markets
- Application Method
- Compatible Substrates & Surfaces
- Application in Industries
- Power plants
- Refineries
- Chemical facilities
- Cement plants
- Pulp and paper
- Steel processing
- Waste to energy plants
- Uses
- Boiler water wall tubes
- Superheater and reheater tubes
- Nose arch and slope tubes
- Stacks
- Kilns
- High heat ducts and piping
- Radiant furnace tubing
- Surface Preparation
- Surfaces to be coated must be dry and free of all chlorides, weld splatter, oil, dirt, grease, liquor and all other contaminants. Thermal sprayed coatings must be clean and the surface must be free of corrosive elements. Newly applied thermal spray can be coated without additional surface preparation.
- Before coating metal tubing or other substrates, round off all rough welds and sharp edges. Abrasive blast to achieve a NACE 1/ SSPC-SP5 (white blast) specification. Garnet or other hard sharp materials are recommended for abrasive blasting. A 3 mil (75 surface profile is recommended.
- Application Instructions
- Surface temperature must be a minimum of 5°F (3°C) above the dew point. Do not apply to steel temperatures below 50°F (10°C).
- Do not exceed dry film thickness recommendations.
- XP61-C is normally sprayed but if applied by brush mechanically mix container every 5 minutes during application to assure proper particle suspension.
- Warning : Do not thin XP61-C with any thinner as poor film characteristics may occur.
- Application to hot surfaces (+200°F, 93°C) will promote dry spray and may cause blistering to occur. XP61-C normally dries by ambient air drying. If the temperature is below 70°F (93°C) and the humidity is high, slower drying may occur. Low temperature oven or induced heat drying may be used to accelerate drying time. Do not exceed 200°F (93°C) during accelerated drying.
- XP61-C should be applied in minimum of three coats of 2-3 mils per coat. Applications in corrosive environments require a minimum of 12 mils (300 microns) be applied. Each coat must completely dry for a minimum of one hour before the second coat is applied. If heat cure is used (to accelerate drying) assure that the temperature does not exceed 200°F (93°C)
- If thicker coating is required allow each coat to completely dry for a minimum of one hour above 50°F before applying additional coats. Moderate heating can be applied between coats if required.
- Curing Requirements
After application allow the coating to ambient air dry above 50°F for minimum 24 hours.
- Cure for 60 minutes at 180°F
- Cure for 1 hour at 250°F
- Cure for 1 hour at 425°F
XP61-C is formulated to be cured in a boiler or furnace during normal start up procedures. When curing the coating in a boiler it is recommended that the boiler be “low fired” for 1.5 to 2 hours before starting normal boiler start up procedures.
- Equipment
Conventional or airless spray is recommended. It is recommended that only experienced industrial coating applicators be used to apply the coating. When coating boiler tubes it is important to adjust pressures and spray patterns as required to eliminate “runs, sags, or excessive thickness build up within the tube membranes.
- Mixing
- Use mechanical agitation for mixing and during application. Mix the coating until smooth and uniform in consistency.
- Note : Continuous mixing is required during coating application to assure that proper particle suspension is maintained in the slurry.
- While spraying, adjust agitator mixing speed to allow for proper material suspension without cavitation. It is recommended to filter or screen the material with (60 to 70 mesh) before application.
Properties
- Physical Properties
- Specifications
| Value | Units | Test Method / Conditions | |
| Finish | Sheen | - | - |
| Maximum Service Temperature | 1800.0 | °F | - |
| Bond Strength | 3260.0 | psi | - |
| Tensile Strength | 3412.0 | psi | - |
| Viscosity | 29.25 | cSt | - |
| Value | Units | Test Method / Conditions | |
| Dry Time Between Coats (50% R.H., 70°F) | 1.0 | hour | - |
| Volume Solids | 86.0 | % | - |
| Theoretical Coverage (1 mil. D.F.T.) | 600.0 | sq.ft./gal. | - |
| Thinning Liquid | None | - | - |
| Metal Temperature (During Application) | 50 - 150 | °F | - |
| Weight | 14.2 | lb / gal | - |
Storage & Handling
- Storage
- Shelf life : 1 year
- Storage temperature : 33°F - 100°F
- Clean - Up
All equipment should be cleaned with water before the coating dries.