ALTIC SI BASECOAT is a specialized thermal insulation coating designed as the primary insulating layer within the ALTIC SI Coating System. It is applied over the compatible ALTIC SI Primer to help reduce heat transfer from hot metal surfaces.
The coating system is designed for industrial applications where thermal insulation, oxidation protection and surface protection are required. ALTIC SI BASECOAT works as the central thermal insulation layer, while the primer provides the substrate foundation and the topcoat provides additional environmental protection.
The system can be considered for suitable pipelines, ducts, steam lines, process equipment, industrial structures and other metal surfaces exposed to elevated temperatures.
Key Features & Benefits
- Specialized thermal insulation basecoat
- Designed for use within the ALTIC SI coating system
- Helps reduce heat transfer from hot metal surfaces
- Water-based coating system
- Suitable for compatible steel and metal substrates
- Helps control heat transfer through conduction, convection and radiation
- Designed for industrial thermal insulation applications
- Can be applied over the compatible ALTIC SI Primer
- Suitable for use with ALTIC SI Topcoat as part of a complete system
- Designed for industrial maintenance and thermal protection applications
- Suitable for selected online coating applications where conditions permit
ALTIC SI Coating System
ALTIC SI BASECOAT is the main thermal insulation layer of the three-layer ALTIC SI system.
1. ALTIC SI PRIMER
The primer prepares and protects the metal substrate and helps establish a suitable foundation for the system.
2. ALTIC SI BASECOAT
The basecoat provides the primary thermal insulation layer and is applied to the required thickness according to the temperature-reduction requirement.
3. ALTIC SI TOPCOAT
The topcoat provides additional protection against weather and environmental exposure.
Prepared Metal → SI Primer → SI Basecoat → SI Topcoat
Using the complete coating system allows each layer to perform its intended function.
Thermal Insulation Performance
ALTIC SI BASECOAT is designed to provide thermal insulation by helping control the transfer of heat from the hot substrate.
The ALTIC SI system is intended to address the three primary mechanisms of heat transfer:
- Conduction
- Convection
- Radiation
The required basecoat thickness depends on factors such as:
- Operating temperature
- Desired surface-temperature reduction
- Substrate material
- Heat source
- Equipment geometry
- Environmental conditions
- Required thermal performance
Therefore, coating thickness should be determined according to the applicable ALTIC technical specification rather than using a fixed thickness for every application.
Typical Applications
ALTIC SI BASECOAT may be suitable for thermal insulation applications involving:
- Hot industrial pipelines
- Steam pipelines
- Industrial ducts
- Process equipment
- Industrial vessels
- Fire walls
- Carbon steel structures
- Stainless steel surfaces
- Low-alloy steel
- Industrial heating equipment
- Thermal insulation systems
- High-temperature industrial assets
Actual suitability should be confirmed according to the operating conditions and substrate.
Surface Preparation
ALTIC SI BASECOAT should be applied over a properly prepared and compatible ALTIC SI Primer.
Before application:
- Ensure the metal substrate has been properly prepared.
- Ensure the compatible SI Primer has been applied.
- Confirm that the primer has reached the required curing condition.
- Remove dust, dirt or other contaminants from the surface.
- Confirm that the primer surface is suitable for receiving the basecoat.
Do not apply the basecoat over loose, contaminated or damaged primer.
Application Method
ALTIC SI BASECOAT should be applied according to the latest ALTIC application instructions.
General Application Procedure
- Confirm that the SI Primer is properly cured.
- Mechanically stir the basecoat at low speed until homogeneous.
- Do not dilute unless specifically permitted by the latest TDS.
- Apply the basecoat using the recommended texture/spray equipment.
- Build the coating thickness gradually through the required number of applications.
- Allow adequate drying between applications according to the operating conditions.
- Check the resulting coating thickness.
- Allow the completed basecoat to reach the specified curing condition.
- Apply ALTIC SI TOPCOAT where required.
The application equipment, nozzle/opening, coating thickness and drying conditions should be confirmed from the latest product TDS.
Coating Thickness
The thickness of ALTIC SI BASECOAT is an important part of the thermal insulation design.
Unlike conventional protective coatings where a standard film thickness may be sufficient, thermal insulation coating thickness should be selected according to the required temperature reduction.
Factors affecting the required thickness include:
- Hot-side temperature
- Desired outside surface temperature
- Substrate type
- Equipment geometry
- Ambient temperature
- Heat exposure
- Required energy/heat-loss reduction
For project-specific calculations, the required thickness should be determined using the applicable ALTIC technical specification or technical consultation.
Online Application
One of the potential applications of the ALTIC SI system is online coating of suitable industrial equipment, reducing the need for complete shutdown where application conditions allow.
Online application requires careful assessment of:
- Actual surface temperature
- Equipment accessibility
- Application safety
- Curing requirements
- Operating conditions
- Personnel protection
The system should only be applied online where the approved application procedure and site safety requirements permit it.
Recommended System
For a complete thermal insulation and protective system:
Metal Substrate
↓
ALTIC SI PRIMER
↓
ALTIC SI BASECOAT
↓
ALTIC SI TOPCOAT
↓
Thermal Insulation & Environmental Protection
The primer grade should be selected according to the operating temperature and the complete system specification.
Environmental & Surface Protection
The ALTIC SI system is designed as an inorganic/water-based coating system and is intended to provide thermal insulation without relying on conventional fibrous insulation materials.
The system can also help provide a protective coating solution for industrial metal surfaces where moisture, weather and oxidation protection are important considerations.
ALTIC SI TOPCOAT should be used where additional weather or environmental protection is required.
Maintenance & Inspection
Regular inspection of the completed coating system is recommended, particularly on equipment exposed to continuous thermal cycling.
Inspect for:
- Cracking
- Peeling
- Mechanical damage
- Delamination
- Surface contamination
- Damage to the topcoat
- Areas of exposed substrate
Any damaged areas should be repaired using the appropriate ALTIC system procedure.
Safety & Handling
Use appropriate PPE during surface preparation and application.
Ensure adequate ventilation and follow site-specific industrial safety procedures. When applying coatings to hot operating equipment, conduct a proper risk assessment and follow the approved online-application procedure.
Refer to the latest SDS for detailed handling, storage, first-aid and disposal information.
Storage
Store ALTIC SI BASECOAT in its original sealed container in a suitable cool and dry location. Protect the product from contamination, extreme conditions and direct sunlight.
Refer to the latest TDS/SDS for exact shelf life, packaging and storage requirements.
Why Choose ALTIC SI BASECOAT?
ALTIC SI BASECOAT provides the primary thermal insulation layer within the ALTIC SI coating system. It is designed to help reduce heat transfer from suitable hot metal surfaces while working together with the SI Primer and SI Topcoat to create a complete thermal insulation and protective system.
For optimum performance, select the complete coating system according to the actual operating temperature and required thermal reduction, and follow the recommended application and curing procedure.
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