Carboline Carboguard 893 SG is a versatile two component, economical self-priming, epoxy finish that demonstrates very good chemical and corrosion resistance. Used either as a primer, intermediate coat, or self-priming finish over steel and inorganic zinc primers. It may be topcoated with itself, or a broad variety of high-performance finish coats.

Carboguard 893 SG exhibits excellent wetting properties and can penetrate and adhere to marginally prepared surfaces. It has the added feature of having a one year recoat window before extensive surface prep is required.

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• Features and Benefits
• Product Specification
• Drying Times
• Surface Preparation
• Application Methods
• Application Conditions
• Health and Safety

Features and Benefits

• Ready to apply after mixing; no sweat-in time or thinning required
• Economical fit for use epoxy
• Available in a variety of rapid tint colours
• Attractive low sheen for tank exteriors
• Used as a primer, intermediate, or finish coat
• Power tool cleaned surfaces acceptable
• Optional low temperature (LT) cure Part B
• VOC compliant to current AIM regulations
• Eggshell finish

Product Specification

Drying Times

• These times are based on a 100-150 micron dry film thickness for non-immersion
• Higher film thickness, insufficient ventilation or cooler temperatures will require longer cure times and could result in solvent entrapment and premature failure
• Excessive humidity or condensation on the surface during curing can interfere with the cure, can cause discolouration, and may result in a surface haze. Any haze or blush must be removed by water washing before recoating
• Recoat intervals may vary from those listed above when using under intumescent fireproofing products
• Consult Rawlins on Tech - 0113 2455450 (option 2) or [email protected] for recommended cure times before applying Carboline intumescent products
• If the maximum recoat times have been exceeded, the surface must be abraded by sweep blasting or sanding prior to the application of additional coats.
• For force curing, contact Rawlins for specific requirements

Surface Preparation

General

• Surfaces must be clean and dry
• Employ adequate methods to remove dirt, dust, oil, and all other contaminants that could interfere with adhesion of the coating

Steel

For most applications:

• SSPC-SP6 to obtain a blast profile of 25-50 microns. May also be applied over SSPC-SP 3 for certain applications
• When using under fireproofing products, defer to the primer surface preparation requirements in the product data sheet of the fireproofing product

Galvanised Steel

• Galvanising requires a roughened surface for optimum adhesion/performance of high build epoxies
• Remove any contaminants per SSPC-SP1; ensure there are no chemical treatments that may interfere with adhesion; and abrade the surface to establish a suitable roughness (typically 1 mil). SSPC-SP7 or SP11 are acceptable methods
• When using under fireproofing products, defer to the primer surface preparation requirements in the product data sheet of the fireproofing product

Concrete or CMU

• Concrete shall be designed, placed, cured, and prepared per NACE No. 6/SSPC-SP 13, latest edition
• Abrade to remove all laitance, loose concrete, etc. and to create surface profile in accordance with ICRI CSP 2-5

Application Methods

Application Conditions

• This product simply requires the substrate temperature to be 3°C above the dewpoint
• Condensation due to substrate temperatures below the dew point can cause flash rusting on prepared steel and interfere with proper adhesion to the substrate
• Special application techniques may be required above or below normal application conditions
• Surface and ambient temperatures may be reduced to 2°C when using the (LT) cure

Health and Safety

Clean Up

• Use Thinner 2 or Acetone
• In case of spillage, absorb and dispose of in accordance with local applicable regulations

Safety

• Read and follow all caution statements on this product data sheet and on the SDS for this product and use personal protective equipment as directed
• Employ normal workmanlike safety precautions

Ventilation

• When used in enclosed areas, thorough air circulation must be used during and after application until the coating is cured.
• The ventilation system should be capable of preventing the solvent vapor concentration from reaching the lower explosion limit for the solvents used
• User should test and monitor exposure levels to ensure all personnel are below guidelines
• If not sure or if not able to monitor levels, use MSHA/NIOSH approved supplied air respirator

• Refer to the product data sheet and safety data sheet in the attachments section above for further details