Carboline Carbozinc 11


Carboline Carbozinc 11 is a two-component, corrosion resistant primer that protects steel galvanically in the harshest environments.

  • Meets Class B slip co-efficient and creep testing criteria for use on faying surfaces
  • Rapid cure. Dry to handle in 45 minutes at 16°C and 50% relative humidity
  • Low temperature cure down to -18°C
  • High zinc loading
  • Zinc supplied meets ASTM D520, Type II. (Type III available on special order)
  • Meets SSPC Paint 20 Type I, Level 1 for zinc content
  • Very good resistance to salting
  • May be applied with standard airless or conventional spray equipment
  • VOC compliant in certain areas
  • Flat finish

£143.64 Incl. VAT
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Carboline Carbozinc 11 is a two-component, corrosion resistant primer that protects steel galvanically in the harshest environments.

For over five decades, Carbozinc 11 has been the industry standard for high-performance inorganic zinc protection on steel structures worldwide.

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Features and Benefits

  • Rapid cure. Dry to handle in 45 minutes 
  • Low temperature cure down to -18°C
  • High zinc loading
  • Very good resistance to salting
  • May be applied with standard airless or conventional spray equipment
  • VOC compliant in certain areas
  • Flat finish
  • Meets Class B slip co-efficient and creep testing criteria for use on faying surfaces
  • Zinc supplied meets ASTM D520, Type II. (Type III available on special order)
  • Meets SSPC Paint 20 Type I, Level 1 for zinc content

Product Specification

Technical Data
Carboline Carbozinc 11
Volume Solids: 62.3% +/- 2%
Total Zinc Dust in Dry Film: By Weight: 85%
Primer: Self-priming
Topcoats Not required for certain exposures. May be topcoated with waterborne acrylics, epoxies, polyurethanes, High-Temperature Silicones and other coatings as recommended by Rawlins on Tech - 0113 2455450 (option 2) or [email protected]. Under certain conditions a mist coat may be required to minimize bubbling
Theoretical Coverage Rate: 24.5 m²/l at 25 microns DFT
8.2 m²/l at 75 microns DFT

Measured in accordance with ASTM D 269

Allow for loss in mixing and application

Dry Film Thickness: 51 - 76 microns
Dry film thickness more than 150 microns is not recommended
VOC Values:


7 oz/gal w/ Thinner 21: 492 g/l

5 oz/gal w/ Thinner 26: 492 g/l

5 oz/gal w/ Thinner 33: 492 g/l

8 oz/gal w/ Thinner 254: 503 g/l

These are nominal values

Maximum Service Temperature:


Continuous: 400°C

Non-Continuous: 427°C

With recommended high heat topcoats:

Continuous: 540°C

Non-Continuous: 650°C

Shelf Life: Part A: 12 months at 24°C
Part B: 24 months at 24°C
Storage Temperature and Humidity: 4-38°C
0-90% Relative Humidity

Performance Data
Test Method System Results
AASHTO M300 Bullet Hole Immersion Paragraph 4.6.9 1 ct. CZ11 over Abrasive blasted steel No blistering or rusting of coating or rusting of bare steel area after 650 hrs. Immersion in 5% sodium chloride
ASTM A-325 Slip Co-efficient Blasted Steel 1 ct. CZ 11 @6 mils (150 microns) 0.68; meets requirement for Class B rating
ASTM B117 Salt Spray 1 ct. CZ11 at 2 mils dry film thickness over blasted steel. No rusting blistering cracking delamination after 43000 hrs. Moderate salting of the surface only
ASTM D3363 Pencil Hardness 1 ct. CZ11 Pencil Hardness "2H"

Drying Times

Curing Schedule
Surface Temp Dry to Handle Dry to Topcoat Final Cure General
-18°C 4 Hours 7 Days NR
4°C 1 Hour 2 Days 4 Days
16°C 45 Minutes 24 Hours 3 Days
27°C 45 Minutes 18 Hours 2 Days
38°C 15 Minutes 16 Hours 36 Hours

  • These times are based on a 75-100 micron dry film thickness. Higher film thickness, insufficient ventilation and/or cooler temperatures will require longer cure times and could result in solvent entrapment and premature failure
  • Humidity levels below 50% will require longer cure times
  • Notes: Maximum recoat time is unlimited
  • Must have a clean, dry surface free of chalk, zinc salts, etc per typical good painting practices
  • Loose zinc must be removed from the cured film by rubbing with fiberglass screen wire if: 1) The Carbozinc 11 is to be used without a topcoat in immersion service and "zinc pick up" could be detrimental, or 2) When "dry spray/overspray" is evident on the cured film and a topcoat will be applied
  • For accelerated curing or where the relative humidity is below 40%, allow an initial 2-hour ambient cure followed by misting with clean potable water or steam to keep the coating wet for a minimum of 8 hours. The coating is considered cured sufficiently to topcoat and/or immersion service when the coating achieves a "2H" pencil hardness per ASTM D3363 or a minimum rating of 4 per ASTM D4752
  • 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

Surface Preparation


  • Remove all oil or grease from the surface to be coated with Thinner 2 or Surface Cleaner 3 (refer to Surface Cleaner 3 Instructions) in accordance with SSPC-SP1


  • Non-Immersion: SSPC-SP6 and obtain a 25-75 micron angular blast profile
  • When using under fireproofing products, defer to the primer surface preparation requirements in the product data sheet of the fireproofing product

Application Methods

Product Information
Mixing: Power mix base, then combine and power mix as follows. Pour zinc filler very slowly into premixed base with continuous agitation. Mix until free of lumps. Pour mixture through a 30 mesh screen. Sifting zinc through a screen will aid in the mixing process by breaking up or catching dry zinc lumps
Do not mix partial kits
Thinning: May be thinned up to 5 oz/gal (4%) with Thinner 26 or Thinner 33 for ambient and warm surfaces
In cool weather (below 4°C), thin up to 7 oz/gal (6%) with Thinner 21
Use of thinners other than those supplied or recommended by Carboline may adversely affect product performance and void product warranty, whether expressed or implied

1 Gal. Kit

  • Part A - 2.84L
  • Zinc Filler - 6.6 kg

5 Gal Kit

  • Part A - 14.2L
  • Zinc Filler - 33 kg
Pot Life: 8 Hours at 24°C and less at higher temperatures. Pot life ends when coating becomes too viscous to use
Spray Application: Keep material under mild agitation during application. If spraying stops for more than 10 minutes, recirculate the material remaining in the spray line. Do not leave mixed coating in the hoses during work stoppages
Conventional Spray: Agitated pressure pot equipped with dual regulators, 3/8” (0.95 cm) I.D. minimum material hose, with a maximum length of 50 feet; 0.070” (0.18 cm) I.D. fluid tip and appropriate air cap
Airless Spray: Pump Ratio: 30:1 min
Volume Output: 3.0 gpm min
Material Hose: 3/8” (0.95 cm) I.D. min
Tip Size: .019-.023”
Output PSI: 1500-2000
Filter Size: 60 mesh
Brush: For touch up of areas less than one square foot only. Use medium bristle brush and avoid over brushing
Roller: Do not apply by roller

Application Conditions

Product Conditions
Condition Material Surface Ambient Humidity
Minimum -18°C -18°C -18°C 30%
Maximum 54°C 93°C 54°C 95%

  • This product simply requires the substrate temperature to be above the dew point
  • 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

Health and Safety

Clean Up

  • Use Thinner 21 or Isopropanol
  • In case of spillage, absorb and dispose of in accordance with local applicable regulations


  • Read and follow all caution statements on this product data sheet and on the safety data sheets for this product and use personal protective equipment as directed
  • Employ normal workmanlike safety precautions
  • Hypersensitive persons should wear protective clothing, gloves and use protective cream on face, hands, and all exposed areas


  • When used as a tank lining or 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
  • In addition to ensuring proper ventilation, appropriate respirators must be used by all application personnel
  • Refer to the product data sheet and safety data sheets in the attachments section above for further details
Product Details

Data sheet

For Use On
Application Method
Brush, Roller, Spray
Standard / Ready Mixed
Single, Two or Three Pack
Pack Size
1000 ft²/gal at 1 mil (24.5 m²/l at 25 microns) DFT - 333 ft²/gal at 3 mils (8.2 m²/l at 75 microns) DFT
Recommended Thinner/Cleaner
Thinner 21
Max. Application Temperature
Material: 54°C , Surface: 93°C, Ambient: 54°C, Humidity: 95%
Min. Application Temperature
Material: -18°C , Surface: -18°C, Ambient: -18°C, Humidity: 30%
Solids by Volume
62.3% +/- 2%
Shelf Life (from date of manufacture)
Part A: 12 months at 24°C - ,Part B: 24 months at 24°C
Recommended Dry Film Thickness
2 - 3 mils (51 - 76 microns)
UN Number (Base)
UN Number (Base)
Fully Cured
-18°C: NR - 4°C: 4 Days - 16°C: 3 Days - 27°C: 2 Days - 38°C: 36 Hours

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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