CARBOZINC 11 by CARBOLINE

COVERAGE RATES

2 - 3 mils (51 -71 microns)

Dry film thickness in excess of 6.0 mils (150 microns) is not recommended.

• 333 SF/gal at 3.0 mils (8.2 ms/l at 75 microns) DFT
• 1,000 SF/gal at 1.0 mils (24.5 ms/l at 25 microns) DFT

Measured in accordance with ASTM D 2697. Allow for loss in mixing and application.

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.

FEATURES

• Meets Class B slip co-efficient and creep testing criteria for use on faying surfaces.
• Rapid cure. Dry to handle in 45 minutes at 60°F (16°C) and 50% relative humidity
• Meets FDA requirements
• Zinc supplied meets ASTM D520 (Type II)*
• 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

MIXING INSTRUCTIONS

Ratio: 1:1 (A to B)

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

Ambient and warm surfaces: Up to 12 oz/gal (10%) with Thinner 26 or 33 Very warm or windy conditions (above 85°F/29°C): Up to 12 oz/gal (10%) with Thinner 254 Cool weather and low humidity (below 40°F /4°C): Up to 12 oz/gal (10%) with Thinner 21 or 237 Thinner should be added in accordance with local VOC regulations. 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 - 0.75 gal (2.84 L)  
• 1 Gal Kit - Zinc Filler - 14.6 lbs (6.6 kg)
• 5 Gal Kit - Part A - 3.75 gal (14.2 L)
• 5 Gal Kit - Zinc Filler - 73 lbs (33 kg)

1. How Large is the Structure? 

Size plays a big role in corrosion protection decisions. For smaller steel components like handrails, stair treads, angle irons, braces, or connectors, hot-dip galvanizing shines as the most budget-friendly option.

Take the tall electrical transmission towers stretching across rural landscapes—built from many small steel pieces—as a perfect example. These galvanized structures can endure for decades. Hot-dip galvanizing excels with smaller parts.

• Small structures and parts are good for hot-dip applications
• Large structures like bridges are more economical to treat with inorganic zinc-rich primers like Carbozinc 11 

2. What Environment Will It Face? 

Beyond size, the steel’s expected surroundings matter. For rural or mild industrial settings, hot-dip galvanizing is a top pick. But in marine (salty) or harsh industrial environments, studies and real-world use show galvanizing falters without a topcoat.

Inorganic zinc-rich primers, however, thrive in marine conditions thanks to their porous film. The tough, inert silicate binder locks zinc particles in place, offering more surface area for galvanic protection.
While they outshine galvanizing in salty air, they’re still often topcoated to maximize lifespan.

In industrial settings with acidic or caustic conditions, both methods need topcoats to shield the zinc from chemical damage. The right topcoat depends on the exposure, desired look, and how long the protection needs to last.