MCHB 100

Two-component, Heavy-Duty, Coal-Tar based Epoxy Coating for Steel and Concrete

This black, two-component coal tar epoxy coating (A:B = 4:1) comes in a 20L pack (16kg A + 4kg B) with a 12-month shelf life at 5–38°C. Store in a cool, covered area; use air-conditioned storage in tropical climates. Avoid contact with eyes, skin, and food. Keep away from children and animals, and reseal after use.

Available Pack Sizes

20Kgs

Coverage

-

Application

MCHB 101 is suitable for structures in marine atmospheres and can be used as a UV-resistant top coat over epoxy systems.

Advantages
  • Low viscosity formulation helps in easy application by brush or spray. Flexible anti-corrosive/preventive coating for structures - MS or concrete - even where the structure is in continuous contact with water or submerged. Provides excellent resistance to corrosion, impact, thermal shock and abrasion. Cures to a hard, smooth, and flexible surface with excellent resistance to sea/salt water, oil, acids, alkalis, crude oil, and minerals. Compatible with cathodic protection.
Application Information

Substrate Temperature: +10℃ Min / +40C Max
Ambient Temperature: +10C Min / +40°C
Max Substrate Moisture Content: <5%

Application Methodology

Surface Preparation: Clean the surface using a metal brush or shot blasting to remove rust, oil, and other contaminants. Mixing: Stir each component separately using a hand drill-type stirrer before mixing them together. Allow the mixture to sit for 5 minutes before application to allow any air bubbles to subside. Application: Apply MCHB 101 with a brush or spray. For spray applications, a plural spray system is recommended.

Application Methodology Surface Preparation Steel

Blast cleaned to ISO-Sa22 and remove dust, flakes, oil, grease or other loose foreign particles. Application of MCHB 100 should be straight after steel preparation to prevent surface rusting. In case of new concrete, ensure the concrete is at least 28 days old and remove any loose foreign particles by compressed air. Ensure the ambient temperature is not less than 10°C and not more than 40C at the time of coating. To avoid condensation of moisture onto the coating substrate prior to application, RH should not be above 80% and substrate temperature should be at least more than 3C above Dew point.

Material Preparation

Stir drums of each component of MCHB 100 thoroughly to a homogenous and uniform mix with a slow speed stirrer fitted with a suitable mixing paddle.Component A and B in a suitably sized container. Mix properly for 3-5 minutes with a slow speed stirrer until a homogeneous color is achieved. Keep the paddle below the surface to avoid entrapping air. Do not mix by hand. The temperature of the mixed base and hardener should preferably be more than 12C, otherwise extra thinner may be required to obtain application viscosity. Thinner addition results in reduced sag resistance, volume solid, and DFT. Apply the material as supplied, do not dilute with thinner.

Technical Characteristics at 28C, 50% RH
# Property Method Result
1 Recommended Wet Film Thickness, micron ASTM D 4414 150-200
2 DFT @ theoretical coverage 5 m2 /L, micron IS 101 125 ±10
3 Volume Solids, % ASTM D 2697 65±5
4 Scratch Resistance ASTM G 171 Up to 2.00 kg
5 Elongation, % ASTM D 638 30-35
6 Tensile Strength, MPa ASTM D 638 3-3.5
7 Shore A hardness after 7 days ASTM D 2240 60 ±5
8 Density of Mix, gm/cc ASTM D 1475 1.30 ±0.05
9 Flash Point, Component A IS 101-1-6 >30
9 Flash Point, Component B IS 101-1-6 >30
10 Pot Life, hrs., 100 gm. sample ASTM D 2471 3.5-4
11 Adhesion pull-off, MPa on steel ASTM D 4541 4-6
12 Resistance to Micro-organisms ASTM G 21 Passes
13 Recommended Wet Film Thickness, micron ASTM D 4414 150-200
14 Flexibility ASTM D 522 1/8" passes
15 Weather-ability test, 1000 hrs. QUV ASTM G 154 Passes
16 Immersion test, 30 days DIW, 1% H2SO4, 1% NaOH AWWA C 210 No blistering/peeling/disbonding
17 Salt Spray, 500 hrs., @ 100 microns DFT ASTM B 117 Passes
18 Water Resistance, Immersion- 7 days ASTM D 870 Passes
19 Abrasion Resistance 1000 cycles, CS 17, mg los ASTM D 4060 110 ± 10
20 Dielectric strength, V/mil AWWA C 210 250-260
20 Cathodic Disbondment, 30 days, mm AWWA C 210 <10
Application Temperature, C
# Condition Application Surface Ambient Conditional Continuous Occasional
1 Minimum 10 10 10 95 -10 -25
2 Maximum 49 50 41 120 - -
Curing Schedule
# Temperature Touch Dry hrs Recoat, hrs Full Cure, Days
1 30C (86°F) 8 8-30 7
Data Reliability

All technical data provided in this document are based on laboratory tests. Actual performance may vary due to factors beyond our control.

Regional Compliance

Product specifications may vary based on local regulations. Please refer to the local Product Data Sheet for precise information.

Legal Disclaimer

The information and recommendations regarding the application and end-use of Carbolink products are provided in good faith based on our current knowledge and experience. Due to variations in materials, substrates, and actual site conditions, no warranty of merchantability or fitness for a specific purpose can be inferred. The user must determine the product's suitability for the intended application. Carbolink reserves the right to change the properties of its products. All proprietary rights of third parties must be observed. Orders are subject to our current terms of sale and delivery. Always refer to the most recent local Product Data Sheet, available upon request.

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We design our materials for exceptional lifespan and unwavering reliability.

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Exceptional Performance at an Outstanding Price

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Meeting Industry Standards for Performance and Safety