PRODUCT DATA SHEET May 1, 2018 (Revision of October 26, 2016)

AMERCOAT® 235

DESCRIPTION
Two-component, multi-purpose phenalkamine epoxy

PRINCIPAL CHARACTERISTICS
• Universal epoxy coating suitable for ballast tanks, decks, topside, superstructure, and underwater hull
• Exceptional corrosion protection in salt and fresh water immersion and corrosive chemical environments
• Good adhesion to damp surfaces
• Heavy industry, structural steel
• Surface tolerant, compatible with water jetted surfaces

COLOR AND GLOSS LEVEL

• Offwhite, haze gray, oxide red, black, buff
• Semi-gloss

Note: Product is not color stable. Colors will change on exposure to sunlight. Color matches are approximate

BASIC DATA AT 68°F (20°C)

Data for mixed product

Number of components Two

Volume solids 68 ± 2%

VOC (Supplied) EPA Method 24: 2.4 lb/US gal (287.6 g/l)

Recommended dry film thickness 4.0 - 8.0 mils (100 - 200 µm) depending on system

Theoretical spreading rate 182 ft²/US gal for 6.0 mils (4.5 m²/l for 150 µm)

Shelf life Base: at least 36 months when stored cool and dry
Hardener: at least 24 months when stored cool and dry

Notes:
- See ADDITIONAL DATA – Overcoating intervals
- See ADDITIONAL DATA – Curing time

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PRODUCT DATA SHEET May 1, 2018 (Revision of October 26, 2016)

AMERCOAT® 235

RECOMMENDED SUBSTRATE CONDITIONS AND TEMPERATURES

• Coating performance is, in general, proportional to the degree of surface preparation
• Abrasive blasting is usually the most effective and economical method. When this is impossible or impractical, coating
can be applied over mechanically cleaned surfaces
• The coating may be used over most types of tightly adhering coatings prepared with PREP 88. A test patch is
recommended for use over existing coatings
• The surface preparation recommended for the coating is to include removal of water, salt, dirt, oil, loose rust and all rust
scale
• The minimum standard for nonimmersion service is Steel Structures Painting Council Standard SSPC SP-2; for
immersion service, the minimum standard is SSPC SP-3, in each case a coat of AMERLOCK Sealer followed by a full coat
of the coating can also be used

Steel
• Abrasive blast with an angular abrasive to an SSPC SP-10 cleanliness or higher for tank lining service. Achieve a surface
profile of 2.0 – 4.0 mils (50 – 100 µm)
• All direct to metal coatings provide the maximum performance over near white blasted surfaces. There are, however,
situations and cost limitations, where grit blasting to near white metal is not possible
• Designed to provide excellent protection over less than ideal surface preparation
• SSPC SP WJ-2(L) is also acceptable over a previous blasted surface
• Contact PPG for maximum allowable salt containment levels

Concrete
• Prepare in accordance with SSPC SP-13 guidelines
• Abrade surface per ASTM D-4259 to remove all efflorescence and laitance, to expose subsurface voids, and to provide a
surface roughness equivalent of 60 grit sandpaper or coarser
• Test for moisture by conducting a plastic sheet test in accordance with ASTM D4263
• Fill voids as necessary with AMERCOAT 114 A epoxy filler

Galvanized steel
• Remove oil or soap film with detergent or emulsion cleaner, then use a phosphatizing conversion coating
• Lightly abrasive blast with a fine abrasive in accordance with SSPC SP-16 guidelines to achieve a profile of 1.5 – 3.0 mils
(38 – 75 µm). When light abrasive blasting is not possible, galvanizing can be treated with a suitable zinc phosphate
conversion coating.
• Galvanizing that has at least 12 months of exterior weathering and has a rough surface with white rust present may be
over-coated after power washing and cleaning to remove white rust and other contaminants
• The surface must have a measurable profile
• A test patch is recommended to determine compatibility and adhesion
• Not recommended over chromate sealed galvanizing without blasting to thoroughly remove chromates. Adhesion
problems may occur

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PRODUCT DATA SHEET May 1, 2018 (Revision of October 26, 2016)

AMERCOAT® 235

Non-ferrous metals and stainless steel

• Abrasive blast in accordance with SSPC SP-16 guidelines to achieve a uniform and dense 1.5-4.0 mil anchor profile. Size
and hardness of abrasive should be adjusted as necessary based on the hardness of the substrate
• Aluminum may be treated with a surface treatment compliant with Mil-DTL-5541 or equivalent (non-immersion
applications only).

Aged coatings
• All surfaces must be clean, dry, tightly bonded and free of all loose paint, corrosion products or chalky residue
• Abrade surface, or clean with PREP 88. This product is compatible over most types of properly applied and tightly
adhering coatings, however, a test patch is recommended to confirm compatibility

Repair
• Prepare damaged areas to original surface preparation specifications, feathering edges of intact coating. Thoroughly
remove dust or abrasive residue before touch-up.

Substrate temperature and application conditions

• Surface temperature during application should be between 20°F (-7°C) and 140°F (60°C)
• Surface temperature during application should be at least 5°F (3°C) above dew point
• Ambient temperature during application and curing should be between 20°F (-7°C) and 122°F (50°C)
• Relative humidity during application and curing should not exceed 85%

SYSTEM SPECIFICATION
• Primers: Inorganic zinc primers or zinc rich epoxies (atmospheric service)
• Topcoats: AMERCOAT 450 series polyurethanes, AMERSHIELD, PSX 700, AMERCOAT 229T, PITTHANE polyurethanes,
DURATHANE DTM

INSTRUCTIONS FOR USE

Mixing ratio by volume: base to hardener 80:20 (4:1)
• Pre-mix base component with a pneumatic air mixer at moderate speeds to homogenize the container. Add hardener to
base and agitate with a power mixer for 1–2 minutes until completely dispersed
• This product may develop a "false body" which can be broken down with mechanical agitation prior to thinning.

Induction time
Mixed product induction time

Mixed product Induction time

temperature
50°F (10°C) 30 minutes
70°F (21°C) 15 minutes

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PRODUCT DATA SHEET May 1, 2018 (Revision of October 26, 2016)

AMERCOAT® 235

Pot life
4.5 hours at 70°F (21°C)

Note: See ADDITIONAL DATA – Pot life

Application
• Area should be sheltered from airborne particulates and pollutants
• Avoid combustion gases or other sources of carbon dioxide that may promote amine blush and ambering of light colors
• Ensure good ventilation during application and curing
• Provide shelter to prevent wind from affecting spray patterns

Air spray

Recommended thinner
THINNER 91-82 (AMERCOAT T-10) or PPG 91-92 thinner

Volume of thinner
0 - 15%

Airless spray

Recommended thinner
THINNER 91-82 (AMERCOAT T-10) or PPG 91-92 thinner

Nozzle orifice
0.019 – 0.023 in (approx. 0.48 – 0.58 mm)

Nozzle pressure
16.5 - 20.7 MPa (approx. 166 - 207 bar; 2400 - 3000 p.s.i.)

Brush/roller
• Use a high quality natural bristle brush and/or solvent resistant, 3/8" nap roller. Ensure brush/roller is well loaded to avoid
air entrainment. Multiple coats may be necessary to achieve adequate film-build

Recommended thinner
AMERCOAT T-10 thinner or PPG 91-92 thinner

Volume of thinner
0 – 5%

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PRODUCT DATA SHEET May 1, 2018 (Revision of October 26, 2016)

AMERCOAT® 235

Cleaning solvent
THINNER 90-58 (AMERCOAT 12)

ADDITIONAL DATA

Overcoating interval for DFT up to 5.0 mils (125 µm)

Overcoating with... Interval 20°F (-7°C) 32°F (0°C) 50°F (10°C) 70°F (21°C) 90°F (32°C)

itself Minimum 28 hours 16 hours 8 hours 4 hours 2 hours

Maximum 3 months 3 months 1.5 months 30 days 15 days
polyurethane topcoat Minimum 28 hours 16 hours 8 hours 4 hours 2 hours
Maximum 14 days 10 days 7 days 5 days 4 days
PSX 700 Minimum 28 hours 16 hours 8 hours 4 hours 2 hours
Maximum 30 days 30 days 21 days 14 days 8 days

Notes:
- Antifouling coatings should be applied when the previous coat of epoxy is tack free, but impressionable with moderate finger tip
pressure
- Alkyd coatings and waterborne acrylic coatings should be applied after the film is dry to handle and not greater than three times dry to
handle time
- Dry times are dependent on air and surface temperatures as well as film thickness, ventilation, and relative humidity. Maximum
recoating time is highly dependent upon actual surface temperatures – not simply air temperatures. Surface temperatures should be
monitored, especially with sun-exposed or otherwise heated surfaces. Higher surface temperatures shorten the maximum recoat
window
- Surface must be clean and dry. Any contamination must be identified and removed. A detergent wash with PREP 88 or equivalent is
required prior to application of topcoats after 30 days of exposure. However, particular attention must be paid to surfaces exposed to
sunlight where chalking may be present. In those situations, a further degree of cleaning may be required. PPG Technical Service can
advise on suitable cleaning methods. If maximum recoat/topcoat time is exceeded, then roughen surface.

Curing time for DFT up to 5.0 mils (125 µm )

Substrate temperature Dry to touch Dry to handle Service- water

immersion
20°F (-7°C) 28 hours 62 hours 14 days
32°F (0°C) 20 hours 45 hours 10 days
50°F (10°C) 10 hours 22 hours 7 days
70°F (21°C) 5 hours 10 hours 5 days
90°F (32°C) 3 hours 5 hours 4 days

Note: On underwater hull systems, the vessel can be launched after the specified dry-to-launch period indicated in the
application instructions for the antifouling

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PRODUCT DATA SHEET May 1, 2018 (Revision of October 26, 2016)

AMERCOAT® 235

Pot life (at application viscosity)

Mixed product temperature Pot life

50°F (10°C) 6 hours

70°F (21°C) 4.5 hours
90°F (32°C) 2 hours

Product Qualifications
• NAVSEA Mil-PRF-23236(D) Class 7, Type V, Grade B and C
• NAVSEA Mil-PRF-24647 underwater hull
• Marintek Class B1 for use in saltwater ballast tanks
• Tested by NOHC as being suitable as a lining for grain storage containers
• Meets USDA criteria for incidental food contact

SAFETY PRECAUTIONS
• For paint and recommended thinners see INFORMATION SHEETS 1430, 1431 and relevant Material Safety Data Sheets
• This is a solvent-borne paint and care should be taken to avoid inhalation of spray mist or vapor, as well as contact
between the wet paint and exposed skin or eyes

WORLDWIDE AVAILABILITY
It is always the aim of PPG Protective and Marine Coatings to supply the same product on a worldwide basis. However, slight
modification of the product is sometimes necessary to comply with local or national rules/circumstances. Under these
circumstances an alternative product data sheet is used.

REFERENCES
• CONVERSION TABLES INFORMATION SHEET 1410
• EXPLANATION TO PRODUCT DATA SHEETS INFORMATION SHEET 1411

WARRANTY
PPG warrants (i) its title to the product, (ii) that the quality of the product conforms to PPG’s specifications for such product in effect at the time of manufacture and (iii) that the product shall be delivered free of the
rightful claim of any third person for infringement of any U.S. patent covering the product. THESE ARE THE ONLY WARRANTIES THAT PPG MAKES AND ALL OTHER EXPRESS OR IMPLIED WARRANTIES, UNDER
STATUTE OR ARISING OTHERWISE IN LAW, FROM A COURSE OF DEALING OR USAGE OF TRADE, INCLUDING WITHOUT LIMITATION, ANY OTHER WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR USE,
ARE DISCLAIMED BY PPG. Any claim under this warranty must be made by Buyer to PPG in writing within five (5) days of Buyer’s discovery of the claimed defect, but in no event later than the expiration of the
applicable shelf life of the product, or one year from the date of the delivery of the product to the Buyer, whichever is earlier. Buyer’s failure to notify PPG of such non-conformance as required herein shall bar
Buyer from recovery under this warranty.

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PRODUCT DATA SHEET May 1, 2018 (Revision of October 26, 2016)

AMERCOAT® 235

LIMITATIONS OF LIABILITY
IN NO EVENT WILL PPG BE LIABLE UNDER ANY THEORY OF RECOVERY (WHETHER BASED ON NEGLIGENCE OF ANY KIND, STRICT LIABILITY OR TORT) FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES IN ANY WAY RELATED TO, ARISING FROM, OR RESULTING FROM ANY USE MADE OF THE PRODUCT. The information in this sheet is intended for guidance only and is based upon
laboratory tests that PPG believes to be reliable. PPG may modify the information contained herein at any time as a result of practical experience and continuous product development. All recommendations or
suggestions relating to the use of the PPG product, whether in technical documentation, or in response to a specific inquiry, or otherwise, are based on data, which to the best of PPG’s knowledge, is reliable. The
product and related information is designed for users having the requisite knowledge and industrial skills in the industry and it is the end-user’s responsibility to determine the suitability of the product for its own
particular use and it shall be deemed that Buyer has done so, as its sole discretion and risk. PPG has no control over either the quality or condition of the substrate, or the many factors affecting the use and
application of the product. Therefore, PPG does not accept any liability arising from any loss, injury or damage resulting from such use or the contents of this information (unless there are written agreements
stating otherwise). Variations in the application environment, changes in procedures of use, or extrapolation of data may cause unsatisfactory results. This sheet supersedes all previous versions and it is the
Buyer’s responsibility to ensure that this information is current prior to using the product. Current sheets for all PPG Protective & Marine Coatings Products are maintained at www.ppgpmc.com. The English text of
this sheet shall prevail over any translation thereof.

Packaging: Available in 1-gallon and 5-gallon kits

Product code Description

at235-1 Buff Base

at235-20 Haze gray base
at235-35 off white base
at235-72 Oxide Red Base
at235-9 Black Base
at235-b Hardener

The PPG logo, and all other PPG marks are property of the PPG group of companies. All other third-party marks are property of their respective owners.

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