Series 322

Tank Armor

Generic Type

Modified Polyamine Epoxy

Common Usage

An advanced generation, solvent-free, high build epoxy lining for the interior of steel storage tanks and vessels from various cargos including non-potable water, crude oil, diesel fuel and other refine petroleum products. Also used to line concrete basins, troughs, and tanks where a coating resistant to chemicals, fuels, and domestic wastewater immersion service is needed. Note: Series 322-1241 can be used with mat to create a reinforced laminate system excellent for use over heavily pitted internal tank bottoms. Contact Tnemec Technical for additional information.

Special Qualifications

Series 322 conforms to API 652 for lining above ground storage tanks and also meets the requirements of EI1541 including Sections 2.1 (DEF STAN 80-97), 2.2, 2.3 and 3.0 for use in aviation fuel storage tanks and piping.

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Theoretical Coverage

1,604 mil sq ft/gal (39.4 m²/L at 25 microns). See APPLICATION for coverage rates. †

Recommended DFT

16.0 to 40.0 mils (400 to 1015 microns) in one or two coats. Note: For steel surfaces with pitting, recommended DFT is 30 to 40 mils (760 to 1015 microns). Note: Depending on the degree of pitting, a prime coat of Series 61 or resurfacing with Series 215 may help alleviate the potential for holidays in the cured film.

Volume Solids

100% (mixed) †




Unthinned: 0.0 lbs/gal solids
Thinned 5%: 0.37 lbs/gal solids

Number of Components

Two: Part A (polyamine) and Part B (epoxy)

Curing Time

Temperature To Touch Dry Through Minimum to Recoat Return to Service Maximum to Recoat
95°F (35°C) 2 1/2 hours 5 1/2 hours 4 hours 48 hours 7 days
75°F (24°C) 7 hours 18 hours 16 hours 48 hours 7 days
50°F (10°C) 24 hours 27 hours 32 hours 7 days 7 days

Note: These cure times are based on 20.0 mil (500 micron) dry film thickness. Cure time varies with surface temperature, air movement, humidity, and film thickness. Ventilation: When used as a tank lining or in enclosed areas, provide adequate ventilation during application and cure.


Self-priming or Series 61, N69F, 161. Note: For surfaces with light to moderate pitting, priming the surface prior to the Series 322 application may help to prevent holidays in the cured film. Note: The following maximum recoat times apply when topcoating with Series 322; Series 61, 14 days; Series N69F and 161, 30 days. If this time limit is exceeded, or if Series N69F or 161 is exterior exposed more than 14 days, the primer must be uniformly scarified prior to topcoating. Note: Series N69F or 161 are for crude oil service only.

Volatile Organic Compounds

Unthinned: 0.10 lbs/gallon (12 grams/litre)
Thinned 5%: 0.44 lbs/gallon (52 grams/litre) †


Series 215. Note: For steel surfaces with isolated, heavy pitting, resurface the area with Series 215 prior to Series 322 application.

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