Series FC20HS


This product has been discontinued. Please contact your local sales representative for further assistance.

Generic Type

Polyamide Epoxy

Common Usage

A high-solids, lower VOC version of Tnemec’s proven polyamide epoxy technology for steel and concrete substrates. Fast-cure properties are ideal for shop and low temperature application. Certified for use on potable water tanks, pipes, and valves.

Special Qualifications

Certified by NSF International in accordance with NSF/ANSI Std. 61. Seven day ambient air cured Series FC20HS is qualified for interior use on tanks and reservoirs of 300 gallons (1,135 L) capacity or greater, pipes 18 inches (46 cm) in diameter or greater, valves 3.5 inches (9 cm) in diameter or greater, fittings 1 inch (3 cm) in diameter or greater and pumps 3.5 inches (9 cm) or greater. Reference Tnemec’s certified product listing at for details on the maximum allowable DFT.

Conforms to AWWA D102 Inside Systems No. 1 and No. 2. Conforms to AWWA C210. Contact your Tnemec representative for systems and additional information.

Theoretical Coverage

1,248 mil sq ft/gal (30.7 m²/L at 25 microns). See APPLICATION for coverage rates. †



Number of Components

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

Curing Time

Temperature To Touch To Handle To Recoat Immersion†
75°F (24°C) 1 hour 6 hours 7-8 hours 5 days
65°F (18°C) 2 hours 6-8 hours 8-10 hours 7 days
55°F (13°C) 3 hours 10-12 hours 14-16 hours 9 days
45°F (7°C) 5 hours 18-20 hours 22-24 hours 10 days
35°F (2°C) 6 hours 30 hours 36-40 hours 16 days

† For water immersion only. Chemical storage will require additional cure time. Curing 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.


Interior: Series FC20, FC20HS, 22, FC22, L140, L140F, N140, N140F, V140, V140F, 264, 265, 406
Exterior: Series FC20, FC20HS, L69, L69F, N69, N69F, 72, 73, 113, 114, L140, L140F, N140, N140F, V140, V140F, 264, 265, 406, 700, V700, 701, V701, 740, 750, 1074, 1074U, 1075, 1075U, 1095.
Refer to COLORS on applicable topcoat data sheets for additional information. Note: When topcoating Series FC20HS, the following recoat times apply: with Series 264 or 265, 7 days; with Series 406, 740 or 750, 14 days; with Series 1095, 30 days; with itself, Series FC20, L69, L69F, N69, N69F, 113, 114, L140, L140F, N140, N140F, V140, V140F, 700, V700, 701 and V701, 60 days; with Series 72, 73, 1074, 1074U, 1075 and 1075U, 90 days. Scarify the Series FC20HS surface before topcoating if maximum recoat time has elapsed.

Volatile Organic Compounds

Unthinned: 1.53 lbs/gal (184 grams/litre)
Thinned 10% (No. 4 Thinner): 2.02 lbs/gal (242 grams/litre) †


Steel: Self-priming or Series 1, 20, FC20, 20HS, 91-H₂O, 94-H₂O, L140, L140F, N140, N140F, V140, V140F
Concrete: Self-priming or Series 20, 20HS

Volume Solids

78% ± 2.0% (mixed)†

Recommended DFT

2.0 to 10.0 mils (50 to 254 microns) per coat.
Note: Number of coats and thickness requirements will vary with substrate, application method and exposure. Contact your Tnemec representative.


Unthinned: 1.15 lbs/gal solids
Thinned 10% (No. 4 Thinner): 1.87 lbs/gal solids


Series 215, 217, 218


1211 Red, 1255 Beige, 00WH Tnemec White, 15BL Tank White, 35GR Black, 39BL Delft Blue. Note: Epoxies chalk with extended exposure to sunlight and may yellow on aging. Lack of ventilation, incomplete mixing, miscatalyzation or the use of heaters that emit carbon dioxide and carbon monoxide during application and initial stages of curing may accelerate any potential yellowing.

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