PPG SigmaFast 20

UN1263 (Class: 3, Pk Grp: III)
A high build, fast drying corrosion inhibiting primer for structural steel in grey, red and other colours.
Available in 5 and 20 Litres. Tintable to many RAL colours
From £47.02 £39.18
In stock
Only %1 left
Product Description

PPG SigmaFast 20 is a single pack zinc phosphate primer for use as a one-coat, anti-corrosive finish for structural steel.

PPG SigmaFast 20 (formerly Amercoat 4116) is a red oxide single pack, high build, zinc phosphate primer based on a modified alkyd resin. It is a fast drying primer with anti-corrosive properties and is part of the PPG Sigma range, offering toughness and durability with a worldwide reputation.

Best Uses

PPG SigmaFast 20 provides protective finish for structural steelwork, in a single coat. SigmaFast 20 has good anti-corrosive properties and is suitable for use in conditions which are subject to atmospheric exposure.


PPG SigmaFast 20 should be applied air or airless spray, to achieve the best results, but can be applied with a brush or roller to touch up small or damaged areas. Ensure that there is adequate ventilation and stir SigmaFast well, before use. Surfaces must be clean, dry and free from contaminants. After thirty minutes the coating will be touch dry, and it will be re-coatable after approximately 4 hours at 20°C.

Surface and Environment

With excellent anti-corrosive properties, PPG SigmaFast 20 has been specifically designed to provide an attractive finish, whilst protecting a range of surfaces, including steel and iron. SigmaFast 20 can be used for interior and exterior surfaces.

Technical Details


  • High build industrial zinc phosphate primer based on modified alkyd resin
  • Anti-corrosive properties
  • Lead and Chromate free
  • Fast drying
  • Re-coatable with one and two component coatings
  • Xylene based
  • EPA (UK) compliant
  • Single coat protective finish (general structural steelwork in dry internal environments)
  • Tough and durable

Technical Info

Components: One Part
Type: Zinc Phosphate Primer
Finish: Flat
Stock Colours: Red Brown, Grey
Tintable: Yes, upon request. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 382.0g per Litre
Volume Solids: 55%
Suitable Substrates: For steel
Application Method: Brush, Roller, Air Atomised Spray or Airless Spray
Theoretical Coverage: 10.5 m2 per litre at 50 microns
Wet Film Thickness (WFT):  
Dry Film Thickness (DFT): 50 - 75 microns
Induction Time: -
Pot Life: -
Touch Dry: 15 minutes at 20°C
Overcoatable: After 45 minutes at 20°C
Fully Cured:  
Cleaner / Thinner: PPG Thinner 21-06
Shelf Life: At least 24 months when stored cool and dry
Packaging: Available in 5 and 20 Litres

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