• Cromadex 306 Quick Air Dry High Build Primer

Cromadex 306 Quick Air Dry High Build Primer


We no longer stock this product, but can recommend International Interprime 306 as a great alternative.

Product not available
This Product has been Discontinued


Use Cromadex 306 Quick Air Dry High Build Primer for a fast production turnaround time, with its quick drying and rapid handling properties, designed for use on blasted and non-blasted steel.

Suitable for spraying, use the primer in mild-to-moderate corrosive environments typically found in commercial buildings, schools, hospitals, etc, with thinning not normally required depending on the application equipment used.

Suitable Substrates and Preparation

All surfaces should be clean, dry and free form surface contamination.

Steel - Degrease with Cromadex 678 Spirit Wipe. Blast clean to remove millscale, minimum surface preparation SA2.

Application Details

Thinning Ratio - Not normally required, dependent on application equipment. 85-72 thinner up to a maximum of 20%

Approved Thickness - 50 – 85 microns DFT 120 – 200 microns WFT

Brush/Roller - Suitable for small areas & touch-up only

Spray Gun Fluid tip size Working pressure
Pressure Pot HVLP 1.0 – 1.6 mm 0.6 bar (max)
Airless 11 -13 thou 2500 psi
Air Assisted Airless 11 -13 thou 2000 psi (10 – 20 psi air assist)

Drying and Overcoating

Substrate Temperature Drying Time (Touch) Drying Time (Through) Overcoating Time (Min.) Overcoating Time (Max)
15°C 30 mins 2.5 hours 10 hours Indefinite
25°C 20 mins 1.5 hours 4 hours Indefinite
40°C 10 mins 1 hours 1 hour Indefinite

306 Primer is overcoatable after the minimum drying time (above) with all itself and  Cromadex 222, 233 & 400 Topcoats ONLY. (for cosmetic purposes only)


9 m²/l @ 50 microns assuming 100% transfer efficiency

VOC Specific Gravity
306 Primer 486 g/l 1.30
85-72 Thinner 867 g/l 0.87
Product Details

Data sheet

Water / Solvent Based
For Use On
Application Method
Pressure Pot, Airless Spray, Air Assisted Airless, brush, roller
Standard / Ready Mixed
Single, Two or Three Pack
Pack Size
5L, 20L
Brush, Roller, Spray
Touch Dry
30 mins
UN Number

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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