International Interzinc 52

Part A: UN1263 (Class: 3, Pk Grp: III), Part B: UN3469 (Class: 3.8, Pk Grp: III)
A two component, anti-corrosive metallic zinc rich epoxy primer.
Available in 10 Litres
From £340.96 £284.13
In stock
Only %1 left
Product Description

International Interzinc 52 is a two component, anti-corrosive metallic zinc rich epoxy primer which complies with the composition and performance requirements of SSPC Paint 20.

Please note this product is made to order and delivery can take up to 10 working days. If you require this sooner, please speak to our Technical Team to discuss possible alternatives.

Best Uses

International Interzinc 52 is formulated as a high performance primer to give maximum protection as part of any anti-corrosive coating system for aggressive environments including those found on offshore structures, petrochemical facilities, pulp and paper plants, bridges and power plants. Interzinc 52 has been designed to provide excellent corrosion resistance in both maintenance and new construction situations.


All surfaces to be coated should be clean, dry and free from contamination. Prior to paint application all surfaces should be assessed and treated in accordance with ISO 8504:2000. Oil or grease should be removed in accordance with SSPC-SP1 solvent cleaning.

Abrasive Blast Cleaning
Abrasive blast clean to Sa2½ (ISO 8501-1:2007) or SSPC-SP6. If oxidation has occurred between blasting and application of Interzinc 52, the surface should be reblasted to the specified visual standard. Surface defects revealed by the blast cleaning process should be ground, filled, or treated in the appropriate manner.
A surface profile of 40-75 microns (1.6-3.0 mils) is recommended.

Shop Primed Steelwork
Interzinc 52 is suitable for application to unweathered steelwork freshly coated with zinc silicate shop primers. If the zinc shop primer shows extensive or widely scattered breakdown, or excessive zinc corrosion products, overall sweep blasting will be necessary. Other types of shop primer are not suitable for overcoating and will require complete removal by abrasive blast cleaning. Weld seams and damaged areas should be cleaned to a minimum St3 (ISO 8501-1:2007) or SSPC-SP3.
Optimum performance will be achieved with blasting to Sa2½ (ISO 8501-1:2007) or SSPC-SP6; where this is not practical, power tool preparation to SSPC-SP11 is recommended.

Apply using airless or air spray or brush for small areas only.

Technical Details


  • Highways Agency Approved - Item No. 109
  • Network Rail New Works System Approved - Protective Treatment Ref N4. Certificate Ref: XN90/N4-108
  • Network Rail Maintenance System Approved - Protective Treatment Ref M20. Certificate Ref: XM92/M20-199
  • Norsok M-501 System 1 (Pre Qualified)
  • Norsok M-501 System 5A (Pre Qualified)
  • Norsok M-501 System 8A


Interzinc 52 is designed for application to correctly prepared steel. However, it is also possible to apply over approved prefabrication primers. Further details of these can be obtained from our technical team.

Recommended topcoats are:

Technical Info

Components: Two Part
Type: Metallic zinc rich epoxy
Finish: Matt
Stock Colours: Blue, Grey and Green
Tintable: No
VOC Content: 152.0g per Litre
Volume Solids: 59%
Suitable Substrates: For metal surfaces
Application Method: Brush or Airless Spray
Theoretical Coverage: 7.87 m2 per litre at 75 microns
Wet Film Thickness (WFT): 85 - 127 microns
Dry Film Thickness (DFT): 50 - 75 microns
Induction Time: -
Pot Life: 12 hours at 15°C
Touch Dry: 90 minutes at 15°C
Overcoatable: After 4 hours at 15°C
Hard Dry: 6 hours at 15°C
Cleaner / Thinner: Thinner not normally required but if needed use International GTA220 (or International GTA415). Clean up with International GTA822 (or International GTA415)
Shelf Life: 12 months minimum at 25°C (77°F). Subject to re-inspection thereafter. Store in dry, shaded conditions away from sources of heat and ignition.
Packaging: Available in 10 Litres

Related Products