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SSPC Updates 2 Standards

Tuesday, April 28, 2015

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PITTSBURGH—SSPC committees have announced updates to two standards: one for surface preparation and one for polyurea topcoats.

SSPC-SP 1

SSPC-SP 1, "Solvent Cleaning," is used to specify removal of visible deposits of oil, grease and other soluble contaminants from metal surfaces before employing additional mechanical means of surface preparation.

All of SSPC's surface-preparation standards require solvent cleaning to SP 1 before performing additional cleaning required by the project specification.

SSPC Standards
©iStock.com / fullvalue

SSPC revised SSPC-SP 1, "Solvent Cleaning," and SSPC Paint 39, "Two-Component, Weatherable Aliphatic Polyurea Topcoat, Fast or Moderate Drying, Performance-Based," standards.

Revisions include:

  • Expansion of the scope to "metallic substrates" (the 1985 version limited use to steel);
  • New definitions of "visible" and "solvent";
  • Clarification that heavy deposits of oil, grease and other contaminants are best removed by scraping before solvent cleaning;
  • Deleteion of the inspection section, which is usually addressed in procurement documents; and
  • Addition of non-mandatory notes with description of additional verification methods that may be specified to confirm higher levels of contaminant removal than SP 1 requires.

SSPC Paint 39

SSPC Paint 39, "Two-Component, Weatherable Aliphatic Polyurea Topcoat, Fast or Moderate Drying, Performance-Based," can be used to establish minimum performance requirements for a thin-film aliphatic polyurea topcoat that can be used over compatible corrosion-prevention primers or intermediate coats to protect from ultraviolet light.

Because Paint 39 is a topcoat standard, performance requirements focus on color and gloss retention and physical film properties.

Revisions include:

  • Addition of a third level of natural weathering requirements, and
  • Reorganization of the standard to parallel other standards recently revised by the Polyurethane Coatings Committee.

The standards can be downloaded from PaintSquare or the SSPC Marketplace.

   

Tagged categories: Coating Materials; North America; Polyurea; Solvents; SSPC; Surface preparation

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