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Technical Information

The selection of appropriate temperature resistant coatings is influenced by a number of different factors. These must be fully assessed and understood prior to coating specification in order to maximize coating performance and longevity.

Temperature Resistant Coatings Technologies

Many of the characteristics of a temperature resistant coating will be dictated by the resin technology upon which it is based. Common high temperature resin technologies include Epoxy Phenolics, Silicone Acrylics, Aluminium Silicones as well as International Paint's own Titanium Modified Inorganic Copolymers.

The Function of a Temperature Resistant Coating

Elevated temperature operation of piping, vessels and equipment can create extremely aggressive corrosive environments.

The function of a temperature resistant coating is to provide protection to the underlying steelwork without having its performance compromised when exposed to extreme high temperatures.

Considerations When Selecting a Coating

  • Will temperatures be cyclic or constant?

  • Many processes follow a regular temperature cycle over hours, days or weeks, placing significant stress upon a coating. Certain products are specifically developed for use in cyclic conditions and will offer greatly improved performance.

  • Is the equipment insulated or uninsulated?

  • The use of thermal insulation will also have a huge impact upon coating selection and performance expectations. The hot, damp, aggressive environment created beneath insulation, coupled with the difficulty of inspection means that corrosion under insulation (CUI) presents a huge risk to facility owners and operators

  • What is the maximum temperature?

  • All coatings have a maximum temperature limit. If used above this temperature, performance will not be in line with expectations.

Protection of Steel Alloys

Although stainless steel is inherently more corrosion-resistant than carbon steel, in many cases it still needs protection. Stainless steel is susceptible to chloride-induced stress corrosion cracking when exposed to chloride-rich environments such as under insulation or offshore.

Protective coatings can be used to provide a barrier between the stainless steel and the buildup of chlorides.

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