high temperature paint for steel on industrial pipes

Heat resistant paint Singapore – protect your assets from heat

When a substrate is subject to heat and rapid temperature fluctuations, it can lead to surface breakage and corrosion. Electrical and engine components, chimneys and ovens, pipework and chemical plants, all these are exposed to possibly damaging temperatures and conditions. A high temperature paint (or thermal management coating) work to protect the substrate from variations and extremes of temperature without losing functionality. As well as protecting from heat, high temperature coatings:

  • Protect from corrosion under insulation (CUI): Provides an extra coat of protection between the hot surface and insulation material
  • Reduce thermal fatigue: improves performance of machinery and extend component life
  • Allow for higher operating temperatures: limits thermal exposure and improves efficiency
  • Effective temperature range up to 1000°C: Different formulations provide resistance to temperatures from -196°C to 1000°C
  • Abrasion resistant: Suitable for harsh environments with mechanical abrasion such as vehicle traffic

In this article we outline the different categories of high temperature paint, how to choose the right one for your project, and where to find heat resistant paint products and contractors in Singapore.

Heat protection with 4 types of high temp coating

It is important to note that while high temperature paint does provide some protection from flames, it is not a fire resistant coating. Essentially, heat resistant paint can be divided into four types:

  1. Sprayed metal and metal additive coatings
     These coatings are particularly used for corrosion protection combined with heat resistance. Thermal sprayed aluminium is particularly used for CUI prevention in onshore and offshore platforms and processing plants. Metal pigments are often used as stabilisers for temperatures above 400°C.
  2. Ceramic coating
    The heat resistance properties of ceramic coating are well known, and some of the highest heat coatings available are ceramics. They also provide corrosion protection and chemical resistance and a hard finish. With ceramic high temperature paint insulation and the metal under it can also be protected.
  3. Epoxy-based, silicone-based, multipolymeric paints
    Single or two component, water- or solvent-based, these paints are formulated to provide resistance to high heat when applied at new construction, on-site and as a maintenance coating. Usually the more silicone, the higher the temperature resistance. For medium to high temperature protection. Liquid heat resistant paint has the benefit of being able to be applied to hot substrates without affecting the coating.
  4. Powder coating
     As well as being corrosion resistant, high temperature powder coating has been developed for heat resistance to temperatures ranging from 200°C  to 550°C. The powders are usually epoxy and silicone-based (like the liquid paints), and silicone-based powders perform better at higher heats. These have the benefit of being VOC free and having a wide range of gloss and colour finishes.

These 3 factors define the right heat resistant paint

As with any coating application, understanding the needs of your substrate and the application process is crucial for making the right coating choice. As well as knowing the substrate type, you need to know its environment, its use, the coating time parameters, and the likely ways it will fail. Here are some questions you need to ask before you can choose a high temperature paint:

  1. The maximum substrate temperature
    One of the most common reasons for failure is expecting high temperature coatings to perform outside of the temperature range they were manufactured to tolerate. Each coating type has a specific temperature range, and outside it the functionality and efficacy fails. Make sure not to understate the maximum temperature.
    For example, International Intertherm 50 is recommended for temperatures up to 540°C
  2. Substrate temperature during application
    There are high temperature paint products formulated for hot (up to 300oC) and ambient temperature application. A hot application may be required to avoid needing to shut down operations, spot coating problem areas, and generally not disrupting a facility.
    For example, Jotun Epoxy HR can be applied on substrates up to 150oC
  3. Substrate insulation
    If you are choosing a heat resistant paint to combat CUI, that coating needs to be specially formulated for the purpose. It needs corrosion resistance, but it also needs to be able to be applied to hot substrates and deal with boiling water exposure.
    For example, PPG HI-TEMP 1027 is designed to prevent CUI and can be applied to hot substrates

Prevent Corrosion under insulation (CUI) with high temperature coatings for steel

high temperature coatings for steel under insulation of pipes

High temperature paint for steel under insulation to prevent CUI

Insulating steel structures is very common in industrial environments; it can either minimise heat gain or heat loss, it reduces costs and improves cost efficiency. It can additionally improve staff safety in working environments by insulating hot or cold items which might cause employee injuries. Nonetheless, insulating steel also brings potential risks along in forms of deterioration of the surface under insulation. Corrosion under insulation (CUI) refers to the steel structure eroding under the insulation material.

CUI is almost inevitable under insulation of steel work; the consequences may be disastrous if the corrosion is not discovered on time. Early detection is the best way of fighting against CUI. However, the durability of steel surfaces under insulation can be extended by corrosion resistant high temperature coatings for steel coating. Nonetheless, not any coating is suitable for this purpose; the high temperature coatings must be approved for use under insulation. It additionally must meet the requirements of the temperatures. The CUI coatings are ideal for the extreme environment between the steel structure and insulation material; the area is often subject to extreme temperatures and eventually to water condense.

High temperature paint specialists in Singapore

Heat resistant paint products are used across a wide range of industries, as well as by homeowners and barbecue enthusiasts. As such, a wide range of products and services are available across the country, no matter your project. High temperature coatings should be applied by a trained professional. If you would like more information about heat resistant paints or would like to connect with one of our partners to get a high temperature coating for your project, contact us! Our specialists are here to help, just use the “Request a quote” button below the article and take advantage of our 100% free quote service.

High temperature paint productPrice (RRP)PackagingTheoretical coverageSubstrates
Nippon Paint Pylox Heat Resistant Spray Paint$9.10400cc0.4-1.6m2metal, timber and paper surfaces
RJ London Hi-Temp Spray Paint$7.00400ccmetal surfaces
Rust-Oleum High temperature spray paint$17.8012oz0.6-0.9 m2metal surfaces
Jotun Heat Resistant Aluminium HR Paint$78.295L22.5-25 m2/Lcarbon steel and aluminium substrates
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