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Corrosion Protection

Protective and Rugged:
Leonton's Corrosion Protection Product Series

Corrosive substances are everywhere. Corrosion threats are either conceivable or not easily perceived. To prolong the product's lifespan, it is necessary to give electronic devices adequate protection. Take corrosion protection for instance, if the field equipments are not corrosion proof, they will be vulnerable to the harsh environmental conditions, accelerating the depreciation of the devices. In order to improve corrosive tolerance of electronic devices and even prevent them from corrosion, Leonton Technologies provides Corrosion Protection Product series to reduce end-users’ replacement costs by greatly alleviating the deterioration that corrosion-causing conditions bring in severe industrial environments.

Corrosive Environments

In the following corrosive environments, marine and industrial environments, including geothermal fields, chemical plants and power plants are usually full of corrosive substances, such as fine particles of sea mist, sulfur compounds and various forms of chloride. In these kinds of environments, once the electronic devices are exposed to the corrosive atmosphere, their lifespan is easily jeopardized due to chemical reactions triggered by these substances. Generally, when field equipments have been operating in ambient air for a long time, moisture and oxygen trigger the corrosion on the metal surfaces of the machine. Furthermore, in industrial environments, it is inevitable that sulfur dioxide from burning fossil fuels, dust particles as sulfurous acid or chloride exist. These substances accelerate the corrosion process. Although it is hard to classify the corrosive environments, some organizations, including ISA (International Society of Automation) and ISO (International Organization for Standardization) have standards, such as ISA Standard 71.04 and ISO 9223, that gauge the corrosive potential of an environment.

ISA Standard 71.04

Corrosion severity level of the environment is classified by 4 different species of airborne contaminants, including liquids, solids, gases, and biological influences.

ISO 9223

ISO 9223

The corrosivity of an atmosphere is classified based on measurements of time of wetness, and pollution categories (sulfur dioxide, and airborne chlorides). With the references below, manufacturers and users can determine what kind of environments is categorized as corrosive. In marine environments, for example, airborne salt crystals can aggravate corrosion on the surface of vessel. As a consequence, loss, contamination of product, high maintenance cost and considerable of redesign ensue from corrosion. Eventually, it will result in malfunction and danger and will even hinder technology progress.

ISO 9223



Leonton spares no effort to meet the Ingress Protection (IP) and conformal coating standards for corrosion protection against corrosive environments. Furthermore, its products also go through salt spray and gas corrosion tests and are compliant with different testing standards to assure the quality of its corrosion protection products.


  • Salt Spray Test: IEC 60068-2-11, IEC 60068-2-52
  • Gas Corrosion Test: IEC 60068-2-60
  • Conformal Coating: MIL‐I‐46058C, IPC-CC-830B, IEC 61086-2 (Class 2), UL 94(V-0), UL 746E
  • Corrosive environment: ANSI/ISA-71.04 (G3-Harsh, GX-Severe), ISO 9223 (C5-Very High, CX-Extreme)


For more corrosion protection product details, please contact us.

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