After 2.5 year exposure test, Heresite’s P-413 panels show no signs of wear

in Blog, Chemical Resistance Testing, Coatings, Uncategorized

To further expand on Heresite’s expansive chemical resistance guide, P-413 coated steel, copper, and aluminum panels were placed in a municipal wastewater treatment facility to simulate sewage fumes. Panels were placed at the point where raw sewage is pumped into the facility and screened; this results in significant hydrogen sulfide exposure, one of the harshest […]

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ASTM B-117 vs. ISO 20340/ISO 12944-9 – what’s the difference?

in Blog, Chemical Resistance Testing, Coatings, Uncategorized

ASTM B-117 was the first nationally recognized salt spray standard. Published in 1939, this salt spray test is widespread and often recognized as the “gold standard” in corrosion testing. However, ISO 20340 offers a more realistic and updated method of testing, representing a significant improvement over ASTM B-117. When the ASTM B-117 test is conducted, […]

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Fume exposure chemical testing may not be enough for your HVAC-R equipment

in Chemical Resistance Testing, Coatings

HVAC-R coating chemical resistance is often tested using fume exposure. While this method of testing can provide information on the anticipated level of protection for HVAC-R equipment, in certain applications, spot/direct exposure tests may provide better information about your equipment’s longevity in real-world conditions. It is important to conduct spot/direct exposure chemical resistance tests because […]

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Are you getting the HVAC-R coating you expect?

in Blog, Coatings

For over 80 years, Heresite coatings have been used to protect HVAC-R equipment in the harshest environments. We’re proud of our history, and we’re proud to continue to offer products like P-413, which recently met the demanding offshore marine requirements of ISO 20340.  These are tested, proven, real-world results. Unfortunately, being an early innovator and […]

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Heresite’s New P-413 Becomes First HVAC-R Coil/Radiator Coating to Meet ISO 12944-9 (formerly ISO 20340) Standard

in News

Offshore paint qualification standard approximates real-world environmental conditions Manitowoc, Wis. (June 23, 2017) – Heresite, a leader in the development of thin film corrosion resistant coatings, has successfully met the demanding requirements of ISO 20340 – regarded as a key corrosion standard for performance coating systems destined for offshore structures, the most severe marine/salt air […]

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What you need to know about ISO Corrosivity Categories

in Blog

Corrosion testing on HVAC coatings can be conducted according to a number of standards, including ASTM-B117, ISO 9227, ISO 12944-6, and ISO 20340. Of these tests, the one we believe represents actual service environments most closely is ISO 20340. ISO’s testing standards for protective paint systems were developed through long-term material weight loss and surface […]

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Selecting the right corrosion test for your HVAC/R protective coating

in Blog

There are several tests that can be used to measure the effectiveness of protective coatings for HVAC/R coils. These testing processes have evolved over the years as various organizations have tried to provide the most accurate information to engineers, manufacturers, and businesses that need to protect their HVAC/R investment.   ASTM B-117 Originally developed in […]

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