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January 2018 - Heresite Protective Coatings, LLC

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

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

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