ASTM G87 is the ASTM standard focused on the Standard Practice for Conducting Moist SO2 Tests, giving users a consistent framework for exposure-based evaluation. It is commonly used when a controlled sulfur dioxide environment is needed to assess how materials or finished products respond to corrosive conditions. By standardizing the test approach, this document helps support more reliable comparisons, better quality decisions, and clearer technical communication between buyers, labs, and manufacturers.

Purpose of ASTM G87

The purpose of ASTM G87 is to describe a practical, repeatable practice for conducting moist SO2 testing under defined conditions. As an ASTM standard, it provides a common technical reference for laboratories and product teams that need to evaluate performance in a sulfur dioxide atmosphere with moisture present. This helps reduce variation in testing and supports more consistent results when comparing materials, components, or protective systems that may be sensitive to corrosive exposure.

Common use cases of ASTM G87

ASTM G87 is typically used in laboratory and quality control settings where moist sulfur dioxide exposure testing is part of product assessment or material qualification. It may be applied to coatings, metals, assembled parts, or other items that need screening for resistance to corrosive gas environments. The practice is also useful in procurement and specification work when a defined test method is needed to compare supplier claims or verify performance against internal requirements.

Why ASTM G87 matters

ASTM G87 matters because controlled test practices help create more dependable results in corrosion-related evaluation. For organizations that rely on testing data, the standard supports consistency, repeatability, and clearer acceptance decisions. It can also reduce risk by providing a recognized method for documenting how a product behaves under moist SO2 exposure. In technical purchasing, engineering review, and quality control, ASTM G87 helps align expectations and improves confidence in test-based comparisons.

• Moist SO2 exposure testing
• Repeatable laboratory practice
• Material and product evaluation
• Quality control and comparison
• Corrosion-related performance screening