ASTM E595

ASTM E595 is the ASTM standard for determining total mass loss and collected volatile condensable materials from outgassing in a vacuum environment. It is used to assess how materials behave when exposed to low-pressure conditions, where released volatiles can affect nearby surfaces and equipment. This makes the standard important for material selection, product evaluation, and quality control when low-outgassing performance matters. The method helps users compare materials in a consistent, technical way.

ASTM E595 standard overview

The ASTM E595 standard provides a test method focused on measuring two key outgassing indicators: total mass loss and collected volatile condensable materials. Its purpose is to give a repeatable way to evaluate how materials release volatile matter under vacuum exposure. This is especially useful when the condition of surrounding components may be affected by condensable residues. As a technical document, it supports comparison, procurement review, and engineering decisions based on standardized test results.

Where is ASTM E595 used?

This standard is commonly used when materials or assemblies may operate in vacuum environments or other low-pressure applications. It is relevant for components, finishes, polymers, adhesives, and other materials that could release volatile substances during service or testing. ASTM E595 is often consulted in material qualification, supplier evaluation, and laboratory workflows where outgassing performance must be documented before use in sensitive systems.

Practical importance of ASTM E595

ASTM E595 matters because outgassing can create contamination risks, reduce performance, or complicate reliability in vacuum-based systems. Using a recognized standard helps improve consistency between test reports and supports clearer procurement and compliance decisions. It also gives engineers and quality teams a common reference for comparing materials and reducing uncertainty during product selection. For organizations working with vacuum-sensitive equipment, the standard can be an important part of risk reduction.

• Total mass loss measurement
• Collected volatile condensable materials
• Vacuum environment testing
• Material comparison and qualification
• Quality and procurement support