ASTM G108 is the standard test methods document for Electrochemical Reactivation (EPR) used to detect sensitization in AISI Type 304 and 304L stainless steels. It gives buyers, labs, and quality teams a common technical basis for evaluating these grades when intergranular corrosion concerns are relevant. By focusing on a defined electrochemical test approach, the standard supports more consistent assessment of material condition and helps reduce uncertainty in stainless steel verification.

What is ASTM G108?

ASTM G108, Standard Test Methods for Electrochemical Reactivation (EPR) for Detecting Sensitization of AISI Type 304 and 304L Stainless Steels, is a technical standard centered on a specific electrochemical method for identifying sensitization. In practical terms, it addresses whether these stainless steel grades may have undergone changes that could affect corrosion-related performance. The document is used as a reference for test method consistency, helping users apply the same framework when examining material condition and comparing results across testing programs.

Where is ASTM G108 used?

This standard is commonly used in materials testing and quality control settings where Type 304 and 304L stainless steels must be checked for sensitization. It is relevant in laboratories, inspection workflows, and product qualification programs that rely on electrochemical evaluation. ASTM G108 is also useful when stainless steel parts, components, or test specimens need a documented method for assessing material condition before acceptance, comparison, or further engineering review.

Why is ASTM G108 important?

ASTM G108 matters because sensitization can affect how 304 and 304L stainless steels perform in service, especially when corrosion resistance is a concern. Using a recognized test method helps improve consistency in evaluation, supports compliance and procurement decisions, and gives technical teams a clearer basis for comparing results. It also helps reduce risk by providing a standardized way to screen material condition before release, use, or further processing.

• Electrochemical Reactivation (EPR) method
• Sensitization detection for 304 and 304L stainless steels
• Supports material testing and quality control
• Useful for inspection and acceptance workflows
• Helps standardize corrosion-related evaluation