ASTM R0071
Standard Method of Test for Exfoliation Corrosion Susceptibility in 7XXX Series Copper-Containing Aluminum Alloys (Exco Test) (This is not an approved ASTM standard; available as PDF, only)
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About This Item
ASTM R0071 is the Standard Method of Test for Exfoliation Corrosion Susceptibility in 7XXX Series Copper-Containing Aluminum Alloys, commonly referred to as the Exco Test. It provides a focused way to evaluate how these aluminum alloys respond to exfoliation corrosion, which is important when assessing material durability and service performance. This ASTM standard is used as a technical reference for corrosion testing, helping users compare alloy behavior under a consistent method.
Purpose of ASTM R0071
The purpose of ASTM R0071 is to define a standardized test method for checking exfoliation corrosion susceptibility in 7XXX series copper-containing aluminum alloys. By using a common procedure, the standard supports more consistent evaluation of alloy performance and helps reduce variation in corrosion testing results. As an ASTM test method, it is intended to guide technical assessment of material behavior in a controlled way, making it useful for laboratories, manufacturers, and quality programs focused on corrosion resistance.
Common use cases of ASTM R0071
ASTM R0071 is commonly used when evaluating aluminum alloys that fall within the 7XXX series and contain copper, especially where exfoliation corrosion performance is a concern. It may be applied in laboratory testing, materials qualification, incoming inspection, or product development workflows where corrosion susceptibility needs to be measured in a repeatable manner. The standard is also relevant for organizations that compare alloy lots, support technical documentation, or verify compliance with corrosion-related requirements.
Why ASTM R0071 matters
ASTM R0071 matters because exfoliation corrosion can affect the reliability and long-term performance of aluminum alloy products. A standardized test method helps organizations make more consistent decisions during material selection, procurement, and quality control. It also supports clearer communication between suppliers, test labs, and end users by providing a shared technical basis for evaluating corrosion susceptibility. For teams working with 7XXX series copper-containing aluminum alloys, this improves risk reduction and product assessment.
- Exfoliation corrosion susceptibility testing
- 7XXX series copper-containing aluminum alloys
- Controlled laboratory evaluation
- Material qualification and quality checks
- Exco Test reference method
- Publication Date: 2015-01-30
- Publisher: ASTM
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