British Standards Document
BS EN ISO 3651-1
Determination of resistance to intergranular corrosion of stainless steels. Austenitic and ferritic-austenitic (duplex) stainless steels. Corrosion test in nitric acid medium by measurement of loss in mass (Huey test)

https://doi.org/10.3403/01427633U

BS EN ISO 3651-1 is maintained by ISE/1. The current release of this standard is:

BS EN ISO 3651-1:1998 Determination of resistance to intergranular corrosion of stainless steels. Austenitic and ferritic-austenitic (duplex) stainless steels. Corrosion test in nitric acid medium by measurement of loss in mass (Huey test)

https://doi.org/10.3403/01427633 (published 15/07/1998)

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Other historical versions of this standard document also exist: