Work Item
ASTM WK86217

Revision of D6656-16(2021) Standard Test Method for Determination of Chromic Oxide in Wet Blue (Perchloric Acid Oxidation)


Add text to clarify reason for the use of phosphoric acid in the method. Add data to support non-use of phosphoric acid when iron content is not considered sufficient to interfere. Add optional steps that allow use of reduced sample size and chemicals to obtain equivalent results.
Clarify that a result is the average of two determinations.


Developed by Subcommittee: D31.02

Committee: D31

Staff Manager: David Lee

Work Item Status

Date Initiated: 05-03-2023

Technical Contact: Okey Abara

Item: 000