ASTM E363 : 23

Standard Test Methods for Chemical Analysis of Chromium and Ferrochromium

Standard Details

1.1 These test methods cover the chemical analysis of chromium and ferrochromium having chemical compositions within the following limits:

	Element	Composition, %
	Aluminum	0.25 max
	Antimony	0.005 max
	Arsenic	0.005 max
	Bismuth	0.005 max
	Boron	0.005 max
	Carbon	9.00 max
	Chromium	51.0 to 99.5
	Cobalt	0.10 max
	Columbium	0.05 max
	Copper	0.05 max
	Lead	0.005 max
	Manganese	0.75 max
	Molybdenum	0.05 max
	Nickel	0.50 max
	Nitrogen	6.00 max
	Phosphorus	0.03 max
	Silicon	12.00 max
	Silver	0.005 max
	Sulfur	0.07 max
	Tantalum	0.05 max
	Tin	0.005 max
	Titanium	0.50 max
	Vanadium	0.50 max
	Zinc	0.005 max
	Zirconium	0.05 max

1.2 The analytical procedures appear in the following order:

	Sections
Arsenic by the Molybdenum Blue Spectrophotometric Test Method [0.001 % to 0.005 %]	10 – 20
Lead by the Dithizone Spectrophotometric Test Method [0.001 % to 0.05 %]	21 – 31
Chromium by the Sodium Peroxide Fusion-Titrimetric Test Method [50.0 % to 99.5 %]	32 – 38

1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 6 and in special “Warning” paragraphs throughout these test methods.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International StandardDetails, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.