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ASTM E363-09

Standard Test Methods for Chemical Analysis of Chromium and Ferrochromium

Automaticky přeložený název:

Standardní Zkušební metody pro chemickou analýzu Chromium a ferochrom

NORMA vydána dne 1.10.2009

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Dostupnost	SKLADEM
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Informace o normě:

Označení normy: ASTM E363-09
Poznámka: NEPLATNÁ
Datum vydání normy: 1.10.2009
Kód zboží: NS-46551
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Kategorie - podobné normy:

Chemická analýza kovů

Anotace textu normy ASTM E363-09 :

Keywords:

arsenic, chemical analysis, chromium, ferrochromium, lead, Chemical analysis--metals/alloys, Chromium, Chromium content--metals/alloys, Ferroalloys, Ferrochromium, ICS Number Code 77.040.30 (Chemical analysis of metals)

Doplňující informace

Significance and Use

These test methods for the chemical analysis of metals and alloys are primarily intended to test such materials for compliance with compositional specifications such as Specification A101 and A481. It is assumed that all who use these test methods will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory.

1. Scope

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

	Element	Concentration, %
	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 Photometric Test Method [0.001 % to 0.005 %]	10-20
Lead by the Dithizone Photometric Test Method [0.001 % to 0.05 %]	21-31
Chromium by the Sodium Peroxide Fusion-Titrimetric Test Method [50 % to 75 %]	32-38

1.3 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 whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 6.

10.1 This test method covers the determination of arsenic in chromium and ferrochromium in concentrations from 0.001 % to 0.005 %.

21.1 This test method covers the determination of lead in chromium and ferrochromium in concentrations from 0.001 % to 0.05 %.

32.1 This test method covers the determination of chromium in all carbon grades of ferrochromium in concentrations from 50 % to 75 %.

2. Referenced Documents

A101-04(2019)	Standard Specification for Ferrochromium
E1601-19	Standard Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method
E135-23a	Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials (Includes all amendments and changes 7/17/2023).
E60-11(2022)e1	Standard Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry (Includes all amendments and changes 6/29/2022).
E50-17	Standard Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
E32-21	Standard Practices for Sampling Ferroalloys and Steel Additives for Determination of Chemical Composition
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
A481-05(2020)	Standard Specification for Chromium Metal
E173-93	Practice for Conducting Interlaboratory Studies of Methods for Chemical Analysis of Metals (Withdrawn 1997)