ASTM-E367 › Historical Revision Information
Standard Test Methods for Chemical Analysis of Ferroniobium
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Scope
1.1 These test methods cover the chemical analysis of ferroniobium having chemical compositions within the following limits:
| Element | Concentration, % | |
| Aluminum | 2.00 max | |
| Carbon | 0.30 max | |
| Chromium | 2.00 max | |
| Cobalt | 0.25 max | |
| Lead | 0.01 max | |
| Manganese | 3.00 max | |
| Niobium | 40.00 to 75.00 | |
| Phosphorus | 0.05 max | |
| Silicon | 4.00 max | |
| Sulfur | 0.03 max | |
| Tantalum | 7.00 max | |
| Tin | 0.15 max | |
| Titanium | 5.00 max | |
| Tungsten | 0.50 max |
1.2 The test methods appear in the following order:
| Sections | |
| Separation of Niobium, Tantalum, and Titanium by the Ion-Exchange Test Method | 10-16 |
| Titanium by the Photometric Test Method [0.05 % to 5.0 %] | 17-21 |
| Niobium by the Gravimetric Test Method [40 % to 75 %] | 22-23 |
| Tantalum by the Gravimetric Test Method [1 % to 7 %] | 24-25 |
| Tantalum by the Photometric Test Method [0.25 % to 1 %] | 26-30 |
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 precautionary statements are given in Section 6, and specific warning statements in 11.1. 10.1 These test methods cover the determination of niobium, tantalum, and titanium in ferroniobium from 40 % to 75 %, 0.25 % to 7 %, and 0.05 % to 5.0 %, respectively.
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 A550. 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.
Keywords
chemical analysis; ferroniobium; niobium; tantalum; titanium; Chemical analysis--metals/alloys; Columbium content--metals/alloys; Ferroalloys; Ferroniobium; Tantalum (Ta) content--metals/alloys; Titanium content--metals/alloys; ICS Number Code 77.040.30 (Chemical analysis of metals)
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03.05 (Analytical Chemistry for Metals, Ores, and Related Materials: E 32 - latest)
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Document Number
ASTM-E367-09
Revision Level
2009 EDITION
Status
Superseded
Modification Type
Revision with Title Change
Publication Date
Oct. 1, 2009
Document Type
Test Method
Page Count
6 pages
Committee Number
E01.01