ASTM E367 - 09

    Standard Test Methods for Chemical Analysis of Ferroniobium

    Active Standard ASTM E367 | Developed by Subcommittee: E01.01

    Book of Standards Volume: 03.05


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    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.

    1. Scope

    1.1 These test methods cover the chemical analysis of ferroniobium having chemical compositions within the following limits:

    ElementConcentration, %
    Aluminum2.00 max
    Carbon0.30 max
    Chromium2.00 max
    Cobalt0.25 max
    Lead0.01 max
    Manganese3.00 max
    Niobium40.00 to 75.00
    Phosphorus0.05 max
    Silicon4.00 max
    Sulfur0.03 max
    Tantalum7.00 max
    Tin0.15 max
    Titanium5.00 max
    Tungsten0.50 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A550 Specification for Ferrocolumbium

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E32 Practices for Sampling Ferroalloys and Steel Additives for Determination of Chemical Composition

    E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials

    E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry

    E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials

    E173 Practice for Conducting Interlaboratory Studies of Methods for Chemical Analysis of Metals

    E1601 Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method


    ICS Code

    ICS Number Code 77.040.30 (Chemical analysis of metals)

    UNSPSC Code

    UNSPSC Code 11101712(Ferrous alloy)


    DOI: 10.1520/E0367-09

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