ASTM E352-13 Chemical Analysis of Tool Steels

ASTM E352-13 Chemical Analysis of Tool Steels

The standard test methods for the chemical analysis of tool steels and other similar medium and high-alloy steels are covered under the ASTM E352-13 standard test. These test methods for the chemical analysis of metals and alloys are primarily intended as referee methods to test such materials for compliance with compositional specifications.

    Scope:

    ASTM E352-13 standard method covers the test methods for chemical analysis of tool steels and other similar medium and high-alloy steels with specified chemical compositions limits. The test methods in this standard are contained under the sections as follows:

    Test MethodsSections
    Manganese by the Periodate Photometric Method (0.10 to 5.00%)8
    Phosphorus by the Molybdenum Blue Photometric Method (0.002 to 0.05%)18
    Sulfur by the Combustion-Iodate Titration Method (0.005 to 0.4 %)36
    Silicon by the Gravimetric Method (0.10 to 2.50%)45
    Cobalt by the Ion-Exchange—Potentiometric Titration Method (2 to 14%)52
    Cobalt by the Nitroso-R-Salt Photometric Method (0.10 to 5.0%)60
    Copper by the Sulfide Precipitation-Electrodeposition Gravimetric Method (0.01 to 2.0 %)70
    Carbon, Total, by the Combustion Gravimetrical Method (0.05 to 2.50 %)78
    Copper by the Neocuproine Photometric Method (0.01 to 2.00%)89
    Lead by the Ion-Exchange—Atomic Absorption Method (0.001 to 0.001%)99
    Phosphorus by the Alkalimetric Method (0.01 to 0.05%)136
    Nickel by the Dimethylglyoxime Gravimetric Method (0.1 to 4.0%)144
    Tin by the Solvent Extraction—Atomic Absorption Method (0.002 to 0.10%)152
    Molybdenum by the Photometric Method (0.01 to 1.50%)162
    Chromium by the Atomic Absorption Method (0.006 to 1.00%)174
    Chromium by the Peroxydisulfate Oxidation-Titration Method (0.10 to 14.00%)184
    Vanadium by the Atomic Absorption Method (0.006 to 0.15%)193
    Molybdenum by the Ion Exchange–8-Hydroxyquinoline Gravimetric Method203

    Results:

    Chromium is determined by Atomic Absorption Spectrophotometer method. The sample is dissolved in mineral acids and the residue fused, dissolved, and solution combined. The sample solution is aspirated into a nitrous oxide-acetylene flame of an atomic absorption spectrophotometer. Spectral energy at approximately 3579 A° from a chromium hollow-cathode lamp is passed through the flame and the absorbance is measured. The spectrophotometer is calibrated with solutions of known chromium concentrations.

    Test SpecimenPercent Chromium
    No.10.149
    No.20.693
    No.30.961
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