ASTM E350-12 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron

ASTM E350-12 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron

The standard test methods for the chemical analysis of carbon steel, low-alloy steel, silicon electrical steel, ingot iron, and wrought iron are described under ASTM E350-12 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.


    ASTM E350-12 standard method covers test methods for chemical analysis of metals and alloys having chemical compositions within defined limits. The test methods contained in this standard are as follows:

    Test MethodsSections
    Manganese by the Metaperiodate Spectrophotometric Method(0.01% to 2.5%)9-18
    Phosphorus by the Molybdenum Blue Spectrophotometric Method (0.003% to 0.09%)19-30
    Sulfur by the Combustion-Iodate Titration Method(0.005% to 0.3%)37-45
    Silicon by the Gravimetric Titration Method(0.05% to 3.5%)46-52
    Cobalt by the Nitroso-R Salt Spectrophotometric Method(0.01% to 0.30%)53-62
    Aluminium, Total, by the 8-Quinolinol Spectrophotometric Method (0.003% to 0.20%)76-86
    Tin by the Sulfide-Iodometric Titration Method(0.01% to 0.1%)95-102
    Silicon by the Molybdenum Blue Spectrophotometric Method(0.01% to 0.06%)103-113
    Copper by the Neocuproine Spectrophotometric Method(0.005% to 1.50%)114-123
    Aluminium, Total, by the 8-Quinolinol Gravimetric Method(0.20% to 1.5%)124-131
    Lead by the Ion-Exchange—Atomic Absorption Spectrometry Method (0.001% to 0.50%)132-141
    Antimony by the Brilliant Green Spectrophotometric Method(0.0002% to 0.030%)142-151
    Molybdenum by the Thiocyanate Spectrophotometric Method(0.01% to 1.50%)152-163
    Manganese by the Peroxydisulfate-Arsenite Titrimetric Method(0.10% to 2.50%)164-171
    Phosphorus by the Alkalimetric Method(0.02% to 0.25%)172-179
    Nickel by the Dimethylglyoxime Gravimetric Method(0.1% to 5.00%)180-187
    Nickel by the Ion-Exchange-Atomic-Absorption Spectrometry Method (0.005% to 1.00%)188-197
    Tin by the Solvent Extraction-Atomic Absorption Spectrometry Method(0.002% to 0.10%)198-207
    Boron by the Distillation-Curcumin Spectrophotometric Method(0.0003% to 0.006%)208-219
    Chromium by the Atomic Absorption SpectrometryMethod (0.006 % to 1.00 %)220-229
    Chromium by the Peroxydisulfate Oxidation-Titration Method(0.05% to 3.99%)230-238
    Vanadium by the Atomic Absorption Spectrometry Method(0.006% to 0.15%)239-248
    Atomic Emission Spectrometry Method(0.003 % to 0.50 % Cerium, 0.001 % to 0.30 % Lanthanum)249-257
    Titanium, Total, by the Diantipyrylmethane Spectrophotometric Method (0.025% to 0.30%)258-268
    Manganese by the Atomic Absorption Spectrometry Method(0.005% to 2.0%)269-278
    Copper by the Atomic Absorption Spectrometry Method(0.004% to 0.5%)279-288
    Calcium by the Direct-Current Argon Plasma Atomic Emission Spectroscopy Method (0.0005 % to 0.010 %)289-297
    Bismuth by the Atomic Absorption Spectrometry Method(0.02% to 0.25%)298-307
    Aluminium, Total or Acid-Soluble, by the Atomic AbsorptionSpectrometry Method (0.005% to 0.20%)308-317
    Nickel by the Atomic Absorption Spectrometry Method(0.003% to 0.5%)318-327


    Method-1 uses spectrophotometric technique for determining the manganese content in metals and alloys. In this method, manganous ions are oxidized to permanganate ions by reaction with metaperiodate ions. Solutions of the samples are fumed with perchloric acid so that the effect of metaperiodate ion is limited to the oxidation of manganese. Spectrophotometric measurement is made at approximately 545 nm. The results obtained are as follows:

    Test MaterialPercent Manganese
    Alloy steel (BCS 252, 0.016 Mn)0.022
    Alloy steel (BCS 255/1 0.16 Mn)0.161
    Low-alloy steel (NIST 72f, 0.545 Mn)0.551
    Low-alloy steel (NIST 139a, 0.780 Mn)0.780
    Alloy steel (NIST, 159, 0.807 Mn)0.819
    Carbon steel (NIST 13f, 0.889 Mn)0.892
    Low-alloy steel (NIST 100b, 1.89 Mn)1.91


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