ASTM E350-18

ASTM E350-18 Standard Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron

standard by ASTM International, 03/15/2018

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1.1These test methods cover the chemical analysis of carbon steels, low-alloy steels, silicon electrical steels, ingot iron, and wrought iron having chemical compositions within the following limits:

Element	Composition Range,%
Aluminum	0.001 to 1.50
Antimony	0.002 to 0.03
Arsenic	0.0005 to 0.10
Bismuth	0.005 to 0.50
Boron	0.0005 to 0.02
Calcium	0.0005 to 0.01
Cerium	0.005 to 0.50
Chromium	0.005 to 3.99
Cobalt	0.01 to 0.30
Columbium (Niobium)	0.002 to 0.20
Copper	0.005 to 1.50
Lanthanum	0.001 to 0.30
Lead	0.001 to 0.50
Manganese	0.01 to 2.50
Molybdenum	0.002 to 1.50
Nickel	0.005 to 5.00
Nitrogen	0.0005 to 0.04
Oxygen	0.0001 to 0.03
Phosphorus	0.001 to 0.25
Selenium	0.001 to 0.50
Silicon	0.001 to 5.00
Sulfur	0.001 to 0.60
Tin	0.002 to 0.10
Titanium	0.002 to 0.60
Tungsten	0.005 to 0.10
Vanadium	0.005 to 0.50
Zirconium	0.005 to 0.15

1.2The test methods in this standard are contained in the sections indicated as follows:

	Sections

Aluminum, Total, by the 8-Quinolinol Gravimetric Method (0.20% to 1.5%)	124-131
Aluminum, Total, by the 8-Quinolinol Spectrophotometric Method (0.003% to 0.20%)	76-86
Aluminum, Total or Acid-Soluble, by the Atomic AbsorptionSpectrometry Method (0.005% to 0.20%)	308-317
Antimony by the Brilliant Green Spectrophotometric Method (0.0002% to 0.030%)	142-151
Bismuth by the Atomic Absorption Spectrometry Method (0.02% to 0.25%)	298-307
Boron by the Distillation-Curcumin Spectrophotometric Method (0.0003% to 0.006%)	208-219
Calcium by the Direct-Current Plasma Atomic Emission Spectrometry Method (0.0005% to 0.010%)	289-297
Carbon, Total, by the Combustion Gravimetric Method (0.05% to 1.80%)-Discontinued 1995
Cerium and Lanthanum by the Direct Current Plasma Atomic Emission Spectrometry Method (0.003% to 0.50% Cerium, 0.001% to 0.30% Lanthanum)	249-257
Chromium by the Atomic Absorption Spectrometry Method (0.006% to 1.00%)	220-229
Chromium by the Peroxydisulfate Oxidation-Titration Method (0.05% to 3.99%)	230-238
Cobalt by the Nitroso-R Salt Spectrophotometric Method (0.01% to 0.30%)	53-62
Copper by the Sulfide Precipitation-Iodometric Titration Method (Discontinued 1989)	87-94
Copper by the Atomic Absorption Spectrometry Method (0.004% to 0.5%)	279-288
Copper by the Neocuproine Spectrophotometric Method (0.005% to 1.50%)	114-123
Lead by the Ion-Exchange-Atomic Absorption Spectrometry Method (0.001% to 0.50%)	132-141
Manganese by the Atomic Absorption Spectrometry Method (0.005% to 2.0%)	269-278
Manganese by the Metaperiodate Spectrophotometric Method (0.01% to 2.5%)	9-18
Manganese by the Peroxydisulfate-Arsenite Titrimetric Method (0.10% to 2.50%)	164-171
Molybdenum by the Thiocyanate Spectrophotometric Method (0.01% to 1.50%)	152-163
Nickel by the Atomic Absorption Spectrometry Method (0.003% to 0.5%)	318-327
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
Nitrogen by the Distillation-Spectrophotometric Method (Discontinued 1988)	63-75
Phosphorus by the Alkalimetric Method (0.02% to 0.25%)	172-179
Phosphorus by the Molybdenum Blue Spectrophotometric Method (0.003% to 0.09%)	19-30
Silicon by the Molybdenum Blue Spectrophotometric Method (0.01% to 0.06%)	103-113
Silicon by the Gravimetric Titration Method (0.05% to 3.5%)	46-52
Sulfur by the Gravimetric Method (Discontinued 1988)	31-36
Sulfur by the Combustion-Iodate Titration Method (0.005% to 0.3%) (Discontinued 2017)	37-45
Tin by the Sulfide Precipitation-Iodometric Titration Method (0.01% to 0.1%)	95-102
Tin by the Solvent Extraction-Atomic Absorption Spectrometry Method (0.002% to 0.10%)	198-207
Titanium by the Diantipyrylmethane Spectrophotometric Method (0.025% to 0.30%)	258-268
Vanadium by the Atomic Absorption Spectrometry Method (0.006% to 0.15%)	239-248

1.3Test methods for the determination of several elements not included in this standard can be found in Test Methods E1019.

1.4Some of the composition ranges given in 1.1 are too broad to be covered by a single test method and therefore this standard contains multiple test methods for some elements. The user must select the proper test method by matching the information given in the Scope and Interference sections of each test method with the composition of the alloy to be analyzed.

1.5The values stated in SI units are to be regarded as standard. In some cases, exceptions allowed in IEEE/ASTM SI 10 are also used.

1.6This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 6 and in special Warning paragraphs throughout these test methods.

1.7This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.