ASTM E350-12 - 15.8.2012
 
Significance and Use

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, particularly those under the jurisdiction of ASTM Committees A01 on Steel, Stainless Steel, and Related Alloys and A04 on Iron Castings. 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 under appropriate quality control practices such as those described in Guide E882.

 
1. Scope

1.1 These 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

1.2 The 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 %)

124131

Aluminum, Total, by the 8-Quinolinol Spectrophotometric
Method (0.003 % to 0.20 %)

7686

Aluminum, Total or Acid-Soluble, by the Atomic Absorption
Spectrometry Method (0.005 % to 0.20 %)

308317

Antimony by the Brilliant Green Spectrophotometric
Method (0.0002 % to 0.030 %)

142151

Bismuth by the Atomic Absorption Spectrometry
Method (0.02 % to 0.25 %)

298307

Boron by the Distillation-Curcumin Spectrophotometric
Method (0.0003 % to 0.006 %)

208219

Calcium by the Direct-Current Argon Plasma Atomic
Emission Spectroscopy Method (0.0005 % to 0.010 %)

289297

Carbon, Total, by the Combustion Gravimetric Method
(0.05 % to1.80 %)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)

249257

Chromium by the Atomic Absorption Spectrometry
Method (0.006 % to 1.00 %)

220229

Chromium by the Peroxydisulfate Oxidation-Titration
Method (0.05 % to 3.99 %)

230238

Cobalt by the Nitroso-R Salt Spectrophotometric
Method (0.01 % to 0.30 %)

5362

Copper by the Atomic Absorption Spectrometry
Method (0.004 % to 0.5 %)

279288

Copper by the Neocuproine Spectrophotometric
Method (0.005 % to 1.50 %)

114123

Lead by the Ion-ExchangeAtomic Absorption Spectrometry
Method (0.001 % to 0.50 %)

132141

Manganese by the Atomic Absorption Spectrometry
Method (0.005 % to 2.0 %)

269278

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 %)

164171

Molybdenum by the Thiocyanate Spectrophotometric
Method (0.01 % to 1.50 %)

152163

Nickel by the Atomic Absorption Spectrometry
Method (0.003 % to 0.5 %)

318327

Nickel by the Dimethylglyoxime Gravimetric
Method (0.1 % to 5.00 %)

180187

Nickel by the Ion-Exchange-Atomic-Absorption Spectrometry
Method (0.005 % to 1.00 %)

188197

Phosphorus by the Alkalimetric Method
(0.02 % to 0.25 %)

172179

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 %)

103113

Silicon by the Gravimetric Titration
Method (0.05 % to 3.5 %)

4652

Sulfur by the Combustion-Iodate Titration Method
(0.005 % to 0.3 %)

3745

Tin by the Sulfide-Iodometric Titration
Method (0.01 % to 0.1 %)

95102

Tin by the Solvent Extraction-Atomic Absorption Spectrometry Method
(0.002 % to 0.10 %)

198207

Titanium, Total, by the Diantipyrylmethane Spectrophotometric
Method (0.025 % to 0.30 %)

258268

Vanadium by the Atomic Absorption Spectrometry
Method (0.006 % to 0.15 %)

239248

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

1.4 Some 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.

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

1.6 This 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 and health 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.

 
2. Referenced Documents

E354-21e1

Standard Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys (Includes all amendments and changes 2/23/2022).

E882-10(2016)e1

Standard Guide for Accountability and Quality Control in the Chemical Analysis Laboratory (Includes all amendments and changes 10/27/2017).

E1097-12(2017)

Standard Guide for Determination of Various Elements by Direct Current Plasma Atomic Emission Spectrometry

IEEE/ASTM SI 10

Standard for Use of the International System of Units (SI): The Modern Metric System

ISO 5725

Precision of Test Methods--Determination of Repeatability and Reproducibility for Inter-Laboratory Tests

E50-17

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

E60-11(2022)e1

Standard Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry (Includes all amendments and changes 6/29/2022).

E353-19e1

Standard Test Methods for Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys (Includes all amendments and changes 2/23/2022).

E1019-18

Standard Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys by Various Combustion and Inert Gas Fusion Techniques

E1024-97

Standard Guide for Chemical Analysis of Metals and Metal Bearing Ores by Flame Atomic Absorption Spectrophotometry

E1806-23

Standard Practice for Sampling Steel and Iron for Determination of Chemical Composition

D1193-06(2018)

Standard Specification for Reagent Water

E29-22

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

E135-23a

Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials (Includes all amendments and changes 7/17/2023).

E173-93

Practice for Conducting Interlaboratory Studies of Methods for Chemical Analysis of Metals (Withdrawn 1997)

E319-85(1997)

Standard Practice for the Evaluation of Single-Pan Mechanical Balances

E351-18

Standard Test Methods for Chemical Analysis of Cast IronĀ“All Types

E352-23

Standard Test Methods for Chemical Analysis of Tool Steels and Other Similar Medium- and High-Alloy Steels