Значение и использование

4.1 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 Committee A01 on Steel, Stainless Steel, and Related Alloys. 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.

Область применения

1.1 These test methods cover the chemical analysis of stainless, heat-resisting, maraging, and other similar chromium-nickel-iron alloys having chemical compositions within the following limits:

 

 Element

Composition Range, %

 

Aluminum

 

0.002

to  5.50

 

Boron

 

0.001

to  0.20

 

Carbon

 

0.01

to  1.50

 

Chromium

 

0.01

to 35.00

 

Cobalt

 

0.01

to 15.00

 

Niobium

 

0.01

to  4.00

 

Copper

 

0.01

to  5.00

 

Lead

 

0.001

to  0.50

 

Manganese

 

0.01

to 20.00

 

Molybdenum

 

0.01

to  7.00

 

Nickel

 

0.01

to 48.00

 

Nitrogen

 

0.001

to  0.50

 

Phosphorus

 

0.002

to  0.35

 

Selenium

 

0.01

to  0.50

 

Silicon

 

0.01

to  4.00

 

Sulfur

 

0.002

to  0.50

 

Tantalum

 

0.01

to  0.80

 

Tin

 

0.001

to  0.05

 

Titanium

 

0.01

to  4.50

 

Tungsten

 

0.01

to  4.50

 

Vanadium

 

0.005

to  1.00

 

Zirconium

 

0.001

to  0.20

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

 

Sections

Aluminum, Total, by the 8-Quinolinol Gravimetric Method (0.20 % to 7.00 %)

119–126

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

71–81

Carbon, Total, by the Combustion–Thermal Conductivity Method–Discontinued 1986

153–163

Carbon, Total, by the Combustion Gravimetric Method (0.05 % to 1.50 %)–Discontinued 2013

98–108

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

202–211

Chromium by the Peroxydisulfate Oxidation–Titration Method (0.10 % to 35.00 %)

212–220

Chromium by the Peroxydisulfate-Oxidation Titrimetric Method-Discontinued 1980

145–152

Cobalt by the Ion-Exchange–Potentiometric Titration Method (2 % to 15 %)

53–60

Cobalt by the Nitroso-R-Salt Spectrophotometric Method (0.01 % to 5.0 %)

61–70

Copper by the Neocuproine Spectrophotometric Method (0.01 % to 5.00) %)

109–118

Copper by the Sulfide Precipitation-Electrodeposition Gravimetric Method (0.01 % to 5.00 %)

82–89

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

127–136

Manganese by the Periodate Spectrophotometric Method (0.01 % to 5.00 %)

9–18

Molybdenum by the Ion Exchange–8-Hydroxyquinoline Gravimetric Method

242–249

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

190–201

Nickel by the Dimethylglyoxime Gravimetric Method (0.1 % to 48.0 %)

172–179

Phosphorus by the Alkalimetric Method (0.02 % to 0.35 %)

164–171

Phosphorus by the Molybdenum Blue Spectrophotometric Method (0.002 % to 0.35 %)

19–30

Silicon by the Gravimetric Method (0.05 % to 4.00 %)

46–52

Sulfur by the Gravimetric Method-Discontinued 1988

30–36

Sulfur by the Combustion-Iodate Titration Method (0.005 % to 0.5 %)-Discontinued 2014

37–45

Sulfur by the Chromatographic Gravimetric Method-Discontinued 1980

137–144

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

180–189

Tin by the Sulfide Precipitation-Iodometric Titration Method (0.01 % to 0.05 %)

90–97

Titanium by the Diantipyrylmethane Spectrophotometric Method (0.01 % to 0.35 %)

231–241

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

221–230

1.3 Test methods for the determination of carbon and sulfur 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 method with the composition of the alloy to be analyzed.

1.5 The values stated in SI units are to be regarded as standard.

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, 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.

1.7 This 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.