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 the ASTM Committee 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 high-temperature, electrical, magnetic, and other similar iron, nickel, and cobalt alloys having chemical compositions within the following limits:

 

  Element

Composition Range, %

 

 

 

 

 

 

 

 

Aluminum

0.005

to

18.00

 

 

Beryllium

0.001

to

 0.05

 

 

Boron

0.001

to

 1.00

 

 

Calcium

0.002

to

  0.05

 

 

Carbon

0.001

to

 1.10

 

 

Chromium

0.10 

to

33.00

 

 

Cobalt

0.10 

to

75.00

 

 

Columbium (Niobium)

0.01 

to

 6.0

 

 

Copper

0.01 

to

10.00

 

 

Iron

0.01 

to

85.00

 

 

Magnesium

0.001

to

 0.05

 

 

Manganese

0.01 

to

 3.0

 

 

Molybdenum

0.01 

to

30.0

 

 

Nickel

0.10 

to

84.0

 

 

Nitrogen

0.001

to

 0.20

 

 

Phosphorus

0.002

to

 0.08

 

 

Silicon

0.01 

to

 5.00

 

 

Sulfur

0.002

to

 0.10

 

 

Tantalum

0.005

to

10.0

 

 

Titanium

0.01 

to

 5.00

 

 

Tungsten

0.01 

to

18.00

 

 

Vanadium

0.01 

to

 3.25

 

 

Zirconium

0.01 

to

 2.50

 

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 %)

100

Carbon, Total, by the Combustion-Thermal Conductivity Method

Discontinued

Carbon, Total, by the Combustion Gravimetric Method (0.05 % to
 1.10 %)

Discontinued

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

165

Chromium by the Peroxydisulfate Oxidation—Titration Method
 (0.10 % to 33.00 %)

 175

Chromium by the Peroxydisulfate-Oxidation Titrimetric Method

Discontinued

Cobalt by the Ion-Exchange-Potentiometric Titration Method (2 % to
 75 %)

 53

Cobalt by the Nitroso-R-Salt Spectrophotometric Method (0.10 % to 5.0 %)

 61

Copper by Neocuproine Spectrophotometric Method (0.01 % to 10.00 %)

 90

Copper by the Sulfide Precipitation-Electrodeposition Gravimetric
 Method (0.01 % to 10.00 %)

 71

Iron by the Silver ReductionTitrimetric Method (1.0 % to 50.0 %)

192

Manganese by the Periodate Spectrophotometric Method (0.05 % to 2.00 %)

 9

Molybdenum by the Ion Exchange—8-Hydroxyquinoline Gravi-
 metric Method (1.5 % to 30 %)

184

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

153

Nickel by the Dimethylglyoxime Gravimetric Method (0.1 % to
 84.0 %)

135

Phosphorus by the Molybdenum Blue Spectrophotometric Method
(0.002 % to 0.08 %)

 19

Silicon by the Gravimetric Method (0.05 % to 5.00 %)

 46

Sulfur by the Gravimetric Method

Discontinued

Sulfur by the Combustion-Iodate Titration Method (0.005 % to
 0.1 %)

Discontinued

Sulfur by the Chromatographic Gravimetric Method

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

143

1.3 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 method and therefore this standard contains multiple methods for some elements. The user must select the proper 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 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.