Значение и использование

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 B02 on Nonferrous Metals and 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 E 882.

Область применения

1.1 These test methods describe the chemical analysis of nickel, cobalt, and high-temperature alloys having chemical compositions within the following limits:

ElementConcentration Range, % Aluminum0.005 to 7.00 Beryllium0.001 to 0.05 Boron0.001 to 1.00 Calcium0.002 to 0.05 Carbon0.001 to 1.10 Chromium0.10 to 33.00 Cobalt0.10 to 75.00 Copper0.01 to 35.00 Iron0.01 to 50.00 Lead0.001 to 0.01 Magnesium0.001 to 0.05 Manganese0.01 to 3.0 Molybdenum0.01 to 30.0 Niobium (Columbium)0.01 to 6.0 Nickel0.10 to 98.0 Nitrogen0.001 to 0.20 Phosphorus0.002 to 0.08 Sulfur0.002 to 0.10 Silicon0.01 to 5.00 Tantalum0.005 to 1.00 Tin0.002 to 0.10 Titanium0.01 to 5.00 Tungsten0.01 to 18.00 Vanadium0.01 to 3.25 Zinc0.001 to 0.01 Zirconium0.01 to 2.50

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 7.00 %) 62 to 69 Chromium by the Atomic Absorption Method
(0.018 % to 1.00 %) 100 to 109 Chromium by the Peroxydisulfate Oxidation—Titration Method
(0.10 % to 33.00 %) 110 to 118 Cobalt by the Ion-Exchange-Potentiometric Titration Method
(2 % to 75 %) 34 to 41 Cobalt by the Nitroso-R-Salt Photometric Method
(0.10 % to 5.0 %) 42 to 51 Copper by Neocuproine Photometric Method (0.010 % to 10.00 %) 52 to 61 Iron by the Silver Reduction Titrimetric Method
(1.0 % to 50.0 %) 127 to 134 Manganese by the Metaperiodate Photometric Method (0.05 % to
2.00 %) 8 to 17 Molybdenum by the Ion Exchange—8-Hydroxyquinoline
Gravimetric Method (1.5 % to 30 %) 119 to 126 Molybdenum by the Photometric Method
(0.01 % to 1.50 %) 88 to 99 Nickel by the Dimethylglyoxime Gravimetric Method
(0.1 % to 84.0 %) 70 to 77 Niobium by the Ion Exchange—Cupferron Gravimetric Method
(0.5 % to 6.0 %)135 to 142 Silicon by the Gravimetric Method (0.05 % to 5.00 %) 27 to 33 Sulfur by the Combustion-Iodate Titration Method
(0.006 % to 0.1 %) 18 to 26 Tantalum by the Ion Exchange—Pyrogallol Spectrophotometric
Method (0.03 % to 1.0 %)143 to 151 Tin by the Solvent Extraction-Atomic Absorption Method
(0.002 % to 0.10 %) 78 to 87

1.3 Methods for the determination of several elements not included in these test methods can be found in Test Methods E 30, E 76, and E 1019.

1.4 Some of the concentration ranges given in 1.1 are too broad to be covered by a single method, and therefore, these test methods contain multiple 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 Practice E 380 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 hazard statements are given in Section 7 and in 13.4, 29.1, 66.3, 123.5, 124.14, 139.4, 139.5, 147.5, and 147.6.

8.1 This test method covers the determination of manganese in concentrations from 0.05 % to 2.00 %.

18.1 This test method covers the determination of sulfur in concentrations from 0.006 % to 0.1 %.

27.1 This test method covers the determination of silicon in concentrations from 0.05 % to 5.00 % in alloys containing not more than 0.1 % boron.

34.1 This test method covers the determination of cobalt in concentrations from 2 % to 75 %.

42.1 This test method covers the determination of cobalt in concentrations from 0.10 % to 5.0 %.

52.1 This test method covers the determination of copper in concentrations from 0.010 % to 1.50 %.

62.1 This test method covers the determination of total aluminum in concentrations from 0.20 % to 7.00 %.

70.1 This test method covers the determination of nickel in concentrations from 0.1 % to 84.0 %.

78.1 This test method covers the determination of tin in the range from 0.002 % to 0.10 %.

88.1 This test method covers the determination of molybdenum in concentrations from 0.01 % to 1.50 %.

100.1 This test method covers the determination of chromium in concentrations from 0.018 % to 1.00 %.

110.1 This test method covers the determination of chromium in concentrations from 0.10 % to 33.00 %.

119.1 This test method covers the determination of molybdenum in concentrations from 1.5 % to 30 %.

127.1 This test method covers the determination of iron in concentrations from 1.0 % to 50.0 %.

135.1 This test method covers the determination of niobium (columbium) in concentrations from 0.5 % to 6.0 %.

143.1 This test method covers the determination of tantalum in concentrations from 0.03 % to 1.0 %.