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 A1 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 применения1.1 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
Aluminum, Total, by the 8-Quinolinol Spectrophotometric Method (0.003 % to 0.20 %)
71
Carbon, Total, by the Combustion–Thermal Conductivity Method
Discontinued
Carbon, Total, by the Combustion Gravimetric Method (0.05 % to 1.50 %)
Discontinued
Chromium by the Atomic Absorption Method (0.006 % to 1.00 %)
202
Chromium by the Peroxydisulfate Oxidation–Titration Method (0.10 % to 35.00 %)
212
Chromium by the Peroxydisulfate-Oxidation Titrimetric Method
Discontinued
Cobalt by the Ion-Exchange–Potentiometric Titration Method (2 % to 15 %)
53
Cobalt by the Nitroso-R-Salt Spectrophotometric Method (0.01 % to 5.0 %)
61
Copper by the Neocuproine Spectrophotometric Method (0.01 % to 5.00) %)
109
Copper by the Sulfide Precipitation-Electrodeposition Gravimetric Method (0.01 % to 5.00 %)
82
Lead by the Ion-Exchange-Atomic Absorption Method (0.001 % to 0.50 %)
127
Manganese by the Periodate Spectrophotometric Method (0.01 % to 5.00 %)
8
Molybdenum by the Ion Exchange–8-Hydroxyquinoline Gravimetric Method
242
Molybdenum by the Spectrophotometric Method (0.01 % to 1.50 %)
190
Nickel by the Dimethylglyoxime Gravimetric Method (0.1 % to 48.0 %)
172
Phosphorus by the Alkalimetric Method (0.02 % to 0.35 %)
164
Phosphorus by the Molybdenum Blue Spectrophotometric Method (0.002 % to 0.35 %)
18
Silicon by the Gravimetric Method (0.05 % to 4.00 %)
46
Sulfur by the Gravimetric Method
Discontinued
Sulfur by the Combustion-Iodate Titration Method (0.005 % to 0.5 %)
Discontinued
Sulfur by the Chromatographic Gravimetric Method
Discontinued
Tin by the Solvent Extraction–Atomic Absorption Method (0.002 % to 0.10 %)
180
Tin by the Sulfide-Iodometric Titration Method (0.01 % to 0.05 %)
90
Titanium, Total, by the Diantipyrylmethane Spectrophotometric Method (0.01 % to 0.35 %)
231
Vanadium by the Atomic Absorption Method (0.006 % to 0.15 %)
221
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 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.