【国外标准】 Standard Test Methods for Chemical Analysis of Nickel, Cobalt, and High-Temperature Alloys

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 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 E882.1.1 These test methods describe the chemical analysis of nickel, cobalt, and high-temperature alloys having chemical compositions within the following limits:  Element Composition Range, %    Aluminum   0.005 to 7.00      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      Copper   0.01 to 35.00      Iron   0.01 to 50.00      Lead   0.001 to 0.01      Magnesium   0.001 to 0.05      Manganese   0.01 to 3.0      Molybdenum   0.01 to 30.0      Niobium (Columbium)   0.01 to 6.0       Nickel   0.10 to 98.0      Nitrogen   0.001 to 0.20      Phosphorus   0.002 to 0.08      Sulfur   0.002 to 0.10      Silicon   0.01 to 5.00      Tantalum   0.005 to 1.00      Tin   0.002 to 0.10      Titanium   0.01 to 5.00      Tungsten   0.01 to 18.00      Vanadium   0.01 to 3.25      Zinc   0.001 to 0.01      Zirconium   0.01 to 2.50    1.2 The test methods in this standard are contained in the sections indicated as follows:Aluminum, Total by the 8-Quinolinol Gravimetric Method (0.20 % to 7.00 %) 53 to 60Chromium by the Atomic Absorption Spectrometry Method (0.018 % to 1.00 %) 91 to 100Chromium by the Peroxydisulfate Oxidation—Titration Method (0.10 % to 33.00 %) 101 to 109Cobalt by the Ion-Exchange-Potentiometric Titration Method (2 % to 75 %) 25 to 32Cobalt by the Nitroso-R-Salt Spectrophotometric Method (0.10 % to 5.0 %) 33 to 42Copper by Neocuproine Spectrophotometric Method (0.010 % to 10.00 %) 43 to 52Iron by the Silver Reduction Titrimetric Method (1.0 % to 50.0 %) 118 to 125Manganese by the Metaperiodate Spectrophotometric Method (0.05 % to 2.00 %) 8 to 17Molybdenum by the Ion Exchange—8-Hydroxyquinoline  Gravimetric Method (1.5 % to 30 %) 110 to 117Molybdenum by the Thiocyanate Spectrophotometric Method (0.01 % to 1.50 %) 79 to 90Nickel by the Dimethylglyoxime Gravimetric Method (0.1 % to 84.0 %) 61 to 68Niobium by the Ion Exchange—Cupferron Gravimetric Method (0.5 % to 6.0 %) 126 to 133Silicon by the Gravimetric Method (0.05 % to 5.00 %) 18 to 24Tantalum by the Ion Exchange—Pyrogallol Spectrophotometric Method (0.03 % to 1.0 %) 134 to 142Tin by the Solvent Extraction-Atomic Absorption Spectrometry Method (0.002 % to 0.10 %) 69 to 781.3 Other test methods applicable to the analysis of nickel alloys that may be used in lieu of or in addition to this method are E1019, E1834, E1835, E1917, E1938, E2465, E2594, E2823.1.4 Some of the composition 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 Units—The values stated in SI units are 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 caution and hazard statements are given in Section 7 and in 13.4, 15.1.1, 15.1.2, 21.2, 22.3, 57.3, 84.2, 114.5, 115.14, 130.4, 130.5, 138.5, and 138.6.1.7 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.