Standard Test Method for Analysis of Carbon and Low-Alloy Steel by Spark Atomic Emission Spectrometry – ASTM E Standard Number, ASTM E – Title, Standard Test Method for Analysis of Carbon and Low-Alloy Steel by Spark Atomic Emission. Designation: E − 15Standard Test Method for Contact ASTM Customer Standards volume information, refer to the standard’s Document Summary page.

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Clean the lens or protective window after approximately e4115 excitations to minimize transmission losses. Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer wstm. It is designed for chill-cast, rolled, and forged specimens. Better performance is expected when reference materials and specimens are of similar metallurgical condition and composition.

Other specimens may exhibit greater or less variability using the same instrument and excitation conditions. There shall be at least three calibrants for each element, spanning the required concentration range.

These reference materials shall be homogeneous and contain appropriate amounts of each element, covering the concentration range of elements contained in the specimens. The primary slit width is 20 to 50? The data are given in Table 7 Note However, because of differences between these CRMs and the production specimens prepared by the sampling procedures recommended for this test method, curves based on CRMs may in very unusual circumstances need to be corrected with values from reference materials made by normal production sampling techniques and analyzed in accordance with Test Methods E 30, Eand E 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.

A number in parentheses indicates the year of last reapproval. NOTE 12—A high-purity argon atmosphere is required at the analytical gap. Its approximate range shall be from Originally published as E — Cut a 13 to mm 1?

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However, it is not required for all applications of this standard. Preparation of Apparatus NOTE 7—The instructions given herein apply to most spectrometers; however, some settings and adjustments may need to be varied, and additional preparation of the equipment may be required.

Masks shall be provided in the spectrometer to eliminate scattered radiation. The absorption of the radiation by air in this region is overcome by evacuating the spectrometer and? The mass fraction ranges of the elements listed have been established through cooperative testing 2 of reference materials.

Secondary slit width is 50 to ? There were no books found for the applied search filters. Are you sure you want to empty the cart? Use either a 3, 4, or 5-mm The spark chamber shall be mounted directly on the spectrometer, and shall be provided with a spark stand to hold a? Repeat with different random sequences at least two times.

Calibration, Standardization, and Veri? B Interferences are dependent upon instrument design, dispersion, spectrum line choices, and excitation conditions, and those listed require con?

ASTM-E, –

B Interferences are dependent upon instrument ee415, spectrum astj choices, and excitation conditions, and those listed require con? Using the averages of the data for each point, determine analytical curves as directed in Practices E and E Included, in addition to the original data of Test Method E — 71, are data from cooperative testing of a broader range of reference materials to expand the element concentration ranges.

However, if boron nitride disks are used to mechanically restrict the excited area of the sample, a properly excited specimen may not exhibit a dark ring. The potentials on the capacitors may r415 read directly, or a number of different readout systems may be employed which yield linear or logarithmic functions of the potentials and which may be displayed as relative numbers or as numbers calibrated directly in terms of percent.

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The discharge is terminated at a predetermined intensity time integral of a selected iron line, or at a predetermined time, and the relative radiant energies or concentrations of the analytical lines are recorded.

If readings are not in conformance, repeat the standardization. NOTE 10—When parameter values are established, maintain them carefully. Molecular gas impurities, nitrogen, oxygen, hydrocarbons, or water vapor, either in the astk system or from improperly prepared specimens should be minimized.

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The specimen surface should be kept clean because the specimen is the electron emitter, and electron emission is inhibited by oily, dirty surfaces.

B Quantitative range in accordance with Practice E Standardization will be done anytime veri?

ASTM E415 – 17

A superscript epsilon e indicates an editorial change since the last revision or reapproval. Enter your account email address to request a password reset: The ring is placed on a?

Other internal standard and analytical lines, such as e15 listed in Table 2, may be used provided that it can be shown experimentally that equivalent precision and accuracy are obtained. Active view current version of standard. Excitation and Exposure Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.

Condition a fresh counter electrode with two to six excitations using the operating conditions in accordance with Work Item s – proposed revisions of this standard. The number of acceptable excitations on an electrode varies from one instrument to another, and should be established in each laboratory. Better performance is expected when reference materials and specimens are of similar metallurgical condition and composition.