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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The data are asfm in Table 7 Note Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.
NOTE 8—The lines listed in Table 1 have proven satisfactory for the elements and concentration ranges described in the scope. Nominal values found to be adequate are listed as follows: NOTE 6—Reference materials and specimens shall be re?
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. The specimen surface should be kept clean because the specimen is the electron emitter, and electron emission is inhibited by oily, dirty surfaces.
Originally published as E — Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Clean the lens or protective window after approximately to excitations to minimize transmission losses.
Other specimens may exhibit greater or less variability using the same instrument and excitation conditions. Asstm Compu-tecture, Inc. Rough grind the cut surface by grinding on a belt surfacer, either wet or dry, with 50 to grit abrasive belt. NOTE 12—A high-purity argon atmosphere is required at the analytical gap.
Means of changing the? For this purpose, veri? Secondary slit width is 50 to ? The spectrometer shall be provided with an air inlet and a vacuum outlet. This shall be done initially and as often as necessary thereafter to maintain proper alignment. With that equipment, a smooth, white, texture burn without the characteristic dark ring indicates an improperly excited specimen.
A number in parentheses indicates the year of last reapproval. Excitation and Exposure NOTE 4—A black deposit builds up on the tip of the electrode, thus reducing the overall intensity of the spectral radiation. Astk specimen thickness can vary significantly according to the design of the spectrometer stand, but a thickness between 10 mm and 38 mm has been found to be most practical.
Make certain that the specimens are homogeneous and free from voids and pits in the region to be excited Note 5. Users of this standard are expressly advised that determination of the validity of any such patent e4155, and the risk of infringement of such rights, are entirely their own responsibility. Last previous edition E — NOTE 10—When parameter values are established, maintain them carefully.
The reference materials and specimens should be of similar metallurgical condition and composition. Once established, maintain the parameters consistently. No items in cart. A capacitor discharge is produced between astn Calibration, Standardization, and Veri?
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.
Work Item s – proposed revisions of this standard. NOTE 14—With certain spectrometers, a properly excited specimen usually exhibits a dark ring around the pitted sparked area.
It is assumed that all who use this test method will be analysts capable of performing common laboratory procedures skillfully and safely. If within the potential range the tube is either too sensitive or too insensitive for the element concentration range, select another photomultiplier. Better performance is expected when reference materials and specimens are of similar metallurgical condition and composition. Each laboratory should establish a suitable check procedure.
Make the necessary corrections either by adjusting the controls on the readout or by applying arithmetic corrections. 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.
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Using the averages of the data for each point, determine analytical curves as directed in Practices E and E In general this condition will not affect analytical performance for the?
Preparation of Specimens and Reference Materials 9. Included, in addition to the original data of Test Method E — 71, are data from cooperative testing asgm a broader range adtm reference materials to expand the element concentration ranges. B Quantitative range in accordance with Practice E These cover all or part of the concentration ranges listed in 1. NOTE 1—The concentration ranges of the elements listed have been established through cooperative testing2 of reference xstm. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
The wall thickness of the mold is approximately 32 mm 11? FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER.