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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Masks shall be provided in the spectrometer to eliminate scattered radiation. Once established, maintain the parameters consistently.
Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
The reference materials and specimens should be of similar metallurgical condition and composition. The specimen thickness can vary significantly according to the design of the spectrometer e4415, but a thickness between 10 mm and 38 mm has been found to be most practical. The mass fraction ranges of the elements listed have been established through cooperative testing 2 of reference materials.
ASTM E415 – 17
These cover all or part of the concentration ranges listed in 1. However, it is not required for all applications of this standard. The primary slit width is 20 to 50? It is assumed that all who use this test method will be analysts capable of performing common laboratory procedures skillfully and safely.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Its approximate range shall be from Calibration, Standardization, and Veri? Additional data for withinlaboratory variability of results, obtained by analyzing three specimens of one material in seven laboratories in accordance with source conditions speci?
If within the potential range the tube is either too sensitive or too insensitive for the element concentration range, select another photomultiplier. NOTE 12—A high-purity argon atmosphere is required at the analytical gap. Cut a 13 to mm 1? Automatic sequencing shall be provided to actuate the? With that equipment, a smooth, white, texture burn without the characteristic dark ring indicates an improperly excited specimen. Secondary slit width is 50 to ? If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
For this purpose, veri? Standardization will be done anytime veri? Other specimens may exhibit greater or less variability using the same instrument and excitation conditions.
Originally published as E — 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 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.
Are you sure you want to empty the cart? If readings are not in conformance, repeat the standardization. Link to Active This link will always route to the current Active version of the standard. These reference materials shall be homogeneous and contain appropriate amounts of each element, covering the concentration range of elements contained in the specimens.
With a thoriated tungsten electrode, it has been reported that a hundred or more excitations can usually be made before replacement. Current edition approved Nov. Using the averages of ast, data for each point, determine analytical curves as directed in Practices E and E If you like to setup a quick demo, let us know at support madcad.
The mass fraction ranges of the elements listed have been established through cooperative testing 2 of reference materials. Make certain that the specimens are homogeneous and free from voids and pits in the region to be excited Note 5. NOTE 9—The manner and frequency of positioning or checking the position of the exit slits will depend on factors such as: B Interferences are dependent upon instrument design, dispersion, spectrum line choices, and excitation conditions, and those listed require con?
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. The potentials on the capacitors may be read atsm, 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.
Repeat with different random sequences at least two times. No items in cart.
NOTE 14—With certain spectrometers, a properly excited specimen usually exhibits a dark ring around the pitted sparked area. A capacitor discharge is produced between the?
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Precision and Bias It is designed for chill-cast, rolled, and forged specimens. It is designed for chill-cast, rolled, and forged specimens. The absorption of the radiation by air in this region is overcome by evacuating the spectrometer and? Each laboratory should establish a suitable check asstm.
It is the responsibility of the user of this standard to establish appropriate safety and asym practices and determine the applicability of regulatory limitations prior to use. NOTE 13—The range of anode to cathode potentials for a given tube should be speci?