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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Enter your asfm account email address to request a password reset: It is designed for chill-cast, rolled, and forged specimens. Other internal standard and analytical lines, such as those listed in Table 2, may be used provided that it can be shown experimentally that equivalent precision and accuracy are obtained.
A capacitor discharge is produced between the? 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.
Enter your account email address to request a password reset: It is expected that work will be performed in a properly equipped laboratory. The spark chamber shall be mounted directly on the spectrometer, and shall be provided with a spark stand to hold a? Precision and Bias The 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.
With that equipment, a smooth, white, texture burn without the characteristic dark ring indicates an improperly excited specimen. Excitation and Radiation Measurements Current edition approved Nov. For this purpose, veri?
Using the averages of the data for each point, determine analytical curves as directed in Practices E and E Originally published as E — Condition a fresh counter electrode with two to w415 excitations using the operating conditions in accordance with Its approximate range shall be from Make certain that the specimens are homogeneous and free from voids and pits in the region to be excited Note 5. A number in parentheses indicates the year of last reapproval.
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 wall thickness of s415 mold is approximately 32 mm 11? The data are given in Table 7 Note Center the analytical gap on the optical axes of the spectrometer. Cut a 13 to mm 1? Make the necessary corrections either by adjusting the controls on the readout or by applying arithmetic corrections.
The mass fraction ranges of the elements listed have been established through cooperative testing 2 of reference materials. 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.
These cover all or part of the concentration ranges listed in 1. B Quantitative range in accordance with Practice E Rough grind the cut surface by grinding on a belt surfacer, either wet or dry, with 50 to grit abrasive belt.
With a thoriated tungsten electrode, it has been reported that a hundred or more excitations can usually be made before replacement.
NOTE 2—Clean the excitation chamber when the counter electrode is replaced. However, it is not required for all applications of this standard. The potentials on the capacitors may be 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.
ASTM E415 – 17
B Interferences are dependent upon instrument design, dispersion, spectrum line choices, and excitation conditions, and those listed require con? The spectrometer shall be operated at a vacuum of 25?
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.
Repeat with different random sequences at least two times.