ASTM E1251-07 PDF

Zirconium 0. The range shown for each element does not demonstrate the actual usable analytical range for that element. The usable analytical range may be extended higher or lower based on individual instrument capability, spectral characteristics of the specific element wavelength being used, and the availability of appropriate reference materials. Accurate analysis of Hg using this technique is compromised by the presence of an intense iron interference. Inaccurate reporting of Hg due to these interference effects can jeopardize the current designation of aluminum production as a mercury-free process.

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Zirconium 0. The range shown for each element does not demonstrate the actual usable analytical range for that element. The usable analytical range may be extended higher or lower based on individual instrument capability, spectral characteristics of the specific element wavelength being used, and the availability of appropriate reference materials.

Accurate analysis of Hg using this technique is compromised by the presence of an intense iron interference. Inaccurate reporting of Hg due to these interference effects can jeopardize the current designation of aluminum production as a mercury-free process. To demonstrate compliance with legislated Hg content limits, use of an alternate method capable of analysis with a minimum reporting limit of 0.

Other forms may be analyzed, provided that: 1 they are sufficiently massive to prevent undue heating, 2 they allow machining to provide a clean, flat surface, which creates a seal between the specimen and the spark stand, and 3 reference materials of a similar metallurgical condition and chemical composition are available.

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 safety and health statements are given in Section Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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ASTM E1251-07

The aluminum specimen to be analyzed may be in the form of a chill cast disk, casting, foil, sheet, plate, extrusion or some other wrought form or shape. The elements covered in the scope of this method are listed in the table below. Note 1 The concentration ranges given in the above scope were established through cooperative testing ILS of selected reference materials. The range shown for each element does not demonstrate the actual usable analytical range for that element. The usable analytical range may be extended higher or lower based on individual instrument capability, spectral characteristics of the specific element wavelength being used and the availability of appropriate reference materials.

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Shakara Care should be exercised when replacing depleted standardants with new ones that are from different heats or lots since the actual concentration of the individual element s may be different from the standardant currently in use. Current edition approved June 1, Proper depth of cut and desired surface? It is essential that only argon gas meeting the minimum purity of The surfaces of the reference materials and the surfaces of the specimens that are to be analyzed shall be prepared in the same manner. Typical time ranges are: It is the responsibility of the user e this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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