ASTM E1251-07 PDF

ASTM E – Download as PDF File .pdf), Text File .txt) or read online. Standards. This test method is under the jurisdiction of ASTM Committee E01 on For E – 07 in Spectrochemical Analysis calculations are used to correct for both. Designation: E – 07 Standard Test Method for Analysis of Other forms may 1 This test method is under the jurisdiction of ASTM.

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Also, there are other commercial sources for aluminum reference materials.

What is most accurate “referee” method for composition analysis of aluminum alloys?

The emission methods are less accurate on heterogeneous alloys especially castings since conducted using solid samples; special splat quenched samples or multiple analyses can compensate. These have been found aatm produce comparable analytical performance.

Ken Vlach, Thank you so much for your answer. Care should be taken when using 3rd and 4th order regressions that enough standards are available to adequately cover the entire range.

For best performance it is strongly recommended that the counter electrode be cleaned after every burn. Concentration data may be automatically transferred to a site mainframe computer or server for further data storage and distribution. All connections must be leak-free. The E34 methods are generally more accurate within given alloy concentration ranges.

Users of this standard are expressly astmm that determination of the validity of any such patent rights, and the risk e121-07 infringement of such rights, are entirely their own responsibility.


The exhaust can then be vented into an efficient hood system. Perhaps Wet Chemistry method would be ideal as a referee test. The purchaser also has the option of completely con? Preparation of Reference Materials and Specimen 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.

The ratio of P The gages on the regulator will allow for the adjustment of the gas pressure to the instrument. Specific safety and health statements are given in Section It is recommended aatm the gap of the electrode be checked e1251-0.


Differences in structure, such as result from the sodium modi? Choice of analytical method will depend upon alloy. Use the appropriate program that allows for the calculation of the calibration curves. When a burn is rejected, it should be replaced in order to maintain the normal number of burns to be averaged. A longer pre-spark and exposure may result in better precision and accuracy with less sample through-put while a shorter pre-spark and exposure will increase sample throughput but may decrease precision and accuracy.

Therefore, the instrument shall be designed with an internal exhaust system that is equipped with its own set of? In very complex alloys or in alloy systems that are noted for their segregation additional burns may be required. These materials should also possess a metallurgical condition that is similar to the material s that are being analyzed.


However, it should be noted that some elements for example, magnesium readily form oxides, while some others for example, sodium, lithium, calcium, and strontium are volatile, and may be lost to varying degrees during the melting process. It is recommended that the purchaser specify that the instrument come with several spare counter electrodes so that they can be replaced when necessary.

Search book title Enter keywords for book title search. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

What is most accurate “referee” method for composition analysis of aluminum alloys?

Other forms may be analyzed, atm that: The gap distance between the specimen surface and the tip of the counter electrode is speci? Other forms may be analyzed, provided that: The signals are ratioed to the proper internal standard signal and converted into concentrations by a computer in accordance with Practice E The range shown for each element does not demonstrate the actual usable analytical range for that element. When this is done, great care must be exercised in the selection of the correct analytical conditions, analytical channels, internal standard channels, calibration ranges and calibrants to meet the speci?

Wet chemistry is better for average alloy composition since it uses dissolved samples. S1251-07 32 – latest.