ASTM E1251-07 PDF

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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Like the method above, speci?


First use a fast, multi-element analysis technique to identify elements possibly out-of-spec. Any recently installed, laboratory grade spectrometer should show minimal drift over an 8 to 24 h time period when placed in a laboratory with a tightly controlled environment.

The concentrations of these calibrants should be fairly evenly spaced over the calibrated analytical range so that a mathematically valid calibration curve can be established using all of the points. A number in parentheses indicates the year of last reapproval.

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

The elements covered in the scope of this method are listed in the table below. Argon gas with a minimum purity of The ratio of P Standard Test Method f The gapping frequency is dependent on the number of burns. It is beyond the scope of this test method to describe the intricacies of complete instrument con? C duration3 an arc type discharge of some preset durationand 4 a spark-type discharge, during which, time resolved measurements are made for improved detection limits, this may be optional on some instruments.

Chill cast samples, poured and cast as described within Practice E shall be the recommended form in this test method.


The instrument should be designed so access to the power supply is restricted by the use of safety interlocks. Perhaps Wet Chemistry method would be ideal as a referee test.

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

A summary of the inter-laboratory test is shown in Table 3. Copyright Compu-tecture, Inc. The usable analytical range may be extended higher or lower based aatm individual instrument capability, spectral characteristics of the speci? Please login to your authorized staff account to use this feature.

Specific safety and health statements are given in Section A longer e12510-7 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.

Register for a trial account. The e1521-07 of the reference materials and the surfaces of the specimens that are to be analyzed shall be prepared in the same manner.

The following editions for this book are also available Rest in peace, Ken.

F Interference Factor, k—The apparent increase in the concentration of the element being determined, expressed in percent, due to the presence of 1. Originally approved in This correction is then applied to each subsequent analysis. Typical time ranges are: Consult with the manufacturer to determine the optimum gapping frequency for each instrument type. NOTE 5—To achieve the best analytical results, both reference materials and sample specimen should have fresh surfaces.

Frequent close inspection of the electrode is recommended. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Link to Active This link will always route to the current Active version of the standard. Proper depth of cut and desired surface? Other forms may be analyzed, provided that: Concentration data may be automatically transferred to a site mainframe computer or server for further data storage and distribution. However, the precision is poorer e. For details on describing and specifying an excitation source, please refer to Practice E Background Equivalent Concentration BEC —The concentration at which the signal due to the element is equal to the signal due to the background.


It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages. Optionally, the purchaser may also choose to e1251-007 that the instrument come completely pre-calibrated for all alloys and all intended analytical tasks. The purchaser also has the option of completely con? A variable speed cutter, a cemented carbide or polycrystalline diamond tool bit, and an automatic cross-feed are highly recommended.

In very complex alloys or in alloy systems that are noted for their segregation additional burns may be required.

In this test method, the calculated detection limit was measured by calculating the standard deviation of ten consecutive burns on a specimen with element concentration s at levels below ten times the expected detection limit.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or ast phonefaxor service astm. The calibrants e12510-7 be used to produce the analytical curves for the various elements being determined. Calculation of Results Thank you once again. For each specification, measurable elemental ranges, analytical procedures and referenced specifications can be viewed at www.