ASTM ER Standard Test Method for Determination of Hydrogen in Titanium and Titanium Al_材料科学_工程科技_专业资料。. ASTM E() Standard Test Method for Determination of Hydrogen in Titanium and Titanium Alloys by Inert Gas Fusion Thermal Conductivity/Infrared. Buy ASTM E TEST METHOD FOR DETERMINATION OF HYDROGEN IN TITANIUM AND TITANIUM ALLOYS BY INERT GAS.
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No other units of measurement are included in this standard.
National Institute of Standards and Technology. Sm, there is evidence that the repeatability of the particular instrument is not acceptable for use with this test method. This prediction interval may be calculated using Eq 1 and the s and n values for the mid-range reference material. If your results are not comparable, investigate and correct the cause. NOTE 7—If the unit does not have this function, the average blank must be subtracted from the total result. If a continuing calibration veri?
Current edition approved Aug. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Last previous edition approved in as E — Either acceptance limit criterion is acceptable for routine operation. Rinse the sample in acetone, and air dry. Treat each specimen as directed in Indications that the sample has overheated while being worked may include discoloration of the metal or the sample becoming too hot to handle without tools.
Calculate the average and standard deviation s of these results. Standard Test Method f NOTE 14—Typically, repeatability standard deviation is a function of the concentration of the analyte.
An alternate procedure can be implemented where this value should agree with the certi? NOTE 9—Some instruments have expanded computer capabilities that allow multi-point calibration which may improve the accuracy and precision of the calibration over the single-point calibration methodology as tested in the current interlaboratory study ILS. The mid-range material must have a hydrogen concentration that is above the limit of detection, but below that of the high calibration point, preferably as close to the mid-point of the calibration curve as possible.
Make a minimum of two determinations using a specimen as directed in Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. D Standard Reference Material: Specimens must be of an appropriate size to? The testing and statistical analysis were performed in accordance with the provisions of Practice E, Plan A. A number in parentheses indicates the year of last reapproval.
Samples shall be handled only with tweezers or forceps after cleaning and weighing to prevent contamination.
Reagents and Materials 8. The accuracy of this test method may be judged by comparing the results obtained from certi?
Preparation of Apparatus Originally approved in Weigh to 6 0. Analyze at least three reference material specimens to determine the calibration slope Note 8. This mechanism will electronically compensate for the blank value.
Chemical Testing at WMT&R Inc.
If the prediction interval does not encompass the certi? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. The user should determine and correct the cause, and repeat The accuracy of this test method is largely dependent upon the absence of bias in the hydrogen values assigned to the reference materials and upon the homogeneity of these materials.
Each has its own unique design characteristics and operational requirements. 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.
The prediction interval is de? The hydrogen is separated from other liberated gases such as carbon monoxide and? For specimens of unknown 2 Use the size crucibles recommended by the manufacturer of the instrument.