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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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. NOTE 3—Regardless of the method used, the sample must not be allowed to overheat, as this will adversely affect the results of the analysis. NOTE 15—The presence of bias between the reference material used in For specimens of unknown 2 Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
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.
Calculate the average and standard deviation s of these results. Make a minimum of two determinations using a specimen as directed in In this case instrument response must always be veri?
Analyze at least three reference material specimens to determine the calibration slope Note 8. Last previous edition approved in as E — In the absence of bias among the reference materials, the average result for this reference material should agree with the certi?
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Preparation of Apparatus Samples shall be handled only with tweezers or forceps after cleaning and weighing to prevent contamination. If a continuing calibration veri? NOTE 13—Commercially available reference materials are not always available at the concentration required to have a true mid-point check.
NOTE 16—If the analyzer does not offer these functions, calculate the hydrogen content by the following method: No other units adtm measurement are included in this standard. Weigh to 6 0. NOTE 2—Carrier gases vary by instrument model and include highpurity e14447, nitrogen, and helium. 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 user should determine and correct the cause, and repeat NOTE e14477 the unit does not have this function, the average blank must be subtracted from the total result. Your comments are invited either for revision of this standard or for ast standards and should be addressed to ASTM International Headquarters.
This prediction interval may be calculated using Eq 1 and the s and n values for the mid-range reference material. Current edition approved Aug. ASTM D 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 ILS used an acceptance criterion where the value fell within the allowable limits of the certi? Dial the sample weight or a multiple of the sample weight on the weight compensator and use the where: Sm, there is evidence that the repeatability of the particular instrument is not acceptable for use with this test method. Treat each specimen as directed in If the prediction e447 does not encompass the certi?
Other methods, such astn turning down on a asstm, may be employed for reducing sample size and removing the surface of the sample Note 3. Specimens must be of an appropriate size to? Either acceptance limit criterion is acceptable for routine operation. The prediction interval is de? Your comments will receive r1447 consideration at a meeting of the responsible technical axtm, which you may attend.
The accuracy of this test method may be judged by comparing the results obtained from certi? Rinse the sample in acetone, and air dry. This cannot be corrected by making adjustments to the instrument. A number in parentheses indicates the year of last reapproval. National Institute of Standards and Technology.
Each has its own unique design characteristics and operational requirements.