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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Use the size crucibles recommended by the manufacturer of the instrument. This cannot be corrected by making adjustments to the instrument.
Preparation of Apparatus E Standard Reference Material under development: NOTE 2—Carrier gases vary by instrument model and include highpurity argon, nitrogen, and helium. D Standard Reference Material: The data are presented in Table 1. Material is in chip form.
NOTE 13—Commercially available reference materials are not always available at the concentration required to have a true mid-point check. The hydrogen is separated from other liberated gases such as carbon monoxide and?
This titanium hydrogen reference material should have a hydrogen content r1447 than or approximately equal to the unknown samples within the scope of this test method 0. 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 testing and statistical analysis were performed in accordance with the provisions of Practice E, Plan A. In this case instrument response must always be veri? Either acceptance limit criterion is e147 for routine operation. NOTE 15—The presence of bias between the reference material used in Last previous edition approved in as E — NOTE 7—If the unit does not have this function, the average blank must be subtracted from the total result.
Chemical Testing at WMT&R Inc.
Several models of commercial analyzers are available and presently in use in industry. Samples shall be astj only with tweezers or forceps after cleaning and weighing to prevent contamination. For specimens of unknown 2 Originally approved in The mid-range e14447 must have a hydrogen concentration that is above the limit of detection, aatm below that of the high calibration point, preferably as close to the mid-point of the calibration curve as possible. National Institute of Standards and Technology.
The prediction interval is de? 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.
No other units of measurement are included in this standard.
The user should determine and correct the cause, and repeat The acceptance range for the veri? Other methods, such as turning down on a lathe, may be employed for reducing sample size and removing the surface of the sample Note 3. Standard Test Method f 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 zstm own responsibility.
A number in parentheses indicates the year of last reapproval. It is the responsibility qstm the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 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.
Reagents and Materials 8.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. If your results are not comparable, investigate and correct the cause. Results must be supported by acceptable preceding and subsequent veri? The accuracy of this test method may be judged by comparing the results obtained from certi?
An alternate procedure can be implemented where this value should agree with the certi? Your comments are invited either for revision of this standard or for additional 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. This mechanism will electronically compensate for the blank value. In the absence of bias among the reference materials, the average result for this reference material should agree with the certi?
If a continuing calibration veri? Use a fresh crucible each time. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
If the prediction interval does not encompass the certi? Current edition approved Aug.