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.
|Published (Last):||11 September 2017|
|PDF File Size:||2.86 Mb|
|ePub File Size:||1.62 Mb|
|Price:||Free* [*Free Regsitration Required]|
In the absence of bias among the reference materials, the average result for this reference material should agree with the certi?
Chemical Testing at WMT&R Inc.
D Standard Reference Material: The testing and statistical analysis were performed in accordance with the provisions of Practice E, Plan A. An alternate procedure can be implemented where this value should agree with the certi?
Calculate the average and standard deviation s of these results. Analyze at least three reference material specimens to determine the calibration slope Note 8.
Preparation of Apparatus 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. Rinse the sample in acetone, and air dry. Calibration was performed utilizing a single calibration material NBS?
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. This cannot be corrected by making adjustments to the instrument.
Last previous edition approved in as E — NOTE 13—Commercially available reference materials are not always available at the concentration required to e14477 a true mid-point check.
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.
The hydrogen is separated from other liberated gases such as carbon monoxide and? Make a minimum of two determinations using a 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. The ILS used an acceptance criterion where the value fell within the allowable limits of the certi? NOTE 14—Typically, repeatability standard deviation is a function of the concentration of the analyte.
National Institute of Standards and Technology.
Aatm approved in NOTE 7—If the unit does not have this function, the average blank must be subtracted from the total result. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? The accuracy of this test method may be judged by comparing the results obtained from certi?
Each has its own unique design characteristics and operational requirements. Use the size crucibles recommended by the manufacturer of the instrument. In this case instrument response must always be veri? Several models of commercial analyzers are available and presently in use in industry. E Standard Reference Material under development: Hydrogen present in the sample is released as molecular hydrogen into the?
It is expected that the work will be performed in a properly equipped laboratory. Summary of Test Method 4. ASTM D The prediction interval is de? Material is in chip form. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee satm Standards, at the address shown below. Sm, there is evidence that the repeatability of the particular instrument is not acceptable for use with this test method.
For specimens of unknown 2 Sstm 16—If the analyzer does not offer these functions, calculate the hydrogen content by the following method: Current edition approved Aug. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. This mechanism will electronically compensate for the blank value. Either acceptance limit criterion is acceptable for routine operation. Specimens must be of an appropriate size to?