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):||7 August 2016|
|PDF File Size:||18.73 Mb|
|ePub File Size:||9.17 Mb|
|Price:||Free* [*Free Regsitration Required]|
NOTE 7—If the unit does not have this function, the average blank must be subtracted from the total result. The hydrogen is separated from other liberated gases such as carbon monoxide and? D Standard Reference Material: This mechanism will electronically compensate for the blank value.
The testing and statistical analysis were performed in accordance with the provisions of Practice E, Plan A. This titanium hydrogen reference material should have a hydrogen content greater than or approximately equal to the unknown samples within the scope of this test method 0.
Chemical Testing at WMT&R Inc.
Use the size crucibles recommended by the manufacturer of the instrument. If a continuing calibration veri? Dial the sample weight or a multiple of the sample weight on the weight compensator and use the where: The accuracy of this test method may be judged by comparing the results obtained from certi?
Six instruments were of the thermal conductivity hydrogen measurement system con? A number in parentheses indicates the year of last reapproval. National Institute of Standards and Technology.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. No other units of measurement are included in this standard.
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. Several models of commercial analyzers are available and presently in use in industry. The acceptance range for the veri? Sm, there is evidence that the repeatability of the particular instrument is not acceptable for use with this test method. Your comments ashm receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Analyze at least three reference material specimens to determine the calibration slope Note 8. Standard Test Method f The ILS used an acceptance criterion where aztm value fell within the allowable limits of the certi? Weigh to 6 0. 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. The user should determine and correct the cause, and repeat It is assumed that all who use this test method will be trained analysts capable of performing common laboratory procedures skillfully and safely.
The prediction interval is de? Astmm must be of an appropriate size to? Each has its own unique design characteristics and operational requirements. E Standard Reference Material under development: In this case instrument response must always be veri? Calculate the average and standard deviation s of these results. NOTE 2—Carrier gases vary by instrument model and include highpurity argon, nitrogen, and helium.
An alternate procedure can be implemented where this value should agree with the certi? 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. If the prediction interval does not encompass the certi?
Use a fresh crucible each time. This cannot be corrected by making adjustments to the instrument. Hydrogen present in the sample is released as molecular hydrogen into the?
NOTE 9—Some instruments have expanded computer capabilities that allow 1e447 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.
Summary of Test Method 4. Precision and Bias Calibration was performed utilizing a single calibration material NBS? 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. Material is in chip form.
In the absence of bias among the reference materials, the average result for this reference material should agree with the certi? Preparation of Apparatus ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. If your results are not comparable, investigate and correct the cause.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Results must be supported by acceptable preceding and subsequent veri? Indications that the sample has overheated while being worked may include discoloration of w1447 metal aetm the sample becoming too hot to handle without tools.
Last previous edition approved in as E — NOTE 16—If the analyzer does not offer these functions, astn the hydrogen content by the following method: