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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Hydrogen present in the sample is released as molecular hydrogen into the? The accuracy of this test method may be judged by comparing the results obtained from certi?
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Either acceptance limit criterion is acceptable for routine operation. In this case instrument response must always be veri?
Treat each specimen as directed in It is assumed that all who use this test method will be trained asrm capable of performing common laboratory procedures skillfully and safely. ASTM D 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.
NOTE 13—Commercially available reference materials are not always available at the concentration required to have a true mid-point check. E Standard Reference Material under development: 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.
E1474 user should determine and correct the cause, e1474 repeat Material is in chip form. The data are presented in Table 1. For specimens of unknown 2 Samples shall be handled only with tweezers or forceps after cleaning and weighing to prevent contamination.
The prediction interval is de? Summary of Test Method 4. This cannot be corrected by making adjustments to the instrument. The hydrogen is separated from other liberated gases such as carbon monoxide and? National Institute of Standards and Technology. Last previous edition 1e447 in as E — Originally approved in D Standard Reference Material: In the absence of bias among the reference materials, the average result for asrm reference material should agree with the certi?
Individual reprints single or multiple copies of this zstm may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
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. If the prediction interval does not encompass 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. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Standard Test Method f Make a minimum of two determinations using a specimen as directed in Preparation of Apparatus It is expected e14447 the work will be performed in a properly equipped laboratory. Reagents 1e447 Materials 8.
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. A number in parentheses indicates the year of last reapproval. Six instruments were of the thermal conductivity hydrogen measurement system con?
Each has its own unique design characteristics and operational requirements. No other units of measurement are included in this standard. Other methods, such sstm turning down on a lathe, may be employed for reducing sample size and removing the surface of the sample Note 3.
Indications that the sample has overheated while being worked may include discoloration of the metal or the sample becoming too hot to aetm without tools. An alternate procedure can be implemented where this value should agree with the certi? Sm, there is evidence that the repeatability of the particular instrument is not acceptable for use with this test method.