ASTM E Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial. Convert documents to beautiful publications and share them worldwide. Title: ASTM E, Author: maria hilario, Length: 21 pages, Published: Hardness Conversion per ASTM E, Strength per ASTM A, See bottom half of table. Hardness C. Hardness Conversion Ta rdness Conversion Table.
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Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. This is true of yellow brasses and low-carbon steels and irons. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.
No further reproductions authorized. Therefore, the user is cautioned to consider these differences and to keep in mind the approximate nature of these conversions when applying them to the results of tests using tungsten carbide balls.
A number in parentheses indicates the year of last reapproval. This is because conversions can ashm affected by several factors, including the material alloy, grain structure, heat treatment, etc.
Active view current version of standard. It is recommended that hardness conversions be applied primarily to values such as specification limits, which are established by agreement or mandate, and that the conversion of test data be avoided whenever possible see Note 1.
Add to Alert PDF. These hardness conversion relationships are intended to apply particularly to the following: As higher forces are used, the increased strain raises the hardness by an amount that depends on the pretest capacity of the metal for strain hardening. Because of the wide range of variation among different materials, it is not possible to state confidence limits for the errors in using a conversion chart.
NOTE 2—The use of hardness scales for hardness values shown in parentheses is not recommended since they are beyond the ranges recommended for accuracy. The conversion values, whether from the tables or calculated from the equations, are only approximate and may be inaccurate for specific application.
The use of tungsten carbide balls will produce slightly different hardness results than steel balls. D These Scleroscope hardness conversions are based on Vickers—Scleroscope hardness relationships developed from Vickers hardness data provided by the National Bureau of Standards for 13 steel reference blocks, Scleroscope hardness values obtained on these blocks by the Shore Instrument and Mfg.
Link to Active This link will always route to the current Active version of the standard. Types,L, L,and Permission rights to photocopy the standard may also be secured from the ASTM website www. Each type of hardness test is subject to certain errors, but if precautions are carefully observed, the reliability of hardness readings made on instruments of the indentation type will be found comparable.
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Related publications Share Embed Add to favorites Comments. When the kgf force is used for the softer nickel and high-nickel alloys, these conversion relationships do not apply. The equations given in Annex A1- Annex A9 were developed from the data in Tables 1 to 9, respectively.
Users of this standard are expressly advised that determination of the validity of any aetm patent rights, and the risk of infringement of such rights, are entirely their own responsibility. It is necessary to base hardness conversions on comparative tests of similar materials that also have very similar mechanical properties.
These hardness conversion relationships are intended to apply particularly to the following: Each type of hardness test is subject to certain errors, but if precautions are carefully observed, the reliability of hardness readings e10 on instruments of the indentation type will be found comparable.
This standard is also available to be included in Standards Subscriptions. Tempers ranged from annealed to extra hard for Typewith aastm smaller range of tempers for the other types.
This standard is not included in any packages. Since all converted hardness values must be considered approximate, however, all converted hardness numbers shall be rounded in accordance with Practice E An annealed metal of high capacity for strain hardening will harden much more in the test than will a cold-worked metal.
Each type of hardness test is subject to certain errors, but if precautions are carefully observed, the reliability of hardness readings made on instruments of the indentation type will be found comparable. This standard has been approved for use by agencies of the Department of Defense.
Current edition approved Jan. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Historical Version s – view previous versions of standard. 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. C Appendix X9 contains equations converting determined hardness scale numbers to Brinell numbers for wrought aluminum products.
Your Alert Profile lists the documents that will be monitored. Indentation hardness is not a single w140 property but xstm combination of properties, and the contribution of each to the hardness number varies with the type of test.
E Brinell hardness numbers in parentheses are above the maximum hardness recommended by Test Method E10 and are presented for information only. NOTE 2—Hardness conversion values for other metals based on comparative test on similar materials having similar mechanical properties will be added to this standard as the need arises.