Active view current version of standard. The Brinell hardness numbers in this conversion table are based on tests using a kgf force. C Appendix X8 contains equations converting determined hardness scale numbers to Vickers hardness numbers for alloyed white irons. Link to Active This link will always route to the current Active version of the standard. Most Rockwell hardness numbers are presented to the nearest 0.
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No further reproductions authorized. NOTE 2—The use of hardness scales for hardness values shown in parentheses is not recommended since they are r140 the ranges recommended for accuracy.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at e1440faxor service astm. Current edition approved Jan. Your Alert Profile lists the documents that will be monitored.
ASTM Hardness Conversion Chart
B Appendix X1 contains equations converting determined hardness scale numbers to Rockwell C hardness numbers for non-austenitic steels. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
D Ten-millimetre tungsten carbide ball.
The Brinell hardness numbers in this conversion table are based on tests using a kgf force. Differences in sensitivity within the range of a given hardness scale for example, Rockwell B may be e40 than between two different scales or types of instruments.
The data in Table 10 was calculated from the Annex A10 equations. This is because conversions can be affected by several factors, including the material alloy, grain structure, heat treatment, etc.
C Appendix X8 contains equations converting determined hardness scale numbers to Vickers hardness numbers for alloyed white irons. The use of tungsten carbide balls will produce slightly different hardness results than steel balls.
It is necessary to base hardness conversions on comparative tests of similar materials that also have very similar mechanical properties. Even in the case of a table established for a aetm material, such as the table for cartridge brass, some error is involved depending on composition and methods of processing. Due to inherent inaccuracies in the conversion process, the converted number should be rounded to the nearest whole number in accordance with Practice E S140 in sensitivity within the range of a given hardness scale for example, Rockwell B may be greater than between two different scales or types of instruments.
This standard has been approved for use by agencies of the Department of Defense. Tempers ranged aatm annealed to extra hard for Typewith a smaller range of tempers for the other types. Historical Version s - view previous versions of standard.
Calaméo - ASTM E
E Brinell hardness numbers in parentheses are above the maximum hardness recommended by Test Method E10 and are presented for information only. Related publications Share Embed Add to favorites Comments.
B Appendix X4 contains equations converting determined hardness scale numbers to Vickers hardness numbers for cartridge brass. Most Rockwell hardness numbers are presented to e1400 nearest 0. Standards Subsctiption may be the perfect solution. 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.
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.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. When the kgf force is used for the softer nickel and high-nickel alloys, these conversion relationships do not apply. B Appendix X3 contains equations converting determined hardness scale numbers to Vickers hardness numbers for nickel and high-nickel alloys.
These hardness conversion relationships are intended to apply particularly to the following: B Appendix X5 contains an equation converting determined Brinell hardness numbers to Rockwell B hardness numbers for austenitic steel plate in the annealed condition.
Indentation hardness is not a single fundamental property but a combination of properties, and the contribution of each to the hardness number varies with the type of test. These hardness conversion relationships are intended to apply particularly to the following: This standard is not included in any packages.