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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B Appendix X1 contains equations converting determined hardness scale numbers to Rockwell C hardness numbers for non-austenitic steels. TABLE 3 Continued Vickers Hardness Number Knoop Hardness Number Vickers Indenter 1,5,10,kgf HV Knoop Indenter and gf HK A In table headings, kgf or gf refers to total test force.
The conversion values, whether from the tables or calculated from the equations, are only approximate and may be inaccurate for specific application. Since all converted hardness values must be considered approximate, however, awtm converted hardness numbers shall be rounded in accordance with Practice E Most Rockwell hardness numbers are presented to the nearest 0.
Differences 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. Your Alert Profile lists the documents that will be monitored.
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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Due to inherent inaccuracies in the conversion process, the converted number should be rounded to the nearest whole number in accordance with Practice E This is because conversions can be affected by several factors, including the material alloy, grain structure, heat treatment, etc.
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.
The equations given in Annex A1- Annex A9 were developed from the data in Tables 1 to 9, respectively. When the kgf force is used for the softer nickel and high-nickel alloys, these conversion relationships do not apply. Subscription pricing is determined by: For example, currently both the Rockwell and Brinell hardness standards Test MethodE10 and E18, respectively allow or require the use of tungsten carbide ball indenters; however, all of the ball scale Rockwell hardness tests HRB, HR30T, etc.
C The Brinell hardness numbers in parentheses are outside the range recommended for Brinell hardness testing in 8. Most Rockwell hardness numbers are presented to the nearest 0. E Brinell hardness numbers in parentheses are above the maximum hardness recommended by Test Method E10 and are presented for information only.
Current edition approved Jan.
Even in the case of a table established for a single material, such as the table for cartridge brass, some error is involved depending on composition and methods of ashm. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Need more than one copy? D Ten-millimetre tungsten carbide ball.
The Brinell hardness numbers in this conversion table are based on tests using a kgf force. Historical Version s – view previous versions of standard.
C Appendix X8 contains equations converting determined hardness scale numbers to Vickers hardness numbers for alloyed white irons. 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.
The equations given in Annex A10 were developed at the time the Leeb hardness test was invented see Appendix X2. These hardness conversion relationships are intended to apply particularly to the following: Since all converted hardness values must be considered approximate, however, all converted Rockwell hardness numbers shall be rounded to the nearest whole number in accordance with Practice E Apparatus asgm Reference Standards 4.
Such values are shown for comparative purposes only, where comparisons may be desired and the recommended machine and scale are not available. B Appendix X3 contains equations converting determined hardness scale numbers to Vickers hardness numbers for nickel and high-nickel alloys.
Link to Active This link will always route to the current Active version of the standard. B Appendix X6 contains equations converting determined hardness numbers to Rockwell C and Rockwell B hardness numbers for austenitic stainless steel sheet.
Link to Active This link axtm always route to the current Active version of the standard. Proceed to Checkout Continue Shopping.
Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Therefore separate conversion tables are necessary for different materials.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. A In table wstm, kgf or gf refers to total test force. 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. 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.
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