ASTM E – Free download as PDF File .pdf), Text File .txt) or read online permitted without license from IHS Not for Resale, 05/24/ MDT. This standard is issued under the fixed designation E; the number 1 These conversion tables are under the jurisdiction of ASTM. Buy ASTM E HARDNESS CONVERSION TABLES FOR METALS RELATIONSHIP AMONG BRINELL HARDNESS, VICKERS.
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Hardness Converter ASTM E140-07 ISO 18265:2003 | Trelleborg
Signicance and Use 6. This is because conversions can be affected by several factors, including the material alloy, grain structure, heat treatment, etc. C Appendix X9 contains equations converting determined hardness scale numbers to Brinell numbers for wrought aluminum products. Originally approved in asfm No further reproductions authorized.
E — 05e1 Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Supercial Hardness, Knoop Hardness, and Scleroscope Hardness1 This standard is issued under the xed designation E ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
Hardness Converter ASTM E ISO | Trelleborg
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 processing.
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.
Ball HR W Each type of hardness test is subject to certain errors, but if precautions are carefully observed, ee140-07 reliability of hardness readings made on instruments of the indentation type will be found comparable. Methods for Hardness Determinations 3. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
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.
B Appendix X4 contains equations converting determined hardness scale numbers to Vickers hardness numbers for cartridge brass. 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. The use of tungsten e14007 balls will produce slightly different hardness results than steel balls.
Such values are shown for comparative purposes only, where comparisons may be desired and the recommended machine and scale are not available. When the kgf force is used for the softer nickel and high-nickel alloys, these conversion relationships do not apply.
Types,L, L,and For example, an annealed iron and a cold-rolled aluminum alloy may have hardnesses of 71 and 72 HR 15T, respectively.
Apparatus and Reference Standards 4. Your comments will receive careful consideration at a meeting of the e410-07 technical committee, which you may attend. On the other hand, heavily cold-worked metals have sharp “ridging” type indentations. 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.
Therefore separate conversion tables are necessary for different materials.
C Observed standard deviation of the interlaboratory test data about the indicated conversion line. Permission rights to photocopy the standard may also be secured from the ASTM website www. C The Brinell hardness numbers in parentheses are outside the range recommended for Brinell hardness testing in 8. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Link to Active This link will always route to the current Active version of the standard.
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. C Appendix X8 contains equations converting determined hardness scale numbers to Vickers hardness numbers for alloyed white irons.
Soft annealed metals have characteristic” sinking” type indentation contours when indenters of the ball type are used. Originally approved in The Brinell hardness numbers in this conversion table are based on tests using a kgf force.