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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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Therefore separate conversion tables are necessary for different materials. Each type of hardness test is subject to certain errors, e14-07 if precautions are carefully observed, the reliability of hardness readings made on instruments of the indentation type will be found comparable.

CalamĂ©o – ASTM E

B Appendix X5 contains an equation converting f140-07 Brinell hardness numbers to Rockwell B hardness numbers for austenitic steel plate in the annealed condition. Due to inherent inaccuracies in the conversion process, the converted number should be rounded to the nearest whole number in accordance with Practice E Apparatus and Reference Standards 4.

Most Rockwell hardness numbers are presented to the nearest 0. B Appendix X7 contains equations converting determined hardness scale numbers to Vickers hardness numbers for copper, numbers to inclusive. The data in Zstm 10 was calculated from the Annex A10 equations.

C Appendix X9 contains equations converting determined hardness scale numbers to Brinell numbers for wrought aluminum products. No further reproductions authorized. Methods for Hardness Determinations 3.

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ASTM E140-07

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. Soft annealed metals have characteristic” sinking” type indentation contours when indenters of the ball type are used. Ball HR W It is necessary to base hardness conversions on comparative tests of similar materials that also have very similar mechanical properties. 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 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.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Originally approved in The Brinell hardness numbers in this conversion table are based on tests using a kgf force. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Differences in sensitivity within e410-07 range of a given hardness scale for example, Rockwell B may be greater than between two different scales or types of instruments.

A In table headings, kgf or gf refers to total test force. C The Brinell hardness numbers in parentheses are outside the range recommended for Brinell hardness testing in 8.

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Types aetm,, L, L,and The modulus of elasticity has been shown to inuence conversions at high hardness levels; and at low hardness levels conversions between hardness scales measuring depth and those measuring diameter are likewise inuenced by differences in the modulus of elasticity.

The use of tungsten carbide balls will produce slightly different hardness results than steel balls.

When the kgf force is used for the softer nickel and high-nickel alloys, these conversion relationships do not apply. Since all converted hardness values must be considered approximate, however, all converted hardness numbers shall be rounded in accordance with Practice E As higher forces are used, the increased strain raises the hardness atm an e140-7 that depends on the pretest capacity of the metal for strain e1400-7.

Link to Active This link will always route to the current Active version of the standard. 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 made on instruments of the indentation type will be found comparable.

B Appendix X6 contains equations converting determined hardness numbers to Rockwell C and Rockwell B hardness numbers for austenitic stainless steel sheet. Most Rockwell hardness numbers are presented to the nearest 0.