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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Since all converted hardness values must be considered approximate, however, all converted hardness numbers shall be rounded in accordance with Practice E Appendix X7 contains equations converting determined hardness scale numbers to Vickers hardness numbers for copper, numbers to inclusive. Ball HR W Test coupon thicknesses ranged from approximately 0.

Therefore separate conversion tables are necessary for different materials. Principle of Method of Conversion 5.

Tempers ranged from annealed to extra hard for Typewith a smaller range of tempers for the other types. In table headings, kgf refers to total test force. Last previous edition approved in as E — 02e1. This standard has been approved for use by agencies of the Department of Defense.

Appendix X5 contains an equation converting determined Brinell hardness numbers to Rockwell B hardness numbers for austenitic steel plate in the annealed condition. An annealed metal of high capacity for strain hardening will harden much more in the test than will a cold-worked metal.

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.

The equations given in Annex A10 were developed at the time the Leeb hardness test was invented see Appendix X2. Link to Active This link will always route to the current Active version of the standard. D Ten-millimetre tungsten carbide ball.

Soft annealed metals have characteristic” sinking” type indentation contours when indenters of the ball type are used. These hardness conversion relationships are intended to apply particularly to the following: B Appendix X1 contains equations converting determined hardness scale numbers to Rockwell C hardness numbers for non-austenitic steels.

Due to inherent inaccuracies in the conversion process, the converted number should be rounded to the nearest whole number in accordance with Practice E 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.

Appendix X1 contains equations converting determined hardness scale numbers to Rockwell C hardness numbers for non-austenitic steels.

This is true of astmm brasses and low-carbon steels and irons. C Observed standard deviation of the interlaboratory test data about the indicated conversion line. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

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Since all converted hardness values must be considered approximate, however, all converted hardness numbers shall be rounded in accordance with Practice E This is because conversions can be affected by several factors, including the material alloy, grain structure, heat treatment, etc. The use of tungsten carbide balls will produce slightly different hardness results than steel balls. These hardness conversion relationships are intended to e140-007 particularly to the following: Related publications Share Embed Add to favorites Comments.

A number in parentheses indicates the year of last reapproval.

Appendix X4 contains equations converting determined hardness scale numbers to Vickers hardness numbers for cartridge brass. Methods for Hardness Determinations 3. 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. 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 e1400-7.

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. C Appendix X9 contains equations converting determined hardness scale numbers to Brinell numbers for wrought aluminum products.

Most Rockwell hardness numbers are presented to the nearest 0. Current edition approved April 1, 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. F Scale, kgf in. This is because conversions can be affected by several factors, including the material alloy, grain structure, heat treatment, etc.

NOTE 1—The comparative hardness test done to generate the conversion tables in this standard were preformed in past years using ASTM test methods in effect at the time of testing. An annealed 20 metal of high capacity for strain hardening will harden much e1140-07 in the test than will a cold-worked metal.

Originally approved in Signicance and Use 6. Differences in sensitivity within the range of a given hardness wstm for example, Rockwell B may be greater than between two different scales or types of instruments. Apparatus and Reference Standards 4. Astk 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.

B In table headings, kgf or asmt refers to total test force.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Tempers ranged from annealed to extra hard for Typewith a smaller range of tempers for the other types.

Most Rockwell hardness numbers are presented to the nearest 0. B Appendix X2 contains equations converting determined hardness numbers to Rockwell B hardness numbers for non-austenitic steels. Methods for Hardness Determinations 3.