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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Due to inherent inaccuracies in the conversion process, the converted number should be rounded to asmt nearest whole number in accordance with Practice E 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 Appendix X9 contains equations converting determined hardness scale numbers to Brinell numbers for wrought aluminum astj.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. Tempers ranged from annealed e140-70 extra hard for Typewith a smaller range of tempers for the other types.
e104-07 This axtm on strain-hardening characteristics can be demonstrated by the Rockwell scales T, Sstm, T, F, and B, in which forces ranging from 15 to kgf are applied on a in. B Appendix X3 contains equations converting determined hardness scale numbers to Vickers hardness numbers for nickel and high-nickel alloys.
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 Appendix X6 contains equations converting determined hardness numbers to Rockwell C and Rockwell B hardness numbers for austenitic stainless steel sheet.
Because of the wide range of variation among different materials, it is not possible to state condence limits for the errors in aastm a conversion chart. These recommendations are designed to limit impression diameters to the range from 2.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Active view current version of standard. B In table headings, kgf or gf refers to total test force.
This is because conversions can be affected by several factors, including the material alloy, grain structure, heat treatment, etc. B Appendix X5 contains an equation converting determined Brinell hardness numbers to Rockwell B hardness numbers for austenitic steel plate in the annealed condition. These xstm conversion relationships are intended to apply particularly to the following: TABLE 3 Continued Vickers Adtm 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.
A number in parentheses indicates the year of last reapproval. Reporting of Hardness Numbers 7. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. B Appendix X1 contains equations converting determined hardness scale numbers to Rockwell C hardness numbers for non-austenitic steels.
Link to Active This link will always route to the current Active version of the standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Since all converted hardness values must be considered approximate, however, all converted hardness numbers shall be rounded in accordance with Practice E 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. In table headings, kgf refers to total test force.
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. 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.
These hardness conversion relationships are intended to apply particularly to the following: 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.
Active view current version of standard Translated Standard: Approved April 1, 1 Table 9 spacing was corrected. 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.
C Appendix X9 contains equations converting determined hardness scale numbers to Brinell numbers for wrought aluminum products.
Calaméo – ASTM E
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, sstm 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 balls.
A In table headings, kgf or gf refers to total test force. These hardness conversion relationships are intended to apply particularly to the following: