ASTM E92 PDF

This standard is issued under the fixed designation E92; the number immediately 1 These test methods are under the jurisdiction of ASTM Committee E28 on. Astm e92 Vickers Hardness of Matallic Materials – Free download as PDF File . pdf), Text File .txt) or read online for free. ASTM E – Vickers Hardness of Metallic Materials(1) – Download as PDF File .pdf), Text File .txt) or read online.

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You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. The significant differences between the two tests are the geometries of the respective indenters, the method of calculation of the hardness numbers, and that Vickers hardness may be used at higher force levels than Knoop hardness.

NOTE 2—While Committee E28 is primarily concerned with metallic materials, the test procedures described are applicable to other materials. You may delete a document from your Alert Profile at any time.

Anumber in parentheses indicates the year of last reapproval. Please first log in with a verified email before subscribing to alerts. Other materials may require special considerations, for example see C and C for ceramic testing. Microindentation hardness tests also allow specific phases or constituents and regions or gradients too small for macroindentation hardness testing to be evaluated. However, because of the historical precedent and continued common usage, force values in gf and kgf units are provided for information and much of the discussion in this standard as well as the method of reporting the test results refers to these units.

Please first verify your email before subscribing to alerts. Hardness, although empirical in nature, can be correlated to tensile strength for many metals, and is an indicator of wear resistance and ductility. Hence, the Knoop hardness test is very useful for evaluating hardness gradients since Knoop indentations can be made closer together than Vickers indentations by orienting the Knoop indentations with the short diagonals in the direction of the hardness gradient.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Other materials may require special considerations, for example see C and C for ceramic testing. Subscription pricing is determined by: This standard is issued under the fixed designation E92; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. For isotropic materials, the two diagonals of a Vickers indentation are equal in length.

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The significant differences between the two tests are the geometries of the awtm indenters, the method of calculation of the hardness numbers, and that. However, because of the historical precedent and continued common usage, force values in gf and kgf units are provided for information and much of the discussion in this standard as well as the method of reporting the test results refers to these units.

Need more than one copy? Standardization of Vickers and Knoop Indenters.

Today, the hardness numbers are internationally defined in terms of Asym units, that is, the test force in Newtons N. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory zstm prior to use. If the document is revised or amended, you will be notified by email. However, in practice, the most commonly used force units are kilogram-force kgf and gram-force gf.

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ASTM E92 – 17

Recommendations for microindentation testing can be found in Test Method E Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Vickers and Knoop Hardness Standardizing Machines.

When Newton units of force are used, the force must be divided by the conversion factor 9. NOTE 1—The Vickers and Knoop hardness numbers were originally defined in terms of the test force in kilogram-force kgf and the surface area or projected area in millimetres squared mm 2. This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests.

This standard is issued under the fixed designation E92; the number immediately following the designation indicates the year of original. This standard has been approved for use by agencies of the Ast. While Committee E28 is primarily concerned with metallic materials, the test procedures described are applicable to other materials.

ASTM E – Standard Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials

Originally approved in This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests. Historical Version s – view previous versions of standard. Today, the hardness numbers are internationally defined in terms of SI units, that is, the test force in Newtons N. This standard is also available to be included in Standards Subscriptions.

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However, atsm practice, the most commonly used force units are kilogram-force kgf and gram-force gf. However, because of the historical precedent and continued common usage, force values in gf and kgf units are provided for information and much of the discussion in this standard as well as the method of reporting the test results refers to these units.

Other materials may require special considerations, for example see C and C for ceramic testing. Standards Subsctiption may be the perfect solution. This standard is not included in any packages. This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests. The Vickers and Knoop hardness numbers were originally defined in terms of the test force in kilogram-force kgf asrm the surface area or projected area in millimetres squared mm 2.

NOTE 1—The Vickers and Knoop hardness numbers were originally defined in terms of the test axtm in kilogram-force kgf and the surface area or projected area in millimetres asgm mm 2. sstm

The significant differences between the two tests are the geometries of the respective indenters, the method of calculation of ast, hardness numbers, and that Vickers hardness may be used at higher force levels than Knoop hardness.

Current edition approved April 1, It is the responsibility of the user of this standard f92 establish appropriate safety and health practices and determine the asrm of regulatory limitations prior to use. Your Alert Profile lists the documents that will be monitored. Proceed to Checkout Continue Shopping. When Newton units of force are used, the force must be divided by the conversion factor 9.

Anumber in parentheses indicates the year of last reapproval. Last previous edition approved in as E92—82 which was withdrawn July and reinstated in February