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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Already Subscribed to this document. 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. Your Alert Profile lists the documents that will be monitored.

Standards Subsctiption may be the perfect solution. Anumber in parentheses indicates the year of last reapproval. When Newton units of force are used, the force must be divided by the conversion factor 9.

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. 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.

Recommendations for microindentation testing can be found in Test Method F92 Current edition approved April 1, This standard is issued under the fixed designation E92; the number immediately following the designation indicates the year of original.

This standard astmm the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests. Originally approved in This standard is not included in any packages.

Standardization of Vickers and Knoop Indenters. 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.

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ASTM E92 – 17

When Newton units of force are used, the force must be divided by the conversion factor 9. 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.

This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests. Link to Active This link will always route to the current Active version of the standard.

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

Historical Version s – view previous versions of standard. Last previous edition approved in as E92— If the document is revised or amended, you will be notified by email. This standard is also available to be included in Standards Subscriptions. Last previous edition approved in as E92—82 which was withdrawn July and reinstated in February This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for 9e2 Vickers and Knoop hardness tests.

Today, the hardness numbers are internationally defined in terms adtm SI units, that asstm, the test force in Newtons N. Microindentation hardness tests also allow specific phases or constituents and regions or gradients too small for macroindentation hardness testing to be evaluated.

However, in practice, the most commonly used force units are kilogram-force kgf and gram-force gf. Today, the hardness numbers are internationally defined in terms of SI units, that is, the test force in Newtons N.

We have no amendments or corrections for this standard. Current edition approved Feb. Other materials may require special considerations, for example see C and C for ceramic testing. Other materials may require special considerations, for example see C and C asstm ceramic testing.

asym Vickers and Knoop Hardness Standardizing Machines. The significant differences between the two tests are the geometries of the respective indenters, the method of calculation of the hardness numbers, and that. This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests. This standard has been approved for use by agencies of the U.

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NOTE 1—The Vickers and Knoop hardness w92 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. However, because of the historical precedent and continued common usage, force values in gf and kgf units are provided for information and much asgm the discussion in this standard as well as the method of reporting the test results refers to these units. Proceed to Checkout Continue Shopping.

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Originally approved in While Committee E28 is primarily concerned with metallic materials, the test procedures described are applicable to other materials.

Need more than one copy? For isotropic materials, the two diagonals of a Vickers indentation asm equal in length.

ASTM E92 – 82() Standard Test Method for Vickers Hardness of Metallic Materials

Anumber in parentheses indicates the year of last reapproval. Subscription pricing is determined by: However, in 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. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the asstm of regulatory limitations prior to e922.