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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Microindentation hardness tests also allow specific phases or constituents and regions or gradients too small for macroindentation wstm testing to be evaluated. Last previous edition approved in as E92— Proceed to Checkout Continue Shopping. When Newton units of force are used, the force must be divided by the conversion factor 9. Current edition approved April 1, Anumber in parentheses indicates the year of last reapproval. However, in practice, the most commonly used force units are kilogram-force kgf and gram-force gf.

This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. It is the responsibility of the user of this standard xstm 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. Other materials may require special considerations, for example see C and C for ceramic testing.

ASTM E92 – 17

Please first log in with a verified email before subscribing to alerts. 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. 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 has been approved for use by agencies of the U. 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.

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Last previous edition approved in as E92—82 which was withdrawn July and reinstated in February Other materials may require special considerations, for example see C and C for ceramic testing.

ASTM E 《金属材料维氏及努氏硬度标准试验方法》美国标准 (英文版)

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. This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests.

Standardization of Vickers and Knoop Indenters. 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. Historical Version s – view previous versions of standard. Your Alert Profile lists the documents that will be monitored.

NOTE 2—While Committee E28 is primarily concerned astj metallic materials, the test procedures described are applicable to other materials. This standard is also available to be included in Standards Subscriptions.

This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests. 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.

However, in practice, the most commonly used force units are kilogram-force kgf and gram-force gf. 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. Originally approved in When Newton units of force are used, the force must be divided by the conversion factor 9. The significant differences between the two tests are the geometries of the respective indenters, the method of calculation of the hardness numbers, and that.

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Add to Alert PDF. 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. Need more than one copy? This rise in hardness number with lower test forces is often more significant when testing higher hardness materials, and is increasingly more significant when using test forces below 50 gf see Test Method E Subscription pricing is determined by: Originally approved in Today, the hardness numbers are internationally defined in terms of SI units, that is, the test force in Newtons N.

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 Vickers hardness may be used at higher force levels than Knoop hardness. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. NOTE 2—While Committee E28 is primarily concerned with metallic materials, the test procedures described are applicable to other materials. 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.

For isotropic materials, the two diagonals of a Vickers indentation are equal awtm length. When Newton units of force are used, the force must be divided by the conversion factor 9. You may delete a document from your Alert Profile at any time.

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. As the voice ashm the U.

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