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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The significant differences between the two tests are e29 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.

Microindentation hardness tests also allow specific phases or constituents and regions or ee92 too small for macroindentation hardness testing to be evaluated. When Newton units of force are used, the force must be divided by the conversion factor 9. Your Alert Profile lists the documents that will be monitored.

Today, the hardness numbers are internationally defined in terms of SI units, that is, the test force in Newtons N. The significant differences between the two tests are the geometries of the respective e922, the method of calculation of the hardness numbers, and that Vickers hardness may be used at higher force levels than Knoop hardness.

This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests. Originally approved in Standardization of Vickers and Knoop Indenters.

When Newton units of force are used, the force must be divided by the conversion factor 9. NOTE 2—While Committee E28 is primarily concerned with metallic materials, the test procedures described are applicable to other materials. Standards Subsctiption may be the perfect solution. This standard is also available aatm be included in Standards Subscriptions.

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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)

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. NOTE 2—While Committee E28 is primarily concerned with metallic materials, the test procedures described are applicable to other materials.

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.

The Vickers and Knoop hardness numbers were originally defined in terms of the test force in kilogram-force kgf and asttm surface area or projected area in millimetres squared mm 2. Today, the hardness numbers are internationally defined in terms of SI units, that is, the test force in Newtons N. When Newton units of force are used, the force must be divided by the conversion factor 9.

ASTM E92 – 17

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

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.

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However, in practice, the most commonly used force units are kilogram-force kgf and gram-force gf. Current edition approved Feb. As the voice of the U. 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.

Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Hardness, although empirical in nature, can be correlated to tensile strength for many metals, and is an indicator of wear resistance and ductility. 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.

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

This standard is issued under the fixed designation E92; the number immediately following the designation indicates the year of original. Last previous edition approved in as E92— Current edition approved April 1, 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.

However, in practice, the most commonly used force units are kilogram-force kgf e992 gram-force gf. Anumber in parentheses indicates the year of last reapproval.

Historical Version s – view previous versions of standard.

Anumber in parentheses indicates the year of last reapproval.