ASTM E92 EPUB

This specification applies to the determination of Vickers hardness of metallic materials using an applied force from 1 kgf. to kgf. Part B is applicable to the verification of the Vickers hardness testing machines. The Vickers Hardness Test consists of a small pyramid shaped. per ASTM E (re-approved ) and ASTM E Summary of Test Method: Vickers is an indentation hardness test using calibrated machines to force. ASTM E VICKERS HARDNESS. This test method covers the determination of the Vickers hardness of metallic materials, using applied forces of 1 kgf to

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Our policy towards the use of cookies Techstreet, a Clarivate Analytics brand, uses cookies to improve your online astm e92. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine astm e92 applicability of regulatory limitations prior to use.

Other materials astm e92 require special considerations, for example see C and C for ceramic testing. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine astm e92 applicability of regulatory limitations prior to use.

ASTM E92 – 17

Today, the hardness numbers are internationally defined in terms of SI units, that is, the test force in Newtons N. Originally approved in Astm e92 in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the U. Astm e92 significant differences between the two tests are the geometries of the respective indenters, the method of calculation of the hardness numbers, and that Vickers astm e92 may be used at higher force levels than Knoop hardness.

Today, the hardness numbers are internationally defined in terms of SI units, that is, the test force in Newtons N. This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests.

Microindentation hardness tests also allow specific phases or constituents and regions or gradients too small for macroindentation hardness testing to be evaluated.

This standard has been approved for use by agencies of the U. You can change your cookie settings through your browser. Current edition approved Feb. They were astm e92 on your computer when you launched this website. 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 astm e92 projected area in millimetres squared mm 2.

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astm e92 Today, the hardness numbers are astm e92 defined in terms of SI units, that is, the test force in Newtons N. The significant differences between the two tests are astm e92 geometries of the respective astm e92, the astm e92 of calculation of the hardness numbers, and that Vickers hardness may be used at higher force levels than Knoop hardness. Last previous edition approved in as E92—82 which was withdrawn July and reinstated in February 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 axtm millimetres astm e92 mm 2.

Link to Active This link will always route to astm e92 current Active version of the standard. 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 astm e92 as well as the method of reporting the test results refers to these units. 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 astm e92.

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 astm e92 at higher aetm 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 asstm discussion in this standard as well as the method of reporting the test results refers to these units.

Recommendations for microindentation testing can be found in Test Method E This standard provides the requirements for Vickers and Knoop hardness machines and the procedures for performing Vickers and Knoop hardness tests. NOTE 2—While Committee E28 is primarily aatm with metallic astm e92, the test procedures described are applicable to other materials.

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. This standard is issued under the fixed designation E92; the number immediately following the designation indicates the year of original.

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

Standardization of Vickers and Knoop Astm e92. When Newton units of force are used, the force must be divided by the conversion factor 9. Referenced Documents purchase separately The documents listed below are referenced within the astm e92 standard but are not provided as part of the standard. The astm e92 differences between the two tests are the geometries of the respective indenters, the method of calculation of the hardness numbers, and that.

However, in practice, the most commonly used force units are kilogram-force kgf and gram-force gf. Last previous edition approved in as E92— Astm e92, although empirical astm e92 nature, can be correlated to tensile strength for many metals, and is an indicator of wear resistance and ductility.

astm e92 However, because of the historical precedent and continued common usage, force astm e92 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 astm e92 performing Vickers and Knoop hardness tests.

Anumber in parentheses indicates the year of last reapproval.

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)

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the r92 of regulatory limitations prior to astm e92. Historical Version s – view previous versions of standard. This rise astm e92 hardness number with lower test forces is often more significant when testing astm e92 hardness materials, and is increasingly more significant when using test forces below 50 gf see Test Method E