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GB/T 21838.2-2022 English PDF

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GB/T 21838.2-2022: Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 2: Verification and calibration of testing machines
Status: Valid

GB/T 21838.2: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 21838.2-2022	English	539	Add to Cart	5 days [Need to translate]	Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 2: Verification and calibration of testing machines	Valid	GB/T 21838.2-2022
GB/T 21838.2-2008	English	839	Add to Cart	4 days [Need to translate]	Metallic materials -- Instrumented indentation test for hardness and materials parameters -- Part 2: Verification and calibration of testing machines	Obsolete	GB/T 21838.2-2008

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Standard similar to GB/T 21838.2-2022

GB/T 17394.2 GB/T 16825.1 GB/T 17394.3 GB/T 16826 GB/T 21838.3 GB/T 21838.4

Basic data

Standard ID	GB/T 21838.2-2022 (GB/T21838.2-2022)
Description (Translated English)	Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 2: Verification and calibration of testing machines
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	N71
Word Count Estimation	27,269
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration

GB/T 21838.2-2008: Metallic materials -- Instrumented indentation test for hardness and materials parameters -- Part 2: Verification and calibration of testing machines

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Metallic materials Instrumented indentation test for hardness and materials parameters Part 2. Verification and calibration of testing machines ICS 19.060; 77.040.10 N71 National Standards of People's Republic of China Instrumented pressed metal material hardness and materials parameters Tracking Test Part 2. Verification and calibration of testing machines (ISO 14577-2.2002, MOD) Posted 2008-06-20 2009-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Please note that some of the content of this standard may involve patents, the issuing authority of this standard should not bear the responsibility to identify these patents. GB/T 21838 "metal hardness and materials parameters - Instrumented indentation test" is divided into four parts. --- Part 1. Test methods; --- Part 2. Verification and calibration of testing machines; --- Part 3. Calibration of reference blocks; --- Part 4. Test methods for metallic and non-metallic coating layer. This section GB/T 21838 Part 2. The partial modification of international standard ISO 14577-2.2002 "Instrumented indentation test for the first metal material hardness and materials parameters Part 2. Verification and calibration of testing machines "(first edition in English). This part is based on the ISO 14577-2.2002 drafted using the translation method, in terms of technical content and structure of the text with ISO 14577-2. 2002 consensus, but in accordance with the relevant provisions of the preparation of standards made the following editorial changes. --- With "GB/T 21838 in this section," instead of "this part of ISO 14577"; "." --- With the Chinese instead of English usual decimal notation using decimal notation, ""; --- Re-write the foreword, instead of ISO 14577-2.2002 Foreword; --- In Chapter 2, "Normative references" in direct reference to the ISO 14577-2.2002 international standard referenced in the corresponding China's national standard; --- In the "Normative references" added the national standard "GB/T 21838.4-2008 metal hardness and material parameters The instrumented indentation test - Part 4. Test methods for metallic and non-metallic cover layer (ISO 14577-4.2007, MOD); --- 4.5.1 adds "See GB/T 21838.4-2008 Appendix A"; --- The corresponding article 4.5.1 modified position in the text to be identified by a single vertical line. Appendix B to this part of the normative appendix, Appendix A, Appendix C, Appendix D is an informative annex. This part is proposed by China Machinery Industry Federation. This part of the National Technical Committee of Standardization Testing Machine (SAC/TC122) centralized. This section is responsible for drafting unit. Changchun Testing Machine Institute. Participated in the drafting of this section. Shanghai nano-technology incubators, Shanghai Research Institute of Materials, Iron and Steel Research Institute, Shenzhen, surface material Analysis of the test center. The main drafters of this section. Liu Intelligence, Pakistan made the sea, Wang Bin, TESTING AND Yang Hongwei. This section first release.

Introduction

The classic definition of hardness is a material resistant to other hard material capable of producing permanent indentation indentation. Rockwell, Vickers and Brinell test results obtained when the test is determined after removing the test force. Thus, ignoring the indentation elastic deformation under the indenter action Impact. GB/T 21838 formulation, allows users to plastic and elastic deformation of the material through research the relationship between force and deformation To assess the material indentation. Through the entire cycle of monitoring and removal of the test force, capable of measuring the hardness value equivalent to traditional hardness values. Importance is also capable of measuring such as indentation modulus and elastic - plastic hardness and some extra material properties, without the use of an optical method Indentation measurement, these values \u200b\u200bcan be calculated. GB/T 21838 to the development of the data after the various tests carried out in-depth analysis. Instrumented pressed metal material hardness and materials parameters Tracking Test Part 2. Verification and calibration of testing machines

1 Scope

This section GB/T 21838 specifies the instrumented indentation test performed in accordance with GB/T 21838.1 and calibration of testing machines method. This section describes the direct test method for detecting testing machine main function and suitable for the determination of indirect test method test machine repeatability. In addition to straight Connection test method, the indirect method is also used to test the use of the tester routine periodic inspection. For each test method shall be separately tester indirect test. This section also applies to portable tester.

2 Normative references

The following documents contain provisions which, through reference GB/T 21838 in this section constitute provisions of this section. For dated references Documents, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encourage the present section Research on the parties to reach an agreement to use the latest versions of these documents. For undated references, the latest edition of In this section. GB/T 230.2 Metallic Rockwell hardness test - Part 2. hardness (A, B, C, D, E, F, G, H, K, N, T scale) test And calibration [GB/T 230.2-2002, ISO 6508-2.1999, Metalicmaterials-Rockwelhardnesstest-Part 2. Verificationandcalibrationoftestingmachines (scalesA, B, C, D, E, F, G, H, K, N, T), MOD] GB/T 7997 Carbide Vickers hardness test method (GB/T 7997-1987, eqv ISO 3878. 1983) GB/T 13634 uniaxial testing machines standard dynamometer calibration (GB/T 13634-2008/ISO 376.2004, ISO 376.2004, Metalicmaterial-Calibrationofforce-provinginstrumentsusedfortheverificationofuni- axialtestingmachines, IDT) GB/T Instrumented indentation test - Part 1 21838.1-2008 metal material hardness and materials parameters. Test methods (ISO 14577-1.2002, MOD) Instrumented indentation test - Part 3 GB/T 21838.3-2008 metal hardness and materials parameters. Calibration block (ISO 14577-3.2002, MOD) GB/T Instrumented indentation test - Part 4 21838.4-2008 metal material hardness and materials parameters. metal and nonmetal Test methods for coating layer (ISO 14577-4.2007, MOD) ISO GUM.1995 Guide to the Expression of Uncertainty in Measurement

3 General requirements

3.1 ready Test machine should be designed to be tested by the following method. Preceded by checking the inspection and calibration of the testing machine to ensure that it meets the requirements of 3.2 to 3.4. 3.2 Installation conditions Installation test machine should be easy to operate, installation environment shall meet the requirements of this standard and GB/T 21838.1 specified as possible, in full Foot GB/T 21838.3 requirements. Vibration test machine should be prevented. For microscopic and nanometer range test, the test machine should also prevent air

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