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GB/T 38751-2020 English PDF

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US$448.00 · In stock
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GB/T 38751-2020: General rules of hardness test for heat treated parts
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38751-2020	448	Add to Cart	1 days	General rules of hardness test for heat treated parts	Valid

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Basic data

Standard ID: GB/T 38751-2020 (GB/T38751-2020)
Description (Translated English): General rules of hardness test for heat treated parts
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J36
Classification of International Standard: 25.200
Word Count Estimation: 24,275
Date of Issue: 2020-04-28
Date of Implementation: 2020-11-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38751-2020: General rules of hardness test for heat treated parts

---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.
General rules of hardness test for heat treated parts ICS 25.200 J36 National Standards of People's Republic of China General rules for hardness inspection of heat-treated parts 2020-04-28 release 2020-11-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Selection principle of hardness test method 2 5 Sample to be tested 4 6 Inspection environment 4 7 Personnel requirements 4 8 Instrument Management 5 9 Hardness test 5 10 Test results and hardness values 6 11 Inspection report and report out 6 12 Uncertainty assessment 7 Appendix A (informative appendix) Different hardness test methods and scope of application (limited to steel parts) 8 Appendix B (Normative Appendix) Hardness Test Method and Minimum Thickness Allowed for the Part to be Tested 9 Appendix C (normative appendix) Curved surface hardness correction value for different hardness inspection methods 15 Appendix D (informative appendix) Hardness value representation of different inspection methods 21

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Technical Committee for Standardization of Heat Treatment (SAC/TC75). This standard was drafted by. Jiangsu Fengdong Heat Treatment and Surface Modification Engineering Technology Research Co., Ltd., Beijing Electromechanical Research Institute Co., Ltd., Tianjin Heat Treatment Research Institute Co., Ltd., Zhuzhou CRRC Tianli Forging Co., Ltd., Shanghai Volkswagen Powertrain Co., Ltd., Changzhou New District River Hai Heat Treatment Engineering Co., Ltd., Zhuhai Gree Electric Appliance Co., Ltd., Xi'an Flett Heat Treatment Co., Ltd. The main drafters of this standard. Shi Yousen, Li Qiao, Wang Qin, Song Baojing, Su Liwu, Li Peng, Yin Heping, Hu Yusheng, Chen Miao, Wang Anmin and Bi Geping. General rules for hardness inspection of heat-treated parts

1 Scope

This standard stipulates the principles for selecting hardness testing methods for heat-treated parts, samples to be tested, testing environment, personnel requirements, instrument management, and hardness testing Contents of inspection, inspection result and hardness value indication, inspection report and report report, uncertainty evaluation. This standard applies to the hardness inspection of heat-treated metal materials. You can also refer to the implementation of the portable hardness timer.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document. GB/T 230.1 Rockwell hardness test of metallic materials Part 1.Test method GB/T 230.2 Rockwell hardness test of metallic materials Part 2.Hardness tester (A, B, C, D, E, F, G, H, K, N, T scale) Inspection and calibration GB/T 230.3 Rockwell hardness test of metal materials Part 3.Standard hardness blocks (A, B, C, D, E, F, G, H, K, N, T Scale) calibration GB/T 231.1 Brinell hardness test of metallic materials Part 1.Test method GB/T 231.2 Brinell hardness test of metallic materials Part 2.Inspection and calibration of hardness tester GB/T 231.3 Brinell hardness test of metallic materials Part 3.Calibration of standard hardness blocks GB/T 1172 ferrous metal hardness and strength conversion value GB/T 4340.1 Metallic materials Vickers hardness test Part 1.Test method GB/T 4340.2 Vickers hardness test of metallic materials. Part 2.Inspection and calibration of hardness testers GB/T 4340.3 Vickers hardness test of metallic materials. Part 3.Calibration of standard hardness blocks GB/T 4341.1 Shore hardness test of metallic materials Part 1.Test method GB/T 4341.2 Shore Hardness Test of Metallic Materials Part 2.Inspection of Hardness Tester GB/T 4341.3 Shore Hardness Test of Metallic Materials Part 3.Calibration of Standard Hardness Blocks GB/T 7232 Terminology of metal heat treatment process GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values GB/T 13313 Roller Shore and Leeb Hardness Test Methods GB/T 17394.1 Metallic materials Leeb hardness test Part 1.Test method GB/T 17394.2 Metallic materials Leeb hardness test Part 2.Inspection and calibration of hardness tester GB/T 17394.3 Metallic materials Leeb hardness test Part 3.Calibration of standard hardness blocks GB/T 18449.1 Metallic material Knoop hardness test Part 1.Test method GB/T 18449.2 Metallic material Knoop hardness test Part 2.Inspection and calibration of hardness tester GB/T 18449.3 Metallic materials Knoop hardness test Part 3.Calibration of standard hardness blocks GB/T 33362 Conversion of hardness value of metal materials

3 Terms and definitions

The terms and definitions defined in GB/T 7232 and the following apply to this document. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 38751-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 38751-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically in 24 hours. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 38751-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 38751-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.