GB/T 6525-2019 English PDF

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GB/T 6525-2019: Determination of compression strength for sintered metal materials at room temperature
Status: Valid

GB/T 6525: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6525-2019	199	Add to Cart	3 days	Determination of compression strength for sintered metal materials at room temperature	Valid
GB/T 6525-1986	199	Add to Cart	2 days	Sintered metal materials. Determination of compression strength at room temperature	Obsolete

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Basic data

Standard ID: GB/T 6525-2019 (GB/T6525-2019)
Description (Translated English): Determination of compression strength for sintered metal materials at room temperature
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H22
Classification of International Standard: 77.040.10
Word Count Estimation: 10,126
Date of Issue: 2019-06-04
Date of Implementation: 2020-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 6525-2019: Determination of compression strength for sintered metal materials at room temperature

---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.
Determination of compression strength for sintered metal materials at room temperature ICS 77.040.10 H22 National Standards of People's Republic of China Replace GB/T 6525-1986 Determination of compressive strength of sintered metal materials at room temperature Published on.2019-06-04 2020-01-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 6525-1986 "Determination of compressive strength of sintered metal materials at room temperature", compared with GB/T 6525-1986, In addition to editorial changes, the main technical changes are as follows. --- Added normative references (see Chapter 2); --- Added terms and definitions (see Chapter 3); --- "Record the corresponding load or draw the stress-strain diagram (load-deformation map)" to "record the corresponding load-deformation map or should Force-strain diagram" (see Chapter 4, Chapter 1 of the 1986 edition); --- Added a description of the test temperature (see Chapter 4); --- Revised sample size, preparation and defects (see Chapter 5, Chapter 2 of the 1986 edition); --- Clearly the accuracy of the test machine and extensometer is 1 or better, and the "parallelism of the surface of the pad is not lower than 0.01mm" is adjusted to "the parallelism tolerance of the surface of the pad is 0.01mm" (see Chapter 6, Chapter 3 of the 1986 edition); --- Increase strain rate control requirements (see 7.4, 4.4 of 1986); ---Delete the "pointer method", change the "yield point" to "compressed yield strength", "yield load" to "compressed yield load", "yield strength" Change to "specified plastic compression strength", change the stress intensity symbol "ρ" to "R", and change the strength unit "N/mm2" to "MPa" (see Chapter 8, Chapter 5 of the 1986 edition); --- Adjusted the content of the test report (see Chapter 9, Chapter 6 of the 1986 edition). This standard was proposed by the China Nonferrous Metals Industry Association. This standard is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243). This standard is drafted by. Iron and Steel Research Institute, Shenzhen Yingcheng Technology Co., Ltd., Central South University, Western Baode Technology Limited. The main drafters of this standard. Luo Zhiqiang, Dong Shasha, Li Jikang, Liu Long, Zhang Yue, Wang Shouren, Dong Lingfeng. The previous versions of the standards replaced by this standard are. ---GB/T 6525-1986. Determination of compressive strength of sintered metal materials at room temperature

1 Scope

This standard specifies the method for determining the compressive strength of sintered metal materials at room temperature. This standard applies to the determination of room temperature compressive strength of machined or non-machined sintered metal materials (except hard alloys).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 16825.1 Inspection of static single-axis testing machines - Part 1 . Examination and testing of tensile and/or pressure testing machines calibration

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Compressive yield strength compressiveyieldstrength Rs The constant stress at which the sample exhibits a significant yield when compressed or the minimum stress at the first drop. 3.2 Prescribed plastic compressive strength proofstrengthofplasticcompression R0.2 The compressive stress corresponding to the plastic compressive strain of the sample is 0.2%. 3.3 Compressive strength compressivestrength Rd For brittle materials, the specimen is pressed to the maximum compressive stress during the failure process; For a plastic material that does not break in a burst form during compression, the compressive strength is a compressive stress under a specified strain condition.

4 Principle

Place the sample in the center of the adjustable pad and start the test machine to continuously and evenly withstand the axial load until the crack or regulation The amount of deformation, record the corresponding load-deformation map or stress-strain diagram. Note. Unless otherwise specified, the test is generally carried out at a temperature ranging from 10 ° C to 35 ° C. For temperature-critical tests, the test temperature is 23 °C ± 5 °C.

5 sample

5.1 Specimen shape and size A solid cylindrical specimen is used. The diameter (d0) of the specimen is 13 mm ± 0.2 mm, and the height (h0) is determined by the aspect ratio, h0/d0 = ......

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