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GB/T 33820-2025 English PDF

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Q: Should I purchase the latest version GB/T 33820-2025?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 33820-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$444.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 33820-2025: Metallic materials - Ductility testing - High speed compression test for porous and cellular metals
Status: Valid

GB/T 33820: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 33820-2025	444	Add to Cart	4 days	Metallic materials - Ductility testing - High speed compression test for porous and cellular metals	Valid
GB/T 33820-2017	304	Add to Cart	4 days	Metallic materials -- Ductility testing -- High speed compression test for porous and cellular metals	Valid

Similar standards

GB/T 36915 GB/T 37306.1 GB/T 34487 GB/T 45169 GB/T 33812

Basic data

Standard ID: GB/T 33820-2025 (GB/T33820-2025)
Description (Translated English): Metallic materials - Ductility testing - High speed compression test for porous and cellular metals
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H22
Classification of International Standard: 77.040.10
Word Count Estimation: 22,223
Date of Issue: 2025-06-30
Date of Implementation: 2026-01-01
Older Standard (superseded by this standard): GB/T 33820-2017
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 33820-2025: Metallic materials - Ductility testing - High speed compression test for porous and cellular metals

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT33820-2025
ICS 77.040.10 CCSH22 National Standard of the People's Republic of China Replaces GB/T 33820-2017 Ductility test of metal materials High-speed compression test method for cellular and cellular metals (ISO 17340.2020, IDT) Released on June 30, 2025 Implementation on January 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols and instructions 2 5 Principle 2 6 Test Equipment 3 6.1 Test equipment type 3 6.2 Drop weight impact tester 3 6.2.1 General requirements 3 6.2.2 Hammer 4 6.2.3 Press plate 4 6.2.4 Force Sensor 4 6.2.5 Displacement Sensor 4 6.2.6 Shock absorber 4 6.3 Servo High-Speed Compression Testing Machine 4 6.3.1 General requirements 4 6.3.2 Press plate 5 6.3.3 Force Sensor 5 6.3.4 Displacement Sensor 5 6.3.5 Safety pin 5 6.3.6 Baffle 6 7 Sample 6 7.1 Sample preparation 6 7.2 Shape and size of test specimen 6 8 Drop weight impact test 7 8.1 Test Preparation 7 8.2 Test 7 9 Servo high-speed compression test 8 9.1 Test Equipment 8 9.2 Test 8 10 Calculation 8 10.1 Compressive strain 8 10.2 Compressive stress 9 10.3 Compressive stress-strain curve 9 10.4 Platform stress (σpl) 9 10.5 Platform End Point 9 10.6 Strain at the end of the platform (eple) 9 10.7 Absorption of Energy 9 11 Test Report11 Appendix A (Informative) Filtering of Measurement Data 13 Reference 16 Preface This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB/T 33820-2017 "Metallic materials - Ductility test - High-speed compression test method for porous and cellular metals" Compared with GB/T 33820-2017, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Added symbols and instructions (see Chapter 4); b) Deleted “When the porosity is obviously uneven, the multiple may be appropriately increased” [see 7.2b), Note to 6.2b) of the.2017 edition]; c) The regulations on the use of adhesives have been changed [see 8.2b), 7.2b of the.2017 edition]; d) The coordinate axis symbols of all graphs were adjusted and modified; e) The unit of compressive stress has been changed (see 10.2, 9.2 of the.2017 edition). This document is equivalent to ISO 17340.2020 “Metallic materials – Ductility tests – High-speed compression test method for cellular and cellular metals” Law". The following minimal editorial changes have been made to this document. --- Added notes on the simultaneous acquisition of compression force and displacement in the drop weight impact test step (see 8.2). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Iron and Steel Association. This document is under the jurisdiction of the National Technical Committee on Steel Standardization (SAC/TC183). This document was drafted by. China Certification and Inspection Group Hubei Co., Ltd., Huaibei Jiaping Industrial and Mining Equipment Technology Service Co., Ltd., Hebei Cheng University, Metallurgical Industry Information Standards Research Institute, Wuhan Oriental Junchi Precision Manufacturing Co., Ltd., China Aircraft Strength Research Institute, Southeast University, Jiashan Taili Honeycomb Products Co., Ltd. The main drafters of this document are. Li Zhi, Zhang Jiliang, Shao Yi, Ma Cong, Dong Li, Zhu Jiangping, Zeng Lei, Zhang Chunya, Huang Guangwei, Hui Xulong, Dai Ge, Hou Huining, Zhu Hong, Guo Xin, Wang Xinyue, Li Li, Chen Wei, Li Li, He Siyuan, Liu Xiaochuan, Wang Yana, Li Xiaoming, Hu Xiaozhong, Bai Chunyu, Guo Bicheng. This document was first published in.2017 and this is the first revision.

introduction

Porous and honeycomb metals have excellent properties due to their unique cellular pore structure. High-speed compression characteristics are essential for industrial design when designing impact-absorbing components. The high-speed compression deformation is obviously different from its static compression characteristics. Therefore, the static compression deformation test method is not suitable for high-speed compression test. Standardized test methods for high-speed compression of cellular and cellular metal materials are imperative. Ductility test of metal materials High-speed compression test method for cellular and cellular metals 1 Scope This document specifies the method for high-speed compression testing of cellular and cellular metals at room temperature. This document applies to cellular and cellular metals having a porosity of 50% or more. The speed range of this test method is 0.1m/s~100m/s (when the sample height is 100mm, the initial strain rate is 1s-1~103s-1). 2 Normative references The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. Note. GB/T 13634-2019 Calibration of standard dynamometers for uniaxial testing machines for metallic materials (ISO 376.2011, IDT) system) Note. GB/T 16825.1-2022 Inspection and calibration of static uniaxial testing machines for metallic materials Part 1.Force measurement of tension and/or compression testing machines System verification and calibration (ISO 7500-1.2018, IDT) larmetals) Note. GB/T 31930-2015 Metallic materials - Ductility tests - Compression test on cellular and cellular metals (ISO 13314.2011, IDT) ISO 80000-1 (Quantitiesandunits-Part 1.General) 3 Terms and Definitions For the purposes of this document, the terms and definitions defined in ISO 13314 and the following apply. 3.1 Test speed testspeed When applying pressure to the specimen, the speed at which the pressure plate moves when it contacts the specimen. 3.2 Initial strain rate initialstrainrate The value obtained by dividing the test speed by the initial height of the specimen. 3.3 sampling frequency The number of measurement data samples per unit time. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 33820-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 33820-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 33820-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 33820-2025_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.

Question 5: Should I purchase the latest version GB/T 33820-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 33820-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.