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GB/T 33820-2025: Metallic materials - Ductility testing - High speed compression test for porous and cellular metals
Status: Valid GB/T 33820: Evolution and historical versions
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Metallic materials - Ductility testing - High speed compression test for porous and cellular metals
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GB/T 33820-2025
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| GB/T 33820-2017 | English | 304 |
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Metallic materials -- Ductility testing -- High speed compression test for porous and cellular metals
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GB/T 33820-2017
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PDF similar to GB/T 33820-2025
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Count Estimation | 22,223 | | Date of Issue | 2025-06-30 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB/T 33820-2017 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T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
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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
Table of Contents
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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