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GB/T 39535-2020: (Determination of Shore Hardness of Carbon Materials)
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 39535-2020 | English | 79 |
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(Determination of Shore Hardness of Carbon Materials)
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GB/T 39535-2020
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Basic data | Standard ID | GB/T 39535-2020 (GB/T39535-2020) | | Description (Translated English) | (Determination of Shore Hardness of Carbon Materials) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q50 | | Word Count Estimation | 4,475 | | Date of Issue | 2020-11-19 | | Date of Implementation | 2021-06-01 | | Regulation (derived from) | National Standard Announcement No. 26 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 39535-2020: (Determination of Shore Hardness of Carbon Materials)---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 Shore Hardness of Carbon Materials)
ICS 29.050
CCSQ50
National Standards of People's Republic of China
Determination of Shore Hardness of Carbon Materials
2020-11-19 released
2021-06-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document was proposed by the China Iron and Steel Association.
This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183).
This document was drafted by. Sinosteel New Materials (Zhejiang) Co., Ltd., Anhui Hongchang New Materials Co., Ltd., Kaifeng Pingmei New Type Carbon
Material Technology Co., Ltd., Shanxi Juxian Graphite New Material Co., Ltd., Datong Yulinde Graphite New Material Co., Ltd., Hunan Zhensheng Carbon
Industrial Co., Ltd., Henan Shengrui Carbon Material Technology Co., Ltd., Beijing University of Chemical Technology, Metallurgical Industry Information Standards Research Institute.
The main drafters of this document. Yang Hui, Mao Yuzhen, Zheng Jingxu, Xu Jianping, Chen Wenlai, Zhang Xiangjun, Zhang Huibing, Qiu Jieshan, Wu Jie, Zhang Qi,
Wu Zhiping, Feng Jianguo, Wang Sizhai, Ma Wei, Wen Zhiwei, Kang Jincai, Wu Feng, Cai Changhai, Hong Liang, Gao Yonghong.
Determination of Shore Hardness of Carbon Materials
1 Scope
This document specifies the principle, equipment, samples, test procedures, precision, and test report of the Shore hardness of carbon materials.
This document is applicable to the determination of Shore hardness of carbon materials with aggregate particles less than 0.8mm, and other carbon materials are used as reference.
2 Normative references
The contents of the following documents constitute indispensable clauses of this document through normative references in the text. Among them, dated reference documents,
Only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document.
GB/T 1427 Sampling method for carbon materials
GB/T 8170 Numerical rounding rules and the expression and determination of limit values
3 Terms and definitions
There are no terms and definitions that need to be defined in this document.
4 Principle
Shore hardness refers to a method of testing and representing the hardness of a material. A diamond punch is used to fall on the surface of the sample from a fixed height.
The ratio of the first rebound height of the head to the drop height is proportional to the Shore hardness. For example, 60HSD means that the Shore hardness tested by D-type Shore hardness tester is 60HS.
5 Equipment
5.1 Shore hardness tester. D type or similar instrument, the main technical parameters are shown in Table 1.
Table 1 Main technical parameters of Shore hardness tester
Type D
Diameter of punch rod/mm 7.94
The mass of the punch/g 36.2
The drop height of the punch/mm 19.0
Spherical radius of punch tip/mm 1.0
Indication range (HS) 0~140
5.2 Vernier caliper. measuring range 0mm~200mm, accuracy is 0.02mm.
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