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GB/T 23603-2024: Test method for titanium and titanium alloy surface contamination
Status: Valid GB/T 23603: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23603-2024 | English | 209 |
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Test method for titanium and titanium alloy surface contamination
| Valid |
GB/T 23603-2024
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| GB/T 23603-2009 | English | 189 |
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Titanium and titanium alloy surface contamination layer detection method
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GB/T 23603-2009
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PDF similar to GB/T 23603-2024
Basic data | Standard ID | GB/T 23603-2024 (GB/T23603-2024) | | Description (Translated English) | Test method for titanium and titanium alloy surface contamination | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H24 | | Classification of International Standard | 77.120.50 | | Word Count Estimation | 10,130 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2025-04-01 | | Older Standard (superseded by this standard) | GB/T 23603-2009 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 23603-2024: Test method for titanium and titanium alloy surface contamination---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.
Test method for titanium and titanium alloy surface contamination
Detection method of contamination layer on the surface of titanium and titanium alloy
ICS 77.120.50
CCS H 24
National Standard of the People's Republic of China
Replace GB/T 23603-2009
Released on 2024-09-29
2025-04-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
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 for standardization documents"
Drafting is required.
This document replaces GB/T 23603-2009 "Detection method for surface contamination layer of titanium and titanium alloys".
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
Changed the scope (see Chapter 1, Chapter 1 of the.2009 edition); a)
Added the term and definition of "α layer thickness" (see 3.2); b)
Deleted "Requirements for personal protection and equipment and apparatus" (see 3.7 of the.2009 edition); c)
Added "Principles" (see Chapter 5); d)
Added "Reagents" (see Chapter 6); e)
Added "Instruments and Equipment" (see Chapter 7); f)
The sample preparation requirements for the α layer detection of titanium and titanium alloys have been changed (see 8.2, 3.2 of the.2009 edition); g)
The determination requirements for the α layer of titanium and titanium alloys have been changed (see Chapter 9, 3.5 of the.2009 edition); h)
The measurement method of the thickness of the α layer of titanium and titanium alloys has been changed (see 10.1, 3.6 of the.2009 edition); i)
Added the method of measuring the thickness of the α layer of titanium and titanium alloys by microhardness method (see 10.2). j)
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 China Nonferrous Metals Industry Association.
This document is under the jurisdiction of the National Technical Committee on Standardization of Nonferrous Metals (SAC/TC 243).
This document was drafted by. Baoji Titanium Industry Co., Ltd., Baoti Group Co., Ltd., Nonferrous Metals Technology and Economics Research Institute Co., Ltd.
Company, Xi'an Han Tang Analysis and Testing Co., Ltd., Western Superconducting Materials Technology Co., Ltd., National Standard (Beijing) Inspection and Certification Co., Ltd.
Shaanxi Yichuang Titanium and Zirconium Testing Co., Ltd., Ningxia Zhongse Jinhang Titanium Industry Co., Ltd., Xinjiang Xiangrun New Materials Technology Co., Ltd., Hunan Xiangrun
Jintian Titanium Technology Co., Ltd., Guohe General (Qingdao) Testing and Evaluation Co., Ltd., and Chalco Shenyang Nonferrous Metal Processing Co., Ltd.
Co., Ltd., Xinpengyuan Intelligent Equipment Group Co., Ltd.
The main drafters of this document are. Li Jian, Shi Wen, Zhang Jiawei, Bai Zhihui, Wu Jingjing, Zhu Jing, Deng Qiaojuan, Hu Lei, Shen Lihua,
Dong Xiaofeng, Xiao Zhibin, Cui Wenming, Wang Shuai, Gao Hairui, Cai Meichao, Li Xiao, Gao Keyang, Feng Junning, Zhang Lei, and Feng Yongqi.
This document was first published in.2009 and this is the first revision.
Detection method of contamination layer on the surface of titanium and titanium alloy
1 Scope
This document describes the determination of the surface contamination layer (also called α layer) of titanium and titanium alloy products and the measurement of the α layer thickness by metallographic method and microhardness method.
method.
This document is applicable to the determination of surface contamination layer and measurement of α layer thickness on titanium and titanium alloy products.
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.
in this document.
GB/T 4340.1 Vickers hardness test for metallic materials Part 1.Test method
GB/T 5168 Titanium and titanium alloy macrostructure inspection method
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 38982 Testing methods for dimensions of titanium and titanium alloy processed products
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
alpha case
An alpha-stable surface layer enriched in oxygen, nitrogen and carbon.
Note. The α layer is usually formed when exposed to air at high temperature. It is usually hard and brittle and is considered harmful. It is also called the surface contamination layer.
3.2
Thickness of alpha case
The maximum depth of the continuous α layer and the extended discontinuous α layer on the surface of titanium and titanium alloys.
4 Symbols
The symbols defined in GB/T 38982 apply to this document.
5 Principle
The prepared metallographic sample retaining the original surface of the product is used with a specific corrosive agent to reveal the α-phase enriched layer structure that is different from the matrix structure.
The thickness of the α layer is measured under a microscope, i.e. metallographic method.
The hardness tester measures the specific relationship between the hardness values of the α layer and the matrix structure to determine the thickness of the thicker α layer, which is the microhardness method.
6 Reagents
Unless otherwise specified, only confirmed chemically pure reagents, distilled water or deionized water (hereinafter referred to as water) were used in the experiments.
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