GB/T 3620.2-2023 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 3620.2-2023 | English | 80 |
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Titanium and titanium alloy permissible variations of chemical composition for wrought product analysis
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| GB/T 3620.2-2007 | English | 70 |
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Titanium and titanium alloys -- Permissible variations of chemical composition for wrought product analysis
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| GB/T 3620.2-1994 | English | 199 |
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Titanium and titanium alloys-permissible variations of chemical composition for wrought product analysis
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GB/T 3620.2-2023: Titanium and titanium alloy permissible variations of chemical composition for wrought product analysis
---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/GBT3620.2-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.120.50
CCS H 64
Replacing GB/T 3620.2-2007
Titanium and Titanium Alloy Permissible Variations of
Chemical Composition for Wrought Product Analysis
Issued on. AUGUST 6, 2023
Implemented on. MARCH 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative References... 4
3 Terms and Definitions... 4
4 Technical Requirements... 5
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives
for Standardization - Part 1.Rules for the Structure and Drafting of Standardizing Documents.
This document serves as a replacement of GB/T 3620.2-2007 Titanium and Titanium Alloys -
Permissible Variations of Chemical Composition for Wrought Product Analysis. In comparison
with GB/T 3620.2-2007, apart from structural adjustments and editorial modifications, the main
technical changes are as follows.
a) The content of the Scope is modified (see Chapter 1; Chapter 1 of Version 2007);
b) The general principles of sampling are deleted (see 4.1 of Version 2007);
c) The description of the applicability of the permissible variations of chemical
composition is added (see 4.1.2);
d) The permissible variations of the element W are added (see 4.1.3);
e) The permissible variations of the elements O, Al, Cr, Mo, Mn, Cu, B, Zr and Y are
modified (see 4.1.3; 4.4.3 of Version 2007);
f) The requirements for sampling locations are modified (see 4.2; 4.2 of Version 2007);
g) The analysis method YS/T 1262 for chemical composition is added (see 4.3).
Please be noted that certain content of this document may involve patents. The institution
issuing this document does not undertake the responsibility of identifying these patents.
This document was proposed by China Non-ferrous Metals Industry Association.
This document shall be under the jurisdiction of National Technical Committee on Nonferrous
Metals of Standardization Administration of China (SAC/TC 243).
The drafting organizations of this document. Baoji Titanium Industry Co., Ltd.; Baotai Group
Co., Ltd.; China Nonferrous Metals Techno-Economic Research Institute Co., Ltd.; Xinjiang
Xiangrun New Material Technology Co., Ltd.; CHINALCO Shenyang Nonferrous Metal
Processing Co., Ltd.; Hunan Xiangtou Goldsky New Materials Co., Ltd.; Baowu Special
Metallurgical Co., Ltd.; Baoji Top Titanium Industry Co., Ltd.; Youyan Engineering
Technology Research Institute Co., Ltd.
The main drafters of this document. Bai Huanhuan, Ma Zhongxian, Xie Chen, Bai Zhuihui,
Zhang Jiangfeng, Qing Daga, Ma Jiakun, Yang Rong, Ye Hongchuan, Liu Jiatao, Li Junzhao,
Li Xiaodong, Li Baoxia, Yu Yang, Feng Junning, Feng Yongqi, Gao Qi.
This document was firstly issued in 1983, firstly revised in 1994 and secondly revised in 2007.
This is the third revision.
Titanium and Titanium Alloy Permissible Variations of
Chemical Composition for Wrought Product Analysis
1 Scope
This document specifies the permissible variations of chemical composition for titanium and
titanium alloy wrought product (plates, strips, foils, pipes, bars, wires, forgings, profiles and
castings).
This document is applicable to the demand-side’s check analysis and arbitration analysis of the
chemical composition of the product.
This document does not apply to the supply-side’s analysis of the chemical composition of the
product, nor does it apply to the check analysis of changes in the content of impurity elements
(such as. hydrogen, nitrogen and oxygen) caused by the demand-side’s reprocessing of the
product.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 4698 (all parts) Methods for Chemical Analysis of Titanium Sponge, Titanium and
Titanium Alloys
GB/T 31981 Methods of Sampling and Sample Preparation for Chemical Composition Analysis
of Titanium and Titanium Alloy
3 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1 check analysis
Chemical composition analysis conducted by the demand-side by taking samples from the
processed products.
4 Technical Requirements
4.1 Permissible Variation of Chemical Composition
4.1.1 Unless otherwise specified in the product standard or order sheet, the permissible variation
of chemical composition of titanium and titanium alloy wrought products shall comply with the
stipulations of Table 1.
4.2 Sampling Method
The sampling method of the analytical specimens of the chemical composition of titanium and
titanium alloy shall comply with the stipulations of GB/T 31981.
4.3 Analytical Method of Chemical Composition
4.3.1 The analytical method of the chemical composition of titanium and titanium alloy wrought
products shall comply with GB/T 4698 (all parts) or YS/T 1262.The analytical methods for
elements not included in GB/T 4698 (all parts) or YS/T 1262 shall be determined by the
demand-side and the supply-side through negotiation.
4.3.2 The arbitration analysis of the chemical composition of titanium and titanium alloy
wrought products shall comply with the analytical method specified in the product standard;
when the arbitration analysis method is not specified in the product standard, it shall be
determined by the demand-side and the supply-side through negotiation.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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