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GB/T 3620.1-2016 PDF English

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GB/T 3620.1-2016: Designation and composition of titanium and titanium alloys
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GB/T 3620.1: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 3620.1-2016English75 Add to Cart 0-9 seconds. Auto-delivery Designation and composition of titanium and titanium alloys Valid
GB/T 3620.1-2007English519 Add to Cart 3 days Designation and composition of titanium and titanium alloys Obsolete
GB/T 3620.1-1994English199 Add to Cart 2 days Designation and composition of titanium and titanium alloys Obsolete
GB 3620-1983English199 Add to Cart 2 days Designation and composition of titanium and titanium alloys Obsolete

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GB/T 3620.1-2016: Designation and composition of titanium and titanium alloys

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GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.120.50 H 64 Replacing GB/T 3620.1-2007 Designation and composition of titanium and titanium alloys Issued on. DECEMBER 30, 2016 Implemented on. NOVEMBER 01, 2017 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China.

Table of Contents

Foreword... 3 1 Scope... 5 2 Normative references... 5 3 Chemical composition... 5 4 Chemical composition analysis and analysis report... 6 5 Others... 7 Annex A (informative) Designation and chemical composition of deleted titanium and titanium alloys... 15 Annex B (informative) Correspondence between designations of industrial pure titanium in Table 2 of this Standard and pure titanium in ASTM standard system... 16 Annex C (normative) Naming rules for titanium and titanium alloys... 17 Annex D (informative) Explanation on the implementation of this Standard and related standards... 19

Foreword

This Standard was drafted according to the rules given in GB/T 1.1-2009. This Standard replaces GB/T 3620.1-2007 “Designation and composition of titanium and titanium alloys”. Compared with GB/T 3620.1-2007, the main technical content changes of this Standard are as follows. - RESTORE the designation and chemical composition of industrial pure titanium in GB/T 3620.1-1994; - Uniformly CHANGE the designation of industrial pure titanium by adding “G” behind the designation of industrial pure titanium; - SORT the designations in tables according to the classification of titanium; - REVISE the editorial errors of TA22-1, TA24, TC15 and TC17 designations; - REVISE the Si content in TA19; - ADD a total of 8 newly registered α-type and near-α-type alloy designations, namely TA29, TA30, TA31, TA32, TA33, TA34, TA35 and TA36; - ADD A total of 6 newly registered β-type and near-β-type alloy designations, namely TB12, TB13, TB14, TB15, TB16 and TB17; - ADD a total of 6 newly registered α-β-type alloy designations, namely TC27, TC28, TC29, TC30, TC31 and TC32; - ADD the naming rules for the designation of titanium alloys; - SPECIFY the requirements for the implementation of designation and chemical composition of industrial pure titanium. This Standard is under the jurisdiction of the National Technical Committee on Non-ferrous Metals of Standardization Administration of China (SAC/TC 243). Drafting organizations of this Standard. Baoti Group Co., Ltd., Baoji Titanium Industry Co., Ltd., China Non-ferrous Metal Industry Standard Metrology and Quality Institute. Participating drafting organizations of this Standard. Beijing Institute of Aeronautical Materials, Western Metal Materials Co., Ltd., Aerospace Research Institute of Materials & Processing Technology, CSIC Luoyang Ship Material Research Institute, CHALCO Shenyang Nonferrous Metal Processing Co., Ltd., General Research Institute for Nonferrous Metals, Hunan GoldSky Titanium Industry Technology Co., Ltd. Main drafters of this Standard. Feng Junning, Qiao Lu, Ma Zhongxian, Hu Zhijie, Chen Feng, Wang Jian, Li Xianjun, Liu Dongsheng, Zhang Yuwei, Qing Daga, Wang Yang, Wang Li, Peng Hui, Wei Yanguang. The previous versions of the standard replaced by this standard are. - GB/T 3620-1983, GB/T 3620.1-1994, GB/T 3620.1-2007. Designation and composition of titanium and titanium alloys

1 Scope

This Standard specifies the designation and chemical composition of titanium and titanium alloy products. This Standard applies to various finished and semi-finished products (including ingots) pressure-processed by titanium and titanium alloys.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 3620.2 Titanium and titanium alloys - Permissible variations of chemical composition for wrought product analysis GB/T 4698 (all parts) Methods for chemical analysis of titanium and titanium alloys

3 Chemical composition

3.1 Designation and chemical composition 3.1.1 The designation and chemical composition of titanium and titanium alloy products shall comply with the specifications of Table 1, Table 2 and Table 3. 3.1.2 Boron is added in nominal quantities and the measured data is reported for reference. 3.1.3 In Table 1, Table 2 and Table 3, when it only specifies the upper limit of Si element, it shall be controlled as an impurity element. 3.2 Other elements 3.2.1 Other elements refer to trace elements that are inherently present in the production process of titanium and titanium alloys, not artificially added elements. 3.3 Allowable deviation of compositions When the demand party takes samples from products for chemical composition retest analysis, the allowable deviation of its compositions shall comply with GB/T 3620.2.

4 Chemical composition analysis and analysis report

4.1 The chemical composition arbitration analysis of titanium and titanium alloy products shall be carried out according to GB/T 4698, and the routine inspection may be carried out according to ICP or other approved methods. 4.2 Unless otherwise specified in the product standards, the supply party may take samples from titanium and titanium alloy ingots (or from the finished products for hydrogen element) for chemical composition analysis of products.

5 Others

5.1 Annex A is the designation and chemical composition of titanium and titanium alloys that were deleted in the previous revisions of GB/T 3620.1. 5.2 Annex B shows the correspondence between designations of industrial pure titanium in Table 2 and pure titanium in ASTM standard system. 5.3 Annex C shows the naming rules for titanium and titanium alloys.

Annex A

(informative) Designation and chemical composition of deleted titanium and titanium alloys The designation and chemical composition of deleted titanium and titanium alloys are shown in Table A.1.

Annex B

(informative) Correspondence between designations of industrial pure titanium in Table 2 of this Standard and pure titanium in ASTM standard system The correspondence between designations of industrial pure titanium in Table 2 of this Standard and pure titanium in ASTM standard system is shown in Table B.1.

Annex C

(normative) Naming rules for titanium and titanium alloys C.1 Basic rules for naming of designation C.1.1 Classification C.1.2 Naming rules C.1.2.1 The naming of the designation of titanium and titanium alloys shall be based on the registration system. Before the naming of the designation, the designation shall be registered, and the name shall be unified. C.1.2.2 The designation of titanium and titanium alloys is indicated by letters and numbers. C.2 Combination method for designation C.2.1 The first digit of the designation is capital letters “T”, which indicates titanium and titanium alloys. C.2.4 The ultra-low-gap alloys of the same designation are marked with the letter “ELI” after the numbers, and there is no gap between the numbers and “ELI”. C.3 Combination rules for nominal composition C.3.1 The nominal composition of titanium alloy designations only lists the elements of which the range must be controlled. C.3.2 The determination of the element content in the nominal composition shall be based on the arithmetical mean within its control range.

Annex D

(informative) Explanation on the implementation of this Standard and related standards D.1 Explanation on the implementation of TA0, TA1, TA2 and TA3 designations ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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