GB/T 3459-2022 English PDF

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GB/T 3459-2022: Tungsten bars
Status: Valid

GB/T 3459: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 3459-2022	199	Add to Cart	3 days	Tungsten bars	Valid
GB/T 3459-2006	279	Add to Cart	3 days	Tungsten bars and rods	Obsolete
GB/T 3459-1982	199	Add to Cart	2 days	Tungsten bars	Obsolete

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GB/T 4325.5   GB/T 4325.6   GB/T 4325.7   GB/T 3460   GB/T 3457   

Basic data

Standard ID: GB/T 3459-2022 (GB/T3459-2022)
Description (Translated English): Tungsten bars
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H63
Classification of International Standard: 77.150.99
Word Count Estimation: 10,194
Date of Issue: 2022-12-30
Date of Implementation: 2023-07-01
Older Standard (superseded by this standard): GB/T 3459-2006
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 3459-2022: Tungsten bars

---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.
ICS 77.150.99 CCSH63 National Standards of People's Republic of China Replacing GB/T 3459-2006 Tungsten bar Posted on 2022-12-30 2023-07-01 implementation State Administration for Market Regulation Released 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 for Standardization Documents" drafting. This document replaces GB/T 3459-2006 "Tungsten Bar". Compared with GB/T 3459-2006, except for structural adjustment and editorial changes, the main The technical changes are as follows. a) TW-0 designation and requirements are added (see Chapter 4 and Chapter 5); b) Changed the main purpose of TW-1 (see 4.1, 3.1.1 of the.2006 edition); c) The chemical composition increases the Cr content and S content requirements (see 5.1); d) Changed the content requirements of impurity elements such as Fe, Ni, Mo, C and O (see 5.1, 3.2 of the.2006 edition); e) Changed the size range of tungsten square bar and tungsten round bar (see 5.3, 3.4 of the.2006 edition); f) Changed the appearance quality requirements (see 5.4.1, 3.5.1 of the.2006 edition); g) Added the normative reference document YS/T 559 (see 6.1); h) Changed the sampling position (see 7.3, 5.3 of the.2006 edition). Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Nonferrous Metals Industry Association. This document is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243). This document is drafted by. Zhuzhou Cemented Carbide Group Co., Ltd., Zigong Cemented Carbide Co., Ltd., Xiamen Honglu Tungsten and Molybdenum Industry Co., Ltd. Co., Ltd., Antai Tianlong Tungsten and Molybdenum Technology Co., Ltd., General Iron and Steel Research Institute Co., Ltd., Hubei Green Tungsten Resource Recycling Co., Ltd. The main drafters of this document. Zhang Waiping, Xia Yancheng, Fu Chongwei, Liang Hong, Liu Wei, Li Boming, Yang Xiaoqing, Xie Zhiguo, Tan Hua, Xiong Ning, Dong Di, Liu Yu, Dong Shasha, Feng Hao. This document was first released in 1982, revised for the first time in.2006, and this is the second revision. Tungsten bar

1 Scope

This document specifies the classification, technical requirements, test methods, inspection rules, signs, packaging, transportation, storage, accompanying documents and ordering of tungsten bars. single content. This document applies to pure tungsten rods produced by powder metallurgy.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 3850 Density Determination Method for Dense Sintered Metal Materials and Cemented Carbide GB/T 4324 (all parts) Methods for chemical analysis of tungsten GB/T 6394-2017 Determination method for average grain size of metals YS/T 559 Emission spectrum analysis method of tungsten

3 Terms and Definitions

This document does not have terms and definitions that need to be defined.

4 categories

4.1 Tungsten bars are divided into four grades. TW-0, TW-1, TW-2, and TW-4 according to different chemical compositions and uses. TW-0 is mainly used for high temperature alloy Additives such as gold and high-entropy alloys; TW-1 is mainly used as additives for high-temperature alloys; TW-2 is mainly used as raw materials for processing materials; TW-4 is mainly used As an alloy additive. 4.2 Tungsten bars are divided into tungsten square bars and tungsten round bars according to different shapes. See Example 1 for the representation of tungsten square bars, and see Example 1 for the representation of tungsten round bars Example 2. Example 1. product. TW-1 tungsten square bar with a width of 12mm, a height of 12mm, and a length of 300mm. mark. TW-112×12×300 Example 2. product. TW-1 tungsten round bar with a diameter of 16mm and a length of 300mm. mark. TW-1ϕ16×300 ......

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