GB/T 43447-2023 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 43447-2023	429	Add to Cart	4 days	Jewellery - Colours of gold alloys - Definition, range of colours and designation	Valid

Similar standards

GB/T 40114   GB/T 36129   GB/T 36128   GB/T 46122.10   GB/T 46122.11   

Basic data

Standard ID: GB/T 43447-2023 (GB/T43447-2023)
Description (Translated English): Jewellery - Colours of gold alloys - Definition, range of colours and designation
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y88
Classification of International Standard: 39.060
Word Count Estimation: 21,277
Date of Issue: 2023-11-27
Date of Implementation: 2024-06-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 43447-2023: Jewellery - Colours of gold alloys - Definition, range of colours and designation

---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 39:060 CCSY88 National Standards of People's Republic of China Jewelry Gold Alloy Color Definitions, color ranges and naming (ISO 8654:2018,MOD) Published on 2023-11-27 2024-06-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Foreword

This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document has been modified to adopt ISO 8654:2018 "Jewellery Gold Alloy Color Definition, Color Range and Naming": Compared with ISO 8654:2018, this document has many structural adjustments: Comparison list of structure number changes between the two files See Appendix A: Compared with ISO 8654:2018, this document has many technical differences: Use vertical single words in the outer margin of the clauses involved: Lines (|) are marked: A list of these technical differences and their causes is provided in Appendix B: The following editorial changes have been made to this document: ---Incorporated the amendments to ISO 8654:2018/Amd:1:2019, the outer margins of the clauses involved are marked with vertical Double lines (‖) are marked: Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents: This document is proposed by China Light Industry Federation: This document is under the jurisdiction of the National Jewelry Standardization Technical Committee (SAC/TC256): This document was drafted by: Beijing Guoshou Jewelry Testing Co:, Ltd:, Shenzhen Xingguangda Jewelry Industrial Co:, Ltd:, Chow Tai Fook Jewelry and Gold Shop (Shenzhen) Co:, Ltd:, Shenzhen Ganlu Jewelry Co:, Ltd:, Guangzhou Panyu Vocational and Technical College, Wuhan Zhongdi Jewelry Inspection Testing Co:, Ltd:, Guangdong Gold and Silver Jewelry Testing Center Co:, Ltd:, Shenzhen Baitai Investment Holding Group Co:, Ltd:, Shenzhen Xianshi Jewelry INDUSTRIAL DESIGN INSTITUTE LIMITED: The main drafters of this document: Li Suqing, Gao Juncai, Li Kun, Lin Changwei, Liao Zhenwei, Zheng Huanjian, Huang Yanyou, Di Jingru, Zhou Cankun, Tang Ziwei, Yang Mingxing, Luo Yueping, Cai Yuanyang, Chen Shan, Zheng Qiuju, Xu Xingyang: Jewelry Gold Alloy Color Definitions, color ranges and naming

1 Scope

This document specifies the definitions, nomenclature and color measurement methods related to the color of gold alloys: This document applies to gold alloy products or gold alloy covered products:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document: GB/T 3977 Color Representation Method (GB/T 3977-2008,CIE15:2004,NEQ) GB/T 3978 Standard lighting bodies and geometric conditions (GB/T 3978-2008, CIE15:2004, CIES005:1999, NEQ) GB/T 3979 Measurement method of object color (GB/T 3979-2008,CIE15:2004,NEQ) GB/T 7921 Uniform color space and color difference formula (GB/T 7921-2008, CIE15:2004, CIE142:2001, NEQ)

3 Terms and definitions

The terms and definitions defined in GB/T 3977, GB/T 3978, GB/T 3979, GB/T 7921 and the following apply to this document: 3:1 colorcolour Visual properties represented by chromaticity coordinates x, y and stimulus value Y: Note 1: GB/T 3979 stipulates that the value of Y is consistent with the percentage of light reflection factor: Note 2: When used for specific purposes or in the field of national standardization, the chromaticity coordinates can be converted into other nationally or internationally recognized colors according to GB/T 7921: degree system (such as CIE1976L*a*b* color space or CIE1976L*u*v* color space): 3:2 tolerance tolerance The tolerance range of the nominal value of the chromaticity coordinate corresponding to a certain color number: 3:3 color filmcolourslip Flake precious metal products showing a specific color made according to a certain chemical composition:

4 naming

According to the chromaticity coordinates, the naming of the seven colors is shown in Table 1: ......

Image