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Cemented carbide products for ultra precision optical dies
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Basic data
| Standard ID | GB/T 46324-2025 (GB/T46324-2025) |
| Description (Translated English) | Cemented carbide products for ultra precision optical dies |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | H72 |
| Classification of International Standard | 77.160 |
| Word Count Estimation | 10,164 |
| Date of Issue | 2025-10-05 |
| Date of Implementation | 2026-05-01 |
| Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China |
GB/T 46324-2025: Cemented carbide products for ultra precision optical dies
---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 77.160
CCSH72
National Standards of the People's Republic of China
cemented carbide products for ultra-precision optical molds
Published on 2025-10-05
Implemented on May 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
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.
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Nonferrous Metals Industry Association.
This document is under the jurisdiction of the National Technical Committee on Standardization of Nonferrous Metals (SAC/TC243).
This document was drafted by. Xiamen Tungsten Co., Ltd., Jiangsu Haona Optoelectronic Co., Ltd., and Jiujiang Jinlu Hard Alloy Co., Ltd.
Company, Hunan University, Anhui Shangxin Jinggong New Material Technology Co., Ltd., Chengdu Meisherui New Material Co., Ltd., Jiangsu Youpuna Technology Co., Ltd.
Company, Chongyi Zhangyuan Tungsten Industry Co., Ltd., GRINM Engineering Technology Research Institute Co., Ltd., and Penglai Superhard Composite Materials Co., Ltd.
The main drafters of this document are. Liu Chao, Fan Chaoying, Zheng Wenqing, Zhang Taiquan, Zhao Xin'an, Du Wei, Yin Shaohui, Han Cuiliu, Liu Jian, and Lu Pan.
Xu Guozuan, Zhong Zhiqiang, Zhang Hua, Zhao Mei.
cemented carbide products for ultra-precision optical molds
1 Scope
This document specifies the product grades, classifications, model designations, technical requirements, and testing procedures for cemented carbide products used in ultra-precision optical molds.
Methods, inspection rules, marking, packaging, transportation, storage, and accompanying documents and purchase order contents.
This document applies to ultra-precision optical fibers prepared by powder metallurgy with a binder phase (Co, Ni, or Fe) content not exceeding 1.00% (mass fraction).
Learn about cemented carbide products used in mold making.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 3488.2 Metallographic determination of microstructure of cemented carbide - Part 2.Measurement of WC grain size
GB/T 3488.4 Metallographic determination of microstructure of cemented carbide - Part 4.Porosity, non-carbon defects and decarburized phases
Phase determination
GB/T 3850 Method for Determination of Density of Dense Sintered Metallic Materials and Hard Alloys
GB/T 3851 Method for Determination of Transverse Fracture Strength of Cemented Carbide
GB/T 4339 Determination of characteristic parameters of thermal expansion of metallic materials
GB/T 5243 Marking, Packaging, Transportation and Storage of Hard Alloy Products
GB/T 7997 Vickers Hardness Test Method for Cemented Carbide
GB/T 26050 Determination of Metallic Element Content in Hard Alloys by X-ray Fluorescence Spectrometry
3 Terms and Definitions
This document does not contain any terms or definitions that need to be defined.
4.Rules for Product Brand, Classification and Model Designation
4.1 Product Brand
The products are classified into two grades based on their chemical composition. YM05 and YM10."Y" represents cemented carbide, "M" represents mold, and "05" represents...
The binder phase metal content ranges from 0% to 0.50%, and "10" represents a binder phase metal content range of >0.50% to 1.00%.
4.2 Classification
The products are classified into sheet products and rod products according to their shape.
4.3 Model Designation Rules
4.3.1 Sheet metal products
The designation of sheet metal products consists of five parts. sheet metal code (MP), length (L), width (W), thickness (H), and additional information code.
See example.
...
