Path:
Home >
GB/T >
Page505 > GB/T 46079-2025
Price & Delivery
US$439.00 · In stock · Download in 9 secondsGB/T 46079-2025: Additive manufacturing of polymers - Feedstock materials - Qualification of materials for laser-based powder bed fusion of parts
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See
step-by-step procedureStatus: Valid
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| GB/T 46079-2025 | English | 439 |
Add to Cart
|
4 days [Need to translate]
|
Additive manufacturing of polymers - Feedstock materials - Qualification of materials for laser-based powder bed fusion of parts
|
Click to Preview a similar PDF
Basic data
| Standard ID | GB/T 46079-2025 (GB/T46079-2025) |
| Description (Translated English) | Additive manufacturing of polymers - Feedstock materials - Qualification of materials for laser-based powder bed fusion of parts |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G31 |
| Classification of International Standard | 25.030 |
| Word Count Estimation | 22,214 |
| Date of Issue | 2025-08-29 |
| Date of Implementation | 2026-03-01 |
| Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration |
GB/T 46079-2025: Additive manufacturing of polymers - Feedstock materials - Qualification of materials for laser-based powder bed fusion of parts
---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/GBT46079-2025
ICS 25.030
CCSG31
National Standard of the People's Republic of China
Polymer additive manufacturing raw materials
Identification of Materials for Laser Powder Bed Fusion
(ISO /ASTM52925.2022,MOD)
Released on August 29, 2025
Implementation on March 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Symbols and abbreviations 1
4.1 Symbols 1
4.2 Abbreviations 2
5 Sampling requirements 2
5.1 General Principles 2
5.2 Raw powder and powder batch 2
5.3 Used powder 2
6 Factory inspection report 3
6.1 General Principles 3
6.2 Particle size distribution 3
6.3 Residual monomer content/additive content 3
6.4 Supplementary Data 3
7 Factors affecting formability 4
7.1 Overview 4
7.2 Powder Spreadability 4
7.3 Powder relative humidity (surface humidity) 4
7.4 Particle size distribution 4
8 Factors affecting parts quality 5
8.1 Overview 5
8.2 Melting Characteristics, Melt Flow and MVR 5
8.3 Melting Temperature and Recrystallization Temperature 6
Appendix A (Informative) Hausner Ratio HR 8
Appendix B (Informative) Determination of Melt Volume Flow Rate (MVR) 10
Appendix C (Informative) Cyclic MVR Test 13
Reference 15
Preface
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 is modified to adopt ISO /ASTM 52925.2022 “Materials for laser powder bed fusion of polymer additive manufacturing raw materials”
Identification".
The technical differences between this document and ISO /ASTM 52925.2022 and their reasons are as follows.
--- The normative reference GB/T 35351 replaces ISO /ASTM 52900 (see Chapter 3) to follow the standards of my country’s additive manufacturing field.
The domain terms are defined in a customary way, which is convenient for use;
--- Change the homogenization treatment requirement of used powder to a necessary requirement (see 5.3 Important Note) to conform to the actual production process;
--- Added the requirement for the placement time of powder before relative humidity measurement to reflect the sensitivity of the powder itself to humidity (see 7.3).
The following editorial changes have been made to this document.
--- Added the abbreviation "PBF-LB/P" (see 4.2);
--- Replace ASTM D 6779 with the informative reference GB/T 32363.1 (see 6.4);
--- Replaced ISO 6186 with GB/T 21060 as an informative reference, and replaced ISO 60
(see 7.2);
--- Replaced with informative references GB/T 19077, GB/T 21649.1, GB/T 21649.2, GB/T 6003 (all parts)
ISO 13320, ISO 13322-1, ISO 13322-2, ISO 3310 (all parts) and ASTM D1921, which define particle size distribution as
The paragraphs on the measurement methods are changed to items (see 7.4);
--- Replaced ISO 307 with the informative reference GB/T 12006.1 (see 8.2.2);
--- Added the symbol description in the calculation formula of relative viscosity ηrel (see 8.2.2);
--- Added the heat flow direction of the DSC curve in Figure 1 (see 8.3);
--- Use the informative references GB/T 3682.1-2018 and GB/T 3682.2 to replace ISO 1133-1.2011 and ISO 1133-2 (see
B.1, B.2, B.3 and B.5), replace ISO 1133-1 with the informative reference GB/T 3682.1 (see 8.2.3.1, B.1, B.4 and
B.7);
--- Replaced ISO 11357-1 and ASTM D3418 with the informative reference GB/T 19466.1, and changed the heating and cooling rates
Units (see 8.3);
--- Replaced ISO 61 with the informative reference GB/T 39821, and replaced ISO 787-11 with the informative reference GB/T 5211.4
(See A.2);
--- Replaced ISO 291 with the informative reference GB/T 2918 (see B.7);
--- Changed the MVR determination cycle method for PA12 in Figure B.1 of ISO /ASTM 52925.2022 (see B.7).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Additive Manufacturing Standardization Technical Committee (SAC/TC562).
This document was drafted by. Shenzhen Jinshi 3D Printing Technology Co., Ltd., Yukexler Plastic Products (Taicang) Co., Ltd., Yanqi Lake
Basic Manufacturing Technology Research Institute (Beijing) Co., Ltd., Shandong Chuangrui Laser Technology Co., Ltd., Hunan Huashu High-Tech Co., Ltd.,
Aerospace Additive Technology (Beijing) Co., Ltd., China Machinery Research Institute of Standards and Technology (Beijing) Co., Ltd., China Aviation Manufacturing Technology Research Institute,
Harbin Engineering University, Xi'an National Institute of Additive Manufacturing Co., Ltd., Wuxi Inspection and Certification Institute, Changzhou Industrial Internet
Research Institute Co., Ltd.
The main drafters of this document are. Jiang Zexing, Cui Lu, Xiao Chengxiang, Li Zhe, Wen Jiebin, Zhang Wei, Wang Yuxuan, Wan Hongyuan, Sun Wenyao, Liu Rongzhen,
Chang Bai and Zhang Chonghao.
Polymer additive manufacturing raw materials
Identification of Materials for Laser Powder Bed Fusion
1 Scope
This document specifies the sampling, factory inspection report, factors affecting forming performance and factors affecting parts quality of polymer laser powder bed fusion materials.
Parts quality factors.
This document is applicable to the identification of polyamide 12 (PA12) and polyamide 11 (PA11) for laser powder bed fusion and is not applicable to other laser
Identification of polymers for powder bed fusion.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 35351 Terminology for Additive Manufacturing
3 Terms and Definitions
The terms and definitions defined in GB/T 35351 apply to this document.
4 Symbols and abbreviations
4.1 Notation
The symbols in Table 1 apply to this document.
Table 1 Symbols
Symbol physical quantity unit
DV10 Particle size μm corresponding to the cumulative distribution of powder volume fraction reaching 10%
DV50 Particle size μm corresponding to the cumulative distribution of powder volume fraction reaching 50%
DV90 Particle size μm corresponding to the cumulative distribution of powder volume fraction reaching 90%
HR Hausner Ratio -
sr Repeatability standard deviation -
sR Standard deviation of reproducibility -
TB forming temperature range ℃
Tic initial crystallization temperature ℃
Tim initial melting temperature ℃
...
