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GB/T 45868-2025Additive manufacturing — Specification for titanium alloy components by laser powder bed fusion (English PDF)

增材制造激光粉末床熔融钛合金制件技术规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 1, 2025

Implementation date

November 1, 2025

Scope

GB/T 45868-2025 is the English-translated version of 增材制造激光粉末床熔融钛合金制件技术规范.

GB/T 45868-2025 is the Chinese national standard covering parts grown layer by layer from TC4 and TA15 titanium powder — the powder itself and the forming process, the delivery heat treatment state, the chemical composition and the mechanical properties, the surface and internal quality checked by radiography and computed tomography, the microstructure and the dimensions, the batch defined as one build, and the recommended annealing and hot isostatic pressing that closes the porosity left by the melt. First edition, under the China Machinery Industry Federation. In force from 1 November 2025. Issued on 1 August 2025, it has been in force since 1 November 2025.

Document preview — GB/T 45868-2025

National Standard of the People's Republic of China

ICS: 25.030
Classification: H60/69

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Technical Requirements1
4.1 Powder1
4.2 Forming process2
4.3 Delivery heat treatment status2
4.4 Chemical composition2
4.5 Mechanical properties2
4.6 Surface quality3
4.7 Internal Quality3
4.8 Microstructure4
4.9 Size4
4.10 Identification4
5 Test methods4
5.1 Chemical composition4
5.2 Mechanical properties4
5.3 Surface quality4
5.4 Internal Quality4
5.5 Microstructure4
5.6 Size4
5.7 Identification4
6 Inspection Rules4
6.1 Batch4
6.2 Inspection items and sampling requirements5
6.3 Determination of test results5
7 Delivery Preparation5
7.1 Packaging, labeling, transportation and storage5
7.2 Quality Certification Documents5
Appendix A (Informative) Recommended Process Parameters for Laser Powder Bed Fusion of Titanium Alloy Parts7
Appendix B (Informative) Recommended annealing and hot isostatic pressing systems for laser powder bed fusion titanium alloy parts8
References9

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.

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: Aerospace Additive Technology (Beijing) Co., Ltd., Beijing Xinjinghe Additive Manufacturing Technology Co., Ltd., Xi'an Jiaotong University Yanqi Lake Basic Manufacturing Technology Research Institute (Beijing) Co., Ltd., Wuxi Inspection and Certification Research Institute, Beijing Hangxing Machinery Manufacturing Co., Ltd.

Company, Beijing Power Machinery Research Institute, Guangdong Hanbang Laser Technology Co., Ltd., Shenzhen Jinshi 3D Printing Technology Co., Ltd., Beijing Yuding Additive Manufacturing Research Institute Co., Ltd., China Machinery Research Institute of Standards and Technology (Beijing) Co., Ltd., Weichai Power Co., Ltd., South China University of Science and Technology, Xi'an National Research Institute of Additive Manufacturing Co., Ltd., China Aerospace Science and Technology Research Institute, AECC Beijing Institute of Aeronautical Materials Institute, Central Research Institute of Shanghai Electric Group Co., Ltd., Shandong Chuangrui Additive Manufacturing Industry Technology Research Institute Co., Ltd., China Aerospace Science and Technology Corporation Aviation Engine Co., Ltd., Beijing University of Science and Technology, Beijing Aikang Yicheng Medical Equipment Co., Ltd., Guangzhou Ruitong Additive Technology Co., Ltd.

Company, Baoji Yongshengtai Titanium Industry Co., Ltd.

The main drafters of this document are: Cui Zhaowen, Li Guangsheng, Fang Xuewei, Xiao Chengxiang, Hu Juan, Wang Zhimin, Ma Rui, Jiao Shikun, Huang Zhenghua, Wang Di, Qian Tingting, Hu Fan, Ni Yunqiang, Jiang Zexing, Chen Zhen, Li Xiaofei, Qian Yuanhong, Zhao Zijun, Fan Enxiang, Lü Zhongli, Liao Huanwen, Zhou Xianglin, Wang Caimei, Sun Yongming and Chen Bingfeng. Additive Manufacturing Technical specifications for titanium alloy parts produced by laser powder bed fusion

1 Scope

This document specifies the technical requirements, test methods, inspection rules and delivery preparation for titanium alloy parts produced by laser powder bed fusion.

This document is applicable to the trial production, production and acceptance of TC4 and TA15 titanium alloy parts manufactured by laser powder bed fusion.

2 Normative references

GB/T 228.1

GB/T 228.2

GB/T 3620.2

GB/T 4698

GB/T 5168

GB/T 5677

GB/T 6414-2017

GB/T 8180

GB/T 9443-2019

GB/T 20967

GB/T 29070

GB/T 34486-2017

GB/T 35351

GB/T 39254-2020

3 Terms and Definitions

The terms and definitions defined in GB/T 35351 and the following apply to this document.

3.1 buildbatch

Forming plate One or a group of parts formed within the same forming cycle of the laser powder bed fusion equipment.

4 Technical Requirements

4.1 Powder

4.1.1 TC4 and TA15 powders for laser powder bed fusion of titanium alloys shall comply with the requirements of Class I FTC4 and FTA15 in GB/T 34486-2017.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 228.2 · GB/T 4698 · GB/T 5677 · GB/T 6414-2017 · GB/T 9443-2019 · GB/T 20967 · GB/T 35351

Editions of GB/T 45868

Edition	Title	Revision	Status
GB/T 45868-2025	Additive manufacturing - Specification for titanium alloy components by laser powder bed fusion	current edition	Current

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