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GB/T 41338-2022Tungsten and tungsten alloy powder for additive manufacturing (English PDF)

增材制造用钨及钨合金粉

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 9, 2022

Implementation date

October 1, 2022

Scope

GB/T 41338-2022 is the English-translated version of 增材制造用钨及钨合金粉.

GB/T 41338-2022 is the Chinese national standard for the tungsten and tungsten alloy powders used in additive manufacturing.

It gives the technical requirements - the chemical composition, the particle size distribution, the morphology, the flowability, the apparent and tap density and the oxygen content - the test methods, the inspection rules, the provisions on marking, packaging, transport and storage, the accompanying documents and the contents of an order.

It applies to tungsten and tungsten alloy powders for additive manufacturing, the material of shielding and high temperature parts. Powder producers and the shops that print with them use it. Issued on 9 March 2022, it has applied since 1 October 2022.

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Document preview — GB/T 41338-2022

National Standard of the People's Republic of China

ICS: 77.160
Classification: H 71

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

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 Technical requirements

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 of Standardization Documents" drafted.

1 Scope

This document specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, Accompanying documents and order form content.

This document applies to tungsten and tungsten alloy powders for additive manufacturing.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 1479.1 Determination of bulk density of metal powders - Part 1: Funnel method

GB/T 1480 Determination of particle size by dry sieving method of metal powder

GB/T 1482 Standard funnel method for the determination of fluidity of metal powders (Hall flowmeter)

GB/T 4324 (all parts) Tungsten chemical analysis method

GB/T 5162 Determination of Tap Density of Metal Powders

GB/T 5314 Powder sampling method for powder metallurgy

GB/T 14265 General Rules for Analytical Methods of Hydrogen, Oxygen, Nitrogen, Carbon and Sulfur in Metallic Materials

GB/T 19077 Particle Size Distribution Laser Diffraction Method

GB/T 35351 Additive Manufacturing Terminology

3 Terms and Definitions

Terms and definitions defined in GB/T 35351 apply to this document.

4 Technical requirements

4.1 Chemical composition

The chemical composition of the product should meet the requirements of Table 1.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 4324

Similar standards

GB/T 13221-2026|GB/T 3458-2026|GB/T 47084-2026|GB/T 47091-2026|GB/T 47094-2026|GB/T 47401-2026

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