GB/T 47094-2026 Officially Implemented: Interpretation of the National Standard for Zinc and Zinc Alloy Powders Used in Additive Manufacturing

01. What is GB/T 47094-2026?

The standard name of GB/T 47094-2026 is: “Zinc and Zinc Alloy Powders for Additive Manufacturing” This standard is aimed at Zinc and zinc alloy powders for additive manufacturing Establish a national technical standards system to provide a unified basis for product evaluation for powder manufacturers, additive manufacturing equipment suppliers, research institutions, and downstream application enterprises.

From a supply-chain perspective, zinc-alloy additive manufacturing encompasses: Zinc and zinc alloy materials → spherical metal powder → powder bed spreading → laser melting → formed part → post-processing → performance evaluation, Therefore, powder quality is one of the critical material factors that influence the stability of zinc‑alloy LPBF processing and the quality of the final parts.

02. Why is GB/T 47094-2026 worth paying attention to?

Throughout the development of the metal additive manufacturing industry, corresponding powder standards have been progressively established for various metallic materials. At present, the national standards system has already encompassed a range of standards related to additive‑manufacturing metal powders, such as:

• GB/T 44151-2024 “Magnesium and Magnesium Alloy Powders for Additive Manufacturing”
• GB/T 44239-2024 “Aluminum Alloy Powder for Additive Manufacturing”
• GB/T 45766-2025 “Silver and Silver Alloy Powders for Additive Manufacturing”
• GB/T 47094-2026 “Zinc and Zinc Alloy Powders for Additive Manufacturing”

The National Standards Information Platform has also included GB/T 47094-2026 in the national standards system related to additive manufacturing. This means that, Additive manufacturing materials for zinc and zinc alloys are gradually establishing standardized systems comparable to those for metals such as magnesium, aluminum, nickel–titanium, and silver.

For powder purchasers, the establishment of national standards enables companies to move beyond simply comparing “particle size” and “price” and instead shift toward a more comprehensive evaluation: Chemical composition + particle size distribution + powder morphology + flowability + density + oxygen content + batch-to-batch stability + testing capabilities

03. What key powder quality factors does GB/T 47094-2026 focus on?

For zinc and zinc alloy powders used in metal additive manufacturing, powder performance is not determined by a single parameter but is instead influenced by multiple factors working in concert.

1. Chemical Composition

The chemical composition directly influences both the material system of zinc alloy powder and the performance of the final printed part.

The GB/T 47094‑2026 standard establishes a unified testing protocol specifically for zinc powders produced via LPBF in the particle size range of 15 μm to 53 μm. All powders must meet the following specifications: impurity levels of Fe ≤ 0.005%, Pb ≤ 0.005%, Cd ≤ 0.003%, and oxygen content ≤ 0.10% (for F‑Zn). In medical applications, this high‑purity threshold ensures that implants exhibit no cytotoxicity. For the F‑Zn‑Cu alloy, the copper content is maintained within the range of 0.20% to 3.0%, balancing mechanical strength with antibacterial performance.

Therefore, powder suppliers must establish robust control over raw materials, melting and alloying processes, and atomization-based powder production, while ensuring batch-to-batch consistency through chemical composition analysis.

2. Particle Size Distribution

LPBF typically requires metal powders with good flowability and powder‑spreading properties.

Particle size distribution affects:

• Powder spreading uniformity
• Powder flowability
• Degree of compaction of the powder layer
• Interaction between laser and powder
• Molten pool stability
• Internal defects in formed parts

Therefore, zinc powder for additive manufacturing cannot be simply regarded as “the finer, the better.”

For LPBF, what is even more important is to obtain Particle size distribution matched to the equipment, powder spreading system, and process parameters. 。

3. Powder Sphericity and Particle Morphology

Sphericity is one of the key parameters for evaluating gas-atomized metal powders.

Well‑shaped spherical particles generally exhibit superior flowability and powder‑spreading performance, while also mitigating the adverse effects of irregular particles on powder packing and the spreading process.

Therefore, when selecting zinc alloy 3D printing powders, purchasers are advised to consider the following factors:

Factors such as particle morphology, sphericity, satellite particles, agglomerated particles, and hollow particles.

4. Powder Flowability and Density

Powder flowability is closely related to the powder spreading process.

If the powder exhibits insufficient flowability, it may adversely affect its conveyance, spreading, and uniform distribution within the equipment.

Meanwhile, the tapped density and the loose‑packed density can reflect the packing characteristics of powder particles from different perspectives.

Therefore, a comprehensive evaluation of zinc‑alloy LPBF powders cannot rely on a single metric; instead, a complete powder‑property assessment framework should be established.

5. Oxygen Content and Impurity Control

For reactive metal powders, controlling oxygen content is a critical concern throughout powder production and additive manufacturing.

Oxygen and other impurities may affect:

• Powder surface condition
• Laser melting behavior
• Molten pool stability
• Internal defects in formed parts
• Material Property Consistency

Therefore, high-quality zinc and zinc-alloy additive manufacturing powders must be… Raw materials, smelting, atomization, sieving, packaging, and storage & transportation Conduct full-process control at each stage.

Note: The specific chemical composition, oxygen content, particle size, density, and flowability limits shall be governed by the official text of GB/T 47094‑2026 and the corresponding product grade requirements.

04. Why is Tangshan Weihao participating in GB/T 47094-2026?

According to information published on the National Standards Information Public Service Platform, Tangshan Weihao Magnesium Powder Co., Ltd. has been listed as one of the principal drafting units for GB/T 47094-2026. This means that Tangshan Weihao is not only a manufacturer of metal powders but has also participated in the development of the national standard for zinc and zinc‑alloy powders used in additive manufacturing.

For a long time, Tangshan Weihao has been focused on Research and Development of Atomized Spherical Metal Powders and Their Industrial Production The company has accumulated relevant experience in metal powder production, particle size control, powder morphology, and quality inspection. During the development of the GB/T 47094‑2026 standard, the enterprise participated in related technical work, providing industry‑specific data and technical support to inform the standard’s formulation.

This standard was developed with the participation of more than 40 organizations, including universities, equipment manufacturers affiliated with central state-owned enterprises, and leading medical device companies. Tangshan Weihao provided extensive raw measurement data on atomized zinc powder, which underpinned the formulation of the standard’s provisions regarding particle size, oxygen content, and flowability.

• Utilizing a proprietary atomization process, the sphericity remains stable at 88%–95%, with a hollow-particle content as low as 0.2%.
• We mass-produce the two major national-standard grades, F‑Zn and F‑Zn‑Cu, and can also customize bismuth‑based alloy powders.
• Equipped with a comprehensive testing system comprising ICP, oxygen–nitrogen analyzers, and particle size analyzers, we issue national‑standard‑compliant quality inspection reports for every batch.
• The powder is compatible with the full range of LPBF metal 3D printers from multiple brands, addressing industry‑wide challenges such as porosity and thermal cracking.

05. From “Powder Production” to “Standardized Powder Solutions”

For additive manufacturing companies, purchasing metal powder is more than just acquiring a raw material. What truly affects the printing outcome is:

Powder→Process→Machine→Part That is: Powder → Process → Equipment → Parts

Therefore, professional additive manufacturing powder suppliers must focus not only on the powder itself, but also on:

• Powder Batch Stability
• Particle size distribution
• Chemical composition
• Oxygen content
• Powder morphology
• Flowability
• Packaging and Storage & Transportation
• Test Report
• Print process adaptation
• Application Validation

This also underscores the significant importance of further standardizing the market for zinc and zinc‑alloy additive‑manufacturing powders following the implementation of GB/T 47094‑2026.

06. What does GB/T 47094-2026 mean for the zinc alloy 3D printing industry?

Previously, China lacked a unified standard for zinc‑based 3D printing powders, leading to issues such as excessive impurities and inconsistent particle size in commercially available powders—problems that can result in non‑compliant medical implants and mechanical property variability in lightweight components. With the implementation of GB/T 47094‑2026, purchasers can now select compliant raw materials based on this national standard. As a participating manufacturer involved in drafting the standard, Tangshan Weihao aligns its powder specifications with these criteria from the source, significantly reducing sample‑testing and scrap costs for equipment manufacturers and medical companies, thereby accelerating the large‑scale adoption of biodegradable zinc‑based implants and lightweight electronic components.

• For powder suppliers: the standard provides a clearer basis for evaluating product quality, helping companies establish standardized production and testing systems.
• For 3D printing equipment manufacturers: standardized powders can help establish a more robust material–equipment–process alignment system.
• For research institutions: A standardized method for evaluating powder quality facilitates the comparison of material and process data across different research teams.
• For terminal manufacturing enterprises: purchasers can establish a more robust supplier evaluation and incoming material inspection system in accordance with standard requirements.

07. When procuring zinc-alloy LPBF powders, what should companies pay attention to?

For companies developing zinc and zinc‑alloy 3D printing projects, it is recommended to evaluate powder suppliers from the following aspects:

For medical and high-reliability applications, it is recommended to place additional emphasis on material batch traceability, the completeness of test reports, and the verification of the final component’s performance.

Conclusion

The implementation of GB/T 47094-2026 marks an important step in the standardization of zinc and zinc‑alloy additive manufacturing powders in China. For powder‑manufacturing enterprises, standards not only signify “meeting specified criteria,” but also entail establishing a stable, traceable, and verifiable system for powder production and quality inspection. As one of the principal drafting organizations for GB/T 47094‑2026, Tangshan Weihao Magnesium Powder Co., Ltd. We will continue to leverage our R&D and production capabilities in atomized spherical metal powders to provide the additive manufacturing industry with more stable, standardized, and verifiable metal powder material solutions.

Frequently Asked Questions (FAQ)

Q1: What is GB/T 47094-2026?

GB/T 47094-2026 is the Chinese national standard titled “Zinc and Zinc Alloy Powders for Additive Manufacturing.” This standard was published on January 28, 2026, and came into effect on August 1, 2026.

Q2: What materials does GB/T 47094-2026 primarily address?

This standard is aimed at Zinc and zinc alloy powders for additive manufacturing , to standardize the product quality and testing/evaluation of relevant additive manufacturing powders.

Q3: What is the relationship between GB/T 47094-2026 and LPBF?

This standard pertains to zinc and zinc‑alloy powders for additive manufacturing and is closely related to the use of such powders in metal additive manufacturing. For companies employing laser powder bed fusion (LPBF) technology to 3D print with zinc and zinc alloys, powder quality control constitutes a critical foundation for establishing stable printing processes.

Q4: Which 3D printing processes are covered by GB/T 4709-2026?

The core is oriented toward the LPBF laser powder bed fusion process.

Q5: Why is it important to pay attention to sphericity and particle size distribution in zinc alloy 3D printing powders?

Because the morphology and particle size distribution of powder particles influence powder flow, powder spreading, packing, and laser melting behavior, they are critical factors in evaluating LPBF metal powders.

Q6: When procuring zinc alloy powder in accordance with GB/T 47094-2026, what information should be requested from the supplier?

It is recommended to require suppliers to provide at least Chemical composition, particle size distribution, powder morphology, flowability, bulk density, oxygen content, and batch test reports. and confirm the applicable standard requirements based on the specific product grade and application scenario.

Q7: Can Tangshan Weihao supply F‑Zn‑Cu zinc‑copper alloy powder that complies with GB/T 47094‑2026?

Certainly. Our company is a standard participating manufacturer, producing zinc‑copper powder with a copper content ranging from 0.20% to 3.0%, and providing a complete set of test reports that comply with the national standard limits.

Q8: What precautions should be taken when storing and transporting zinc powder for additive manufacturing?

Must be vacuum-sealed, protected from light and moisture, and kept away from sources of ignition. Handle with care to avoid crushing or friction that could trigger spontaneous combustion; packaging must bear fire‑proof and moisture‑proof labels.