Metallurgy Standards Search: Standard List - China Standards Online Service Network
The China Standards Online Service Network has recently added three national standards related to additive manufacturing metals, covering inspection methods for directed energy deposition processes, technical specifications for titanium alloy parts, and requirements for dedicated titanium powders. Among them, GB/T 43615-2023 "Additive Manufacturing - Ultrasonic Testing Methods for Directed Energy Deposition Metal Formed Parts" was issued and implemented on December 28, 2023; GB/T 42622-2023 "Additive Manufacturing - Titanium and Titanium Alloy Powders for Laser Directed Energy Deposition" was issued on May 23, 2023, and implemented on December 1; and GB/T 47005-2026 "Additive Manufacturing - Technical Specifications for Laser Directed Energy Deposition Titanium Alloy Parts" was issued on January 28, 2026, and is scheduled for implementation on August 1, 2026.
The three standards have clear divisions of responsibility: GB/T 43615-2023 specifies the general requirements, test pieces, reference sensitivity calibration, inspection process, and result evaluation for ultrasonic testing of directed energy deposition metal formed parts, and applies to formed parts with cross-sectional thicknesses from 6 mm to 300 mm; GB/T 42622-2023 sets out the technical requirements, test methods, inspection rules, packaging and storage, and order content for titanium and titanium alloy powders used in laser directed energy deposition; GB/T 47005-2026 covers the trial production, production, and acceptance of six titanium alloy grades—TA15, TC4, TC11, TC17, TC18, and TC21—and specifies test methods and delivery preparation.
From powder to formed parts to non-destructive testing, the standards chain is closing. The powder end now has a unified basis for ordering and inspection, the parts end locks down grades and acceptance rules, and the testing end provides an ultrasonic method with a clear applicable thickness range. This means that quality determination for laser directed energy deposition titanium alloy parts will gradually shift from bilateral supplier-buyer agreements to national standard endorsement, and both powder batch consistency and internal defect control in formed parts are being brought onto a standardized track.
Value for powder buyers: ① Check titanium powder test methods and inspection rules against GB/T 42622-2023, and incorporate accompanying documents and order terms into procurement contracts; ② For grades such as TA15, TC4, TC11, TC17, TC18, and TC21, secure powder sources in advance that meet the acceptance requirements of GB/T 47005-2026; ③ Pay attention to ultrasonic testing requirements for the 6 mm to 300 mm thickness range, and work backward to match powder quality with the process window.
2026-10-24
ESA and ArianeGroup Successfully Test New Rocket Engine "Greta": Additive Manufacturing Combustion Chamber Design Proves Key | Industrial 3D Printer Portal ShareLab – ShareLab NEWS
The European Space Agency (ESA) and ArianeGroup have completed the first round of testing for their jointly developed new rocket engine, Greta, validating its stable operation capability. The engine's combustion chamber is manufactured using metal 3D printing, enabling structural designs difficult to achieve with conventional processes. Testing took place from July to November 2025 in Trauen, Germany.
The Greta combustion chamber is a 30 cm tall laser powder bed fusion (LPBF) formed part with complex cooling channels directly integrated into the wall interior. The coolant circulates just millimeters from the combustion zone, withstanding combustion temperatures exceeding 2000°C. The propellant has been switched to a hydrogen peroxide and ethanol blend, replacing the previously widely used hydrazine-based propellants. Testing included continuous combustion exceeding 40 seconds, multiple restarts, and shutdown conditions, all of which performed stably. The next phase will invest approximately 3 million euros, partnering with Safran Aero Boosters, the Aviation Institute, and InPraise Systems, to advance the prototype toward a flight-ready engine.
This case elevates the value of LPBF for aerospace hot-section components to a new level: integrated forming of cooling channels and structure means designs no longer accommodate manufacturing constraints but are driven by functional requirements. For the metal powder supply chain, the requirements for powder sphericity, oxygen content, and batch consistency in combustion-chamber-grade LPBF parts will tighten further as such projects move from prototypes to flight parts.
Value for powder buyers: (1) Pay attention to batch stability and oxygen content metrics of superalloy powders for LPBF; aerospace combustion chamber orders tolerate far less powder inconsistency than general industrial parts; (2) Proactively evaluate supply sources for fine-particle-size, high-sphericity powders; forming 30 cm-class thin-walled complex channels places high demands on powder flowability; (3) Confirm powder reuse cycles and performance degradation data with suppliers; flight-part certification typically requires complete powder lifecycle records.
2026-10-24
NSTL National Science and Technology Library - Foreign Literature and Chinese Literature
Among the literature recently indexed by the National Science and Technology Library (NSTL), a study by Xu Lili and Li Jingwei published in Aerospace Materials & Technology, 2026 Issue 2, focuses on a 3D-printed satellite engine mount flange and upper joint, manufactured from AlSi10Mg aluminum alloy using laser melting technology. The parts were evaluated through mechanical property testing of furnace-following specimens, X-ray and fluorescent inspection, adhesive tensile shear strength testing, tube shear tests, and high-temperature static loading tests. The results show that the vibration test data of the 3D-printed joint bracket and engine assembly are superior to those of the old braided joint bracket, and the high-temperature tube shear failure load is significantly higher than the qualification-level load. Another study indexed in the same period focuses on a lightweight satellite engine mount base plate, using TC4 titanium alloy for laser additive manufacturing, with emphasis on optimizing laser processing parameters and forming processes; the base plate was additively manufactured and passed mechanical test evaluation. The two works cover aluminum alloy and titanium alloy material routes respectively, verifying the process feasibility of laser additive manufacturing for satellite load-bearing structural components, with inspection covering internal quality, bonding quality, and structural stability. For the metal additive manufacturing supply chain, load-bearing parts such as satellite engine mounts have high requirements for powder batch consistency, oxygen content, and sphericity; the stable supply capability of AlSi10Mg and TC4 powders directly determines the mechanical performance of formed parts. The comparative data between furnace-following specimens and qualification-level loads in the literature provide a reference acceptance approach for powder buyers evaluating supplier batch stability. Value for powder buyers: 1) Focus on batch consistency of AlSi10Mg and TC4 powders and require suppliers to provide mechanical data for furnace-following specimens; 2) Include oxygen content and sphericity in incoming inspection indicators to match the powder flowability requirements of laser melting processes; 3) Prioritize powder manufacturers with a supply record for aerospace load-bearing parts to reduce process validation risks.
2026-10-24