ORNL & INL Wire Arc AM Boosts 3D Printing Market

ORNL and Idaho National Lab Demo Wire Arc 3D Printed Pressure Vessels for Nuclear Supply Chain 

OAK RIDGE, United States  August 23, 2026  Oak Ridge National Laboratory (ORNL) and Idaho National Laboratory (INL) have launched a landmark collaboration to strengthen the domestic pressure-vessel supply chain using wire arc additive manufacturing (WAAM), a development that signals accelerating institutional investment in the global 3D Printing Market and its application across nuclear, defense, and energy sectors. 

The two U.S. national laboratories publicly demonstrated a nuclear-grade pressure vessel at the Materials and Manufacturing Innovation Days (M2IND) event, marking a significant step toward scalable, AI-integrated additive manufacturing for critical infrastructure components. According to Next Move Strategy Consulting, the global Additive Manufacturing (AM) market was valued at USD 20.51 billion in 2023 and is projected to reach USD 83.13 billion by 2030, expanding at a CAGR of 20.6% from 2024 to 2030. 

The demonstration vessel was printed in a nuclear-grade steel alloy using ORNL's three-robotic-arm MedUSA platform, which employs molten metal wire to build large-format components. INL contributed nuclear reactor expertise and artificial intelligence capabilities, while ORNL provided additive manufacturing research infrastructure and access to its Manufacturing Demonstration Facility. 

Central to the initiative is the concept of "born-qualified" pressure vessels components validated through data collected during the printing process itself, rather than through conventional post-production testing. This approach is designed to compress qualification timelines, reduce inspection costs, and enable faster deployment of additively manufactured parts in highly regulated environments. 

"We would like to achieve born-qualified pressure vessel components using data gathered during printing to confidently assess their worthiness for extreme environments," said Patxi Fernandez-Zelaia, lead researcher at ORNL. INL's advanced manufacturing group lead, Jorgen Rufner, added that the project integrates AI and data science with 3D printing to evaluate part performance in real time rather than after production. 

The collaboration follows ORNL's MedUSA platform printing a small nuclear pressure vessel in July 2026, and Antares Nuclear Inc.'s R1 Mark-0 microreactor reaching criticality at INL in June 2026. The labs are now applying the WAAM approach to neutron sensor brackets for Antares, with broader applications targeted across chemical refining, oil and gas, defense, and aerospace sectors. 

Key Highlights: 

• ORNL and INL demonstrated a nuclear-grade wire arc additively manufactured pressure vessel at the M2IND event, using ORNL's three-robotic-arm MedUSA platform 

• The collaboration targets "born-qualified" components  parts qualified through in-process data collection rather than post-production inspection  to accelerate qualification cycles in regulated industries 

• INL's AI and nuclear reactor expertise is being integrated with ORNL's Manufacturing Demonstration Facility to enable real-time part performance evaluation during printing 

• Applications extend beyond nuclear to chemical refining, oil and gas, defense, and aerospace, broadening the commercial relevance of the WAAM approach 

Analyst Insight: 

According to analysts at Next Move Strategy Consulting, the ORNL-INL collaboration represents a strategically significant development for the global additive manufacturing market, which is on track to reach USD 83.13 billion by 2030 at a CAGR of 20.6%. NMSC analysts note that the integration of AI-driven in-situ quality assurance with wire arc additive manufacturing directly addresses one of the most persistent barriers to industrial-scale AM adoption: the cost and complexity of post-production qualification. As national laboratories and defense-adjacent institutions accelerate investment in production-ready AM frameworks, the technology's transition from prototyping to certified, mission-critical manufacturing is expected to gain measurable momentum across energy, defense, and heavy industry verticals. 

Industry Outlook: 

The ORNL-INL wire arc additive manufacturing initiative reflects a broader institutional shift in how governments and research bodies are approaching the industrialization of 3D printing for critical infrastructure. By embedding AI-driven qualification directly into the manufacturing process, the collaboration offers a replicable model for reducing the regulatory friction that has historically limited AM adoption in nuclear, defense, and energy applications. As the global additive manufacturing market continues its trajectory toward USD 83.13 billion by 2030, initiatives that bridge the gap between laboratory-scale innovation and certified production are expected to play an increasingly central role in shaping the competitive landscape. The extension of the WAAM framework to commercial sectors such as oil and gas and chemical refining further underscores the technology's potential to reshape domestic supply chain resilience across multiple industries. 

Source: VoxelMatters

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Prepared By: Sanyukta