What Multi-Material Wire Arc Additive Manufacturing Means for Industry
Wire arc additive manufacturing (WAAM) is a form of metal 3D printing that uses welding wire and an electric arc, often mounted on industrial robots, to deposit large metal structures layer by layer with relatively low equipment cost and high material efficiency compared to powder‑based systems. At the same time, multi-material metal 3D printing refers to building a single component from two or more different metal alloys in one continuous process, allowing engineers to place strength, corrosion resistance, or toughness only where needed instead of machining those features later from separate parts or over‑engineered stock. Together, these approaches promise industrial metal deposition at production scale, not just prototypes, by combining large build volumes, flexible alloys, and the digital control needed to reach the repeatability and process stability required for certified components in demanding environments.
DEEP Manufacturing and Fortius Metals: A Strategic WAAM Partnership
DEEP Manufacturing and Fortius Metals have launched a joint project to build a multi-material metal cylinder on DEEP Manufacturing’s synchronized multi-robot WAAM platform. The program starts with test samples and a smaller cylinder, leading up to a full-scale build planned from mid-June to early July 2026, with both companies sharing progress as they go. DEEP Manufacturing recently opened a new USD 10 million (approx. RM46,000,000) facility in Houston, intended to shorten lead times for large-format WAAM parts and bring industrial metal deposition closer to key customers. Fortius contributes simulation, toolpath design, and advanced welding wires that contain nanoparticle reinforcements to improve strength and fatigue performance. The goal is not only to print a complex structure, but to prove that WAAM production scale can meet the precision, monitoring, and process control standards that industrial environments expect from metal AM partnerships.
From Habitats and Pressure Vessels to High-Integrity Multi-Alloy Parts
DEEP Manufacturing is targeting large, safety-critical applications such as pressure vessels and marine habitats, where certification and quality outweigh raw part cost. The company aims to validate a DNV-approved process so that WAAM-built vessels can be used in subsea construction, including wind farms, wave energy projects, sea floor mining, and defense infrastructure. According to 3DPrint.com, subsea marine construction is a “$30 billion industry,” hinting at the scale of opportunity if multi-material metal 3D printing can reliably meet codes and standards. DEEP Manufacturing expects to print habitats for its parent organization while also supplying industrial metal deposition services for external clients. For Fortius Metals, whose DED wires originated from Elementum 3D research and have already attracted Air Force contracts, the collaboration embeds its materials and design tools at the heart of a new WAAM supply chain focused on high-integrity, human-rated structures.
Why Multi-Material Capabilities Change the Economics of Metal AM
Multi-material metal 3D printing with WAAM allows engineers to place different alloys within one structure, tailoring properties region by region instead of overbuilding the entire part. For example, corrosion-resistant alloys can be deposited only on external surfaces of a pressure vessel, while higher-strength or fatigue-optimized materials reinforce joints, flanges, and attachment points. This approach can reduce post-processing, machining, and waste that are common when separately producing and joining single-alloy components. Fortius Metals’ simulation and toolpathing help predict how these dissimilar materials will behave during deposition, while DEEP Manufacturing’s synchronized robots keep the process coordinated at production scale. Together, these tools move WAAM beyond proof-of-concept cylinders and coupons toward repeatable, qualified parts. As processes stabilize, multi-material capabilities become a design asset, enabling lighter, more efficient components rather than simply substituting 3D printing for conventional fabrication.
Robot-Driven WAAM and the Shift to Production Volumes
A core advantage of wire arc additive manufacturing is its use of commercial robot arms instead of custom laser systems, which helps scale build volumes without the cost and complexity of traditional metal AM machines. DEEP Manufacturing’s synchronized multi-robot setup is designed so several arms can deposit metal on a single structure, increasing throughput while maintaining coordinated control. Fortius Metals strengthens this platform with specialized DED wires and modeling expertise, aiming to shorten the path from research to qualified, industrial components. The upcoming full-scale multi-metal cylinder is intended as a proof that WAAM production scale can deliver the precision, monitoring, and repeatability needed for serial manufacturing. If the project succeeds, it suggests that strategic metal AM partnerships between equipment builders and material specialists are a practical route for turning large-format, multi-alloy printing into a commercially viable option at production volumes.
