Ultrasonium
Metal manufacturing, faster, cheaper, and more versatile.
Founders
- Jack QiuFounder/CEO
- Hunter BrownFounder
- Chris CarterFounder
- Alexander UrbanskiFounder
Same space
Competitors
Closest in what they build, same category.
Adjacent
Overlapping tags, a different niche.
Forge AutomationW25Software Enabled CNC Parts SupplierShared: hardware, robotics, manufacturingActive
CircuitHubW12On-Demand Electronics ManufacturingShared: hardware, robotics, manufacturingActive
AxalW25We design, assemble, and test custom PCBs fast.Shared: hardware, robotics, manufacturingActive
Shepherd RoboticsF26Robots for high skilled labor powering AI infrastructureShared: hardware, robotics, manufacturingActive
Autumn LabsS24Datadog for industrial robotsShared: hardware, robotics, manufacturingActive
Also from S26 in AI
Batchmates in Summer 2026.
RobocurveS26Evals for robotsActive
DeepReach Inc.S26Network for Physical AI Data BusinessActive
Frontier ComputingS26Frontier grows scalable biological brains as an ML training substrateActive
Libra RoboticsS26Robotic crews for large-scale infrastructure constructionActive
Moving AtomsS26Virtual Reality for Training RobotsActive
NeuromorphicS26Building robots to automate wetlabsActive
About Ultrasonium
The technologies that define this century, including data centers, rockets, satellites, and robots, are built from complex metal parts. As these systems advance, the parts get harder to make. Past a certain complexity, casting and machining stop working, and the advanced methods that remain are slow, expensive, and hazardous. Ultrasonium has invented a new manufacturing method to make these critical parts 15x faster and 75% cheaper than the methods they replace, in the U.S. and at scale. Solid metal feedstock goes in and a finished part safely comes out, controlled by a physical AI layer and novel control processes. The systems that matter most, in aerospace, energy, and compute, are demanding metal geometries that can't be machined or cast and are too expensive and slow to make with incumbent methods, at a moment when domestic manufacturing capacity is a national priority. Our founding team has built and innovated some of the most complex engineering systems known to man: quantum computers, superconductors, nuclear reactors, and novel aerospace alloy processing methods.
Boston, MA, USA
Ultrasonium: questions
Which YC batch was Ultrasonium in?
Ultrasonium was in Y Combinator's Summer 2026 batch (S26).
Is Ultrasonium still active?
Y Combinator lists Ultrasonium as active.
Who founded Ultrasonium?
Ultrasonium's founders, as listed on its YC page: Jack Qiu (Founder/CEO), Hunter Brown (Founder), Chris Carter (Founder), Alexander Urbanski (Founder).
Where is Ultrasonium based?
Ultrasonium lists Boston, MA, USA as its location on YC's directory.
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