Hertha Metals Raises $134M for Strategic Iron

Hertha Metals has raised a large Series A around an increasingly strategic industrial bottleneck: producing high-purity iron for advanced manufacturing while reducing emissions from conventional steelmaking.

What happened

The company raised approximately $134 million in Series A funding, led by Khosla Ventures and Doerr Capital.

The financing includes a $65 million investment from the US Department of Defense and will support a new facility in Texas.

Hertha is developing production methods for high-purity iron used in rare-earth magnets and steel.

Why it matters

Rare-earth magnet supply chains remain heavily concentrated in China, creating strategic concerns for defence, electric vehicles, robotics and other advanced industries.

High-purity iron is one of the less visible inputs in that ecosystem.

Hertha is attempting to address that supply-chain vulnerability while also reducing emissions from a traditionally carbon-intensive industrial process.

The bigger picture

Deeptech investment is moving upstream into materials and manufacturing.

AI, robotics, defence and electrification all depend on physical inputs that software alone cannot replace.

That is pushing both venture investors and governments toward companies that strengthen domestic industrial capacity.

Hertha's round is notable because it combines private venture capital with direct government participation, reflecting a broader shift in which industrial technology is increasingly treated as both a commercial opportunity and a strategic national capability.