Boston Metal, a technology company redefining global metals production, announced it has raised $51 million in a convertible note investment from existing investors including BHP Ventures, Breakthrough Energy Ventures, Piva Capital and SiteGround. Underscoring sustained investor confidence in Boston Metal's team, technology and dual-business unit strategy, funds from the note will support the deployment of the second phase of its critical metals plant in Brazil, slated to come online in mid-2026, and reinforce the company's continued development of its green steel solution.