Allium Engineering

Manufacturing method that applies stainless steel shells to building materials for extended infrastructure durability

Greentown Boston AlumniFounded 2021Visit website

Manufacturing & ProcessingBuilding Materials

[ 01 ]About

Allium Engineering is an early-stage startup focused on creating building materials that don't degrade, enabling critical infrastructure like bridges to reach 100-year lifetimes. Allium has an innovative manufacturing method that introduces a thin shell of stainless steel to existing building materials, such as steel rebar. This manufacturing process can integrate into existing steel production and produce a drop-in replacement for conventional parts.

[ 02 ]Leadership

Steven Jepeal
CEO
Sam McAlpine
Co-Founder and CTO

[ 03 ]In The News

Stainless-Bonded Rebar Debuts on Caltrans Bridge Project

enr.com / Jul 30, 2025

Allium’s Stainless-Clad Rebar Used in California Bridge Deck Rehab, Designed to Deliver 150-Year Durability

hubspotusercontent-na1.net / Jul 1, 2025

Startup enables 100-year bridges with corrosion-resistant steel

mit.edu / May 21, 2025

MIT spinout raises $3M in seed funding for longer-lasting steel

bizjournals.com / Mar 14, 2024

Allium Engineering Is Working To Reduce Steel Carbon Emissions By Two Thirds

carbonherald.com / Sep 6, 2022