Northern Iron, a foundry in St. Paul, MN – A full service iron foundry with in-house metallurgical lab and computerized solidification modeling. We produce grey castings, austempered ductile and ductile castings to the standards required including ASTM A536, SAE J434, ASTM A48, SAE J431. Remarkable solutions.

651-778-3300 Mon - Fri 7:00am - 3:30pm 867 Forest Street, St. Paul, MN 55106

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Northern Iron

We are your single-source solution for machined castings that are ready to assemble.

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Sep

We are TPG Casting accredited

Northern Iron/Lawton St. Paul is proud to be TPG Casting accredited. The not-for-profit Performance Review...

About us

We are a full-service foundry specializing in high-quality metal castings and machined parts. The Company’s uncompromising commitment to quality and customer satisfaction has established it as a preeminent supplier of heavy industrial parts to large locomotive, construction, and agricultural industrial OEMs.

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Why choose us?

Quality castings

We produce the highest quality iron castings in our five-furnace foundry. Grey, ductile, and austempered ductile iron castings up to 250 lbs.

In house machining

Let us add some value to your iron castings by providing a machined casting. Our four axis machines are capable of tolerances to ±0.0005 in.

Finishing

Production line-ready components can save you a lot of time and money. Our St. Paul location offers paint, subassembly, and shipping to fit your needs.

Welcome to Northern Iron