Steel or cast iron stamping dies: which to choose
Why large dies are built on cast iron and smaller ones from tool steel, and what it changes for cost, lead time, rigidity and modifications.
Two ways to build a die
A steel die is built from machined plates and blocks of tool steel. A cast die is built on cast iron bases and blocks, poured from a pattern and then machined, with hardened steel inserts on the working surfaces.
When cast iron makes sense
Cast construction suits large dies: transfer and tandem dies for body and structural parts. It gives rigidity and damping for large surfaces at a reasonable weight and cost.
When steel makes sense
Steel construction suits small and medium dies, progressive dies and dies that must be built quickly, since no casting is needed.
Inserts and wear parts
In both cases, the parts that cut and form, such as trim steels, punches and forming inserts, are made of hardened tool steel, often coated for high-strength materials.
Your die standard decides
Most OEMs specify the construction in their die standard. We follow it, and advise when the choice is open.
A project in mind?
Dies, a turnkey line or series production: tell us about your project and we will get back to you.