Maiterio Takes on 1Cr13, 2Cr13 & 4Cr13 Martensitic Stainless Steel Ring Forgings

A New Milestone in Stainless Steel Ring Forging

This year, Maiterio reached a new milestone in ring forging materials by producing 1Cr13, 2Cr13, and 4Cr13 martensitic stainless steel ring forgings for the first time.

We have extensive experience in producing ring forgings from carbon steel, alloy steel, and other materials. However, these three stainless steel grades were new to us. From the initial heating and forging stages to final forming, we needed to understand their material characteristics and adjust the forging process accordingly.

Challenges in Forging Martensitic Stainless Steel

One of the biggest challenges with these martensitic stainless steels is their high forging difficulty and increased risk of cracking.

During forging, 1Cr13, 2Cr13, and 4Cr13 are sensitive to heating temperature, soaking time, deformation amount, forging sequence, and cooling conditions.

This means that standard forging parameters cannot simply be applied. The process needs to be adjusted according to the actual condition of the material during production.

From the First Attempt to Process Development

Without previous production experience with these materials, we began developing our process step by step with the first batch.

From initial heating to the reduction amount, deformation sequence, and coordination between forging passes, adjustments were made according to the actual condition of each billet.

Our focus was not simply on whether the material could be forged, but on how to achieve sufficient deformation while reducing the risk of cracking and maintaining stable forming throughout the process.

Through continuous production, observation, and process adjustment, we gradually accumulated practical production experience in 1Cr13, 2Cr13, and 4Cr13 martensitic stainless steel ring forgings.

New Materials, New Capabilities

This production was more than simply completing a new batch of ring forgings. It also represents an expansion of Maiterio’s capabilities in material applications.

From having no prior experience in these materials to achieving formal production and stable batch production, Maiterio has accumulated practical production experience in a new range of forging materials.