HSS blades and TCT blades: the differences explained by Moreschi

The well-known Italy-based manufacturer Moreschi S.r.l., specializing in circular and bandsaw blades, offers a wide range of cutting solutions designed for specific materials and industrial applications. In this article, we compare two blade types: HSS (High Speed Steel) and TCT (Tungsten Carbide Tipped).

HSS and TCT blades: a comparison of technical characteristics

All Moreschi blades are produced from hot- or cold-rolled raw sheet metal, using only certified, high-quality materials. Depending on customer needs, the technical department develops customized sharpening geometries with variable pitch and cutting angles.

The blade teeth can be made of carbide or cermet, an advanced material composed of ceramic and metallic components, capable of delivering high performance across a wide range of materials.

Differences between HSS and TCT blades

HSS blades are made entirely of high-speed steel, such as DMo5 (M2) DIN 1.3343 and Co5 (M35) DIN 1.3243—molybdenum- and tungsten-based alloys, with cobalt added in the latter.

TCT blades, by contrast, have carbide teeth made by sintering tungsten carbide (WC) with cobalt (Co). Grades and grain sizes vary by application to enhance durability and cutting performance.

Functionally, the difference is key: HSS blades cut with the blade body, while TCT blades cut using their carbide-tipped teeth. They often run on different machines and aren't always interchangeable, as they require distinct cutting parameters and conditions.

When to choose HSS or TCT blades?

Replacing an HSS blade with a TCT blade can be advantageous in the following cases:

– the machine is compatible with TCT blades;
– there is a need to increase productivity;
– high surface finish standards are not required;
– the material to be cut is not well-suited to HSS blades.

It is essential to keep in mind that the final result depends on numerous factors. To find the most suitable solution for your production needs, please contact the Moreschi team using the contact details available on its online stand. The Moreschi technicians will be happy to recommend the most suitable blade for your application.