*2.2. Abrasion Resistant Plate—ABRECOPLATE*

ABRECOPLATE abrasion-resistant materials are produced in the following formats: plates (straight or beveled, by special order), bars, buttons (in the shape of a dome, octagonal, protecting screws). ABRECOPLATE is a layered material composed of chromium-molybdenum white cast iron, metallurgically connected to a soft-structural steel underlying plate, as detailed in Table 2.


**Table 2.** Chemical composition and physical characteristics of the abrasion-resistant layer of ABRECOPLATE.

ABRECOPLATE's high abrasion-resistance properties are due to the structure of the surface layer. The special heat treatment (hardening throughout) of cast iron allows for the obtainment of a microstructure consisting of chromium-molybdenum carbides in an almost completely martensitic matrix. The substrate of these abrasive plates is a soft-structural steel. Undercoated cast iron is joined by soldering with a soft copper-based binder which ensures adequate stress transfer, shown in Figure 2.

An important advantage of ABRECOPLATE abrasive discs is the content of abrasive material in relation to the primer, which is 3:1.

**Figure 2.** Microstructure of the intermediate layer of ABRECOPLATE cross-section.
