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Wear resistant austenitic manganese steels

Diaceros commercializes 5 base types of manganese steels, which are always the best match between the different selection factors of a material.

Types of Wear

For a better selection of materials it is usual to consider four fundamental types of wear:
  • Abrasion with violent or very violent shock;
  • Abrasion with medium shock;
  • Abrasion without shock;
  • Abrasion with shock and corrosion combined.

The use of austenitic manganese steels is related with the first two types of abrasion.

In abrasion with violent or very violent shock the abrasive material hits the metal surface with strenght enough to pull out relatively large particles while in abrasion with medium shock, two surfaces rub or bump each other with sufficient force to cause grinding of the abrasive material between them. That way, at a microscopic scale, tensions can develop so high that they provoke the fracture of the most fragile alloy structural cells.

Wear Resistant Alloys selection

The correct choice of material to be used for each case depends on the weighting of several factors that we can highlight:
  • Primary types of wear;
  • Aggregate hardness and granulometry;
  • Importance of shock condition and its relation with tenacity of material;
  • Existence of corrosion and its importance;
  • Comparative economical study of possible solutions.
Simplified characterization of austenitic manganese steels

Manganese steel alloys are commonly used when in presence of average or violent shock and abrasion combination.
Manganese steel alloys are a natural choice because of their strain hardening capacity and high ductility, which makes them perfect for shock and abrasion situations. Within manganese steels, DIACEROS has 5 grades of steel alloys, that can be choosen by their suitability to a greater or lesser predominance of shock or abrasion.

Diaceros offers five types of austenitic manganese steels (FRITENAZ, FRIDUR, FRISUPER, FRISUPERPLUS and FRITENAZ Special) which selection depends on the best match between the different selection factors of materials.

Basically Diaceros has two alloys with 13% Manganese (FRITENAZ and FRIDUR), where FRITENAZ has low Chromium content for very violent shock conditions and parts of greater section and FRIDUR with a 2% Chromium content for situations of violent shock and parts of reduced section. At last DIACEROS offers also three alloys with great hardening capacity, between 15 and 18% Manganese content - the Supermanganese steel alloys (FRISUPER, FRISUPERPLUS and FRITENAZ Special) - which bring great advantages when in presence of average shock and highest abrasion.

Some advantages of our alloys also come from two metallurgical processes used in our casting process:

  • Grain refinement process during casting (before tapping into ladle);
  • Degassing and homogenization treatment with nitrogen in ladle.
Diaceros Alloys - Advantages of using

In terms of efficiency (lifetime) we consider that our alloys will be 5 to 20% above the competition for chemically equivalent alloys.

We are committed to permanent innovation and development in order to achieve even better results with a single commercial purpose:


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Diaceros Portugal, S.A.
Zona Industrial de Montalvo lote 24 e 25
Rua da Industria nÂș 10
2250-273 Montalvo
Phone: 249 410 250
E-mail: geral@diaceros.pt


Diaceros Angola, Lda
Lugar Tandy, Km.25
Município de Viana
E-mail: jorge.fernandes@diaceros.pt

Last update of the site: 09 july 2021