Grades

Stainless Steel

Austenitic

Steels with a Chromium content between 17% and 26%, Nickel between 7% and 35% and Carbon 0.15% max which cannot be stiffened by quench hardening but only through cold working (eg. cold drawing). Corrosion resistance is higher compared to other stainless steels and they are non-magnetic unless cold worked.

Martensitic

Steels with a Chromium content of 11% to 18% and a Carbon content of 2% maximum, with additional small quantities of other elements. In order to improve both mechanical properties and corrosion resistance, they are heated to an appropriate temperature, 950C – 1050C, followed by suitable quenching and tempering.
Martensitic steels are attracted to a magnet.

Ferritic

Steels with a Chromium content higher than 10.5% and a Carbon of 0.15% maximum. Unlike martensitic steels these grades cannot be stiffened by quench hardening but only through cold Ferritic steels are attracted to a magnet.

Duplex

These steels have a Cr content higher than 16% with Ni of 4-6% and Mo of 1.5-3%. Their dual austenitic and ferritic grain structure (hence the term duplex) means that they have the good mechanical properties of austenitic stainless steels but with a superior resistance to stress corrosion and pitting.

Superduplex

Characterised by higher contents of Cr, Mo and N than Standard duplex steels, resulting in increased corrosion resistance, these steels were developed for applications in aggressive chloride environments.

Nickel Alloys

More and more requests coming from new technologies and industries for enhanced performance and resistance to aggressive environments has driven the development of Nickel Alloys. This encompasses iron base, nickel base and cobalt base alloys.

By varying the combination of different chemical elements a wide range of useful properties can be achieved. These include: exceptional mechanical properties, high corrosion resistance, high rupture strength, toughness, metallurgical stability, good fabricability, creep strength, thermal shock & cavitation resistance, and good fatigue life.

Titanium

The unique and interesting chemical, mechanical and physical properties of titanium and related alloys leads to its use in a wide range of applications, such as Aerospace, Chemical processing, Oil & Gas, Electrochemical industry, Medical & surgical devices, Automotive industry, marine industry, desalination and desulphurization plants, food and pharmaceutical industry.

Valbruna specialises in the production of the following grades: