Green Crystal

$Green Crystal - Materials for metallurgy and refractory production$

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NFSI® - ALLOYING MATERIAL

BASED ON SILICON NITRIDE

Designed for alloying electrical, transformer grades of steel, and nitrogen-containing steels containing silicon

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ABOUT THE MATERIAL

Purpose: Precise nitrogen introduction in steels with nitride grain boundary pinning; improvement of magnetic characteristics.
Additionally: Materials for cored wire, charge fillers for welding electrodes and surfacing wires with increased nitrogen content

This is a high-tech alloying material developed for precise, efficient, and economical introduction of nitrogen and silicon into liquid steel. Its use is a hallmark of modern, technologically advanced metallurgical production focused on consistently high product quality

PRODUCT APPLICATIONS

Introduction of Nitrogen (N) into steel:

Nitrogen is a powerful alloying element that increases strength, corrosion resistance (especially in austenitic stainless steels), and stabilizes the austenitic structure. However, introducing gaseous nitrogen into the melt is difficult and inefficient — it has poor solubility and can cause defects (pores). NFSi® solves this problem

Introduction of Silicon (Si):

Silicon acts as a deoxidizer (removes oxygen from steel) and a strengthening agent

Alloying Efficiency improvement:

Using silicon nitride is much more efficient and predictable than attempting to introduce nitrogen and silicon separately. The biological assimilation of nitrogen from NFSi® reaches 90-95%, while with gaseous nitrogen blowing this figure can be below 30%

Inclusion Count reduction:

Compared to other nitriding methods, NFSi® results in cleaner metal with fewer non-metallic inclusions

ADVANTAGES

High and Stable Nitrogen Assimilation:

Key advantage. Allows for precise achievement of the target chemical composition

Cost-Effectiveness:

Reduces overall alloying costs due to high efficiency

Convenience and Safety:

Granules are easy to store, transport, and dose. This is safer than working with high-pressure gaseous nitrogen

Steel Purity:

Contributes to producing metal with fewer defects

Improved Mechanical Properties:

Enables production of steel with increased strength, wear resistance, and corrosion resistance

NFSi® — ALLOYING MATERIAL BASED ON SILICON NITRIDE

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OTHER PRODUCTS

NFCr®

— Nitrided Ferrochrome

NFS®

— Hardening Condensed Powders/Mixtures based on silicon nitride (Si₃N₄) and iron silicides

NFV®

— ferrovanadium nitride (VN-α-Fe, melted/sintered)