Industrial-Grade Ferrochromium Nitride Alloy Powder

Product Specifications

Technical details and manufacturing context for Industrial-Grade Ferrochromium Nitride Alloy Powder

Definition

Industrial-grade ferrochromium nitride alloy powder is a specialized metallurgical additive used to introduce chromium and nitrogen simultaneously into molten steel. This material enhances hardenability, corrosion resistance, and high-temperature strength in alloy steels. It serves as a cost-effective alternative to pure chromium and separate nitrogen sources, improving process efficiency. The powder form ensures rapid dissolution and uniform distribution during steelmaking operations. The alloy is composed of ferrochromium, nitrogen compounds, and binding agents, with a typical chromium content of 60–65% and nitrogen content of 5–8%, as referenced in GB/T 5683. Particle size distribution (D90) ranges from 45 to 150 μm (ISO 4497), and bulk density is 2.8–3.2 g/cm³ (ISO 3923-1). Carbon content is limited to ≤0.05%, moisture to ≤0.1% (ISO 4491-2), and oxygen to ≤0.2% (ISO 4491-4). Sulfur and phosphorus are each ≤0.03% (GB/T 5683). The melting point is 1500–1600°C, apparent density is 3.5–4.0 g/cm³ (ISO 3953), and flow rate is 25–35 s/50g (ISO 4490). These parameters are typical ranges; actual values must be verified with the manufacturer for specific applications. The powder is used in steelmaking to improve mechanical properties and corrosion resistance. It is particularly suited for high-strength and heat-resistant alloy steels. The product is supplied as a powder, and its performance depends on proper handling and storage to maintain low moisture and oxygen levels. For detailed specifications and suitability, consult the supplier.

Working Principle

When added to molten steel, the powder dissolves, releasing chromium and nitrogen atoms. These atoms diffuse into the metal matrix, forming solid solutions and fine precipitates that strengthen the steel. Chromium enhances hardenability and corrosion resistance, while nitrogen contributes to high-temperature strength and creep resistance. The simultaneous introduction of both elements improves efficiency compared to separate additions. The dissolution rate is influenced by particle size and temperature, with finer particles dissolving faster. The nitrogen content is controlled to avoid porosity or excessive nitride formation. The process requires proper stirring to ensure uniform distribution. The alloy's effectiveness depends on the steel composition and the desired final properties. The powder's flow characteristics and bulk density affect feeding and dosing accuracy. The melting point ensures it remains solid until it reaches the molten bath, allowing for controlled release. The low carbon, oxygen, sulfur, and phosphorus contents minimize unwanted inclusions and brittleness. Overall, the working principle is based on the metallurgical reaction between the alloy and the steel melt, leading to improved mechanical and chemical properties.

Common Materials

Ferrochromium, Nitrogen compounds, Binding agents

Technical Parameters

Parameter	Typical range	Notes & selection driver
Chromium ContentRequired	60–65 %	Minimum chromium percentage in alloyGB/T 5683
Nitrogen ContentRequired	5–8 %	Controlled nitrogen percentageGB/T 5683
Particle Size DistributionRequired	45–150 μm	D90 particle diameter for dissolution rateISO 4497
Bulk DensityRequired	2.8–3.2 g/cm³	Apparent density for handling and dosingISO 3923-1
Carbon Content	≤0.05 %	Maximum carbon impurity levelGB/T 5683
Moisture Content	≤0.1 %	Maximum moisture for storage stabilityISO 4491-2
Melting Point	1500–1600 °C	High melting point for high-temperature applications.
Apparent Density	3.5–4.0 g/cm³	Higher apparent density improves packing efficiency.ISO 3953
Flow Rate	25–35 s/50g	Critical for consistent powder feeding.ISO 4490
Oxygen Content	≤0.2 %	Low oxygen prevents oxide inclusions.ISO 4491-4
Sulfur Content	≤0.03 %	Low sulfur improves hot workability.GB/T 5683
Phosphorus Content	≤0.03 %	Low phosphorus prevents brittleness.GB/T 5683

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Ferrochromium Base Part
Primary chromium source with iron matrix

Material: Ferrochromium alloy
Nitrogen Carrier
Releases nitrogen during thermal decomposition

Material: Nitride compounds
Binding Matrix Optional Part
Maintains powder integrity and flow characteristics

Material: Inorganic binders

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Industrial-Grade Ferrochromium Nitride Alloy Powder.

Manufacturers of Industrial-Grade Ferrochromium Nitride Alloy Powder

Manufacturer profiles associated with Industrial-Grade Ferrochromium Nitride Alloy Powder.

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Frequently Asked Questions

What is the typical chromium content in this alloy powder?

The typical chromium content is 60–65% by weight, as referenced in GB/T 5683. However, the exact value should be confirmed with the supplier for the specific batch or grade.

How does the particle size affect its use in steelmaking?

Particle size distribution (D90) ranges from 45 to 150 μm. Finer particles dissolve more rapidly, while coarser particles may be used for slower release. The appropriate size depends on the steelmaking process and desired dissolution rate.

What are the maximum impurity levels for carbon and oxygen?

Carbon content is limited to ≤0.05% and oxygen to ≤0.2% (per ISO 4491-4). These low levels help prevent oxide inclusions and ensure steel quality.

Is this product certified to any standards?

The listed standards (e.g., GB/T 5683, ISO 4497) are references for testing and verification. They do not imply certification of a specific product. Always verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric to 5 bar (72.5 psi) in processing equipment; not for high-pressure reactor applications
temperature:	Up to 1200°C (2192°F) in inert/reducing atmospheres, avoid prolonged exposure above 1000°C (1832°F) in oxidizing conditions
particle size range:	10-150 microns (customizable), typical D50: 45 microns
slurry concentration:	Max 60% solids by weight in aqueous or organic carriers; optimal dispersion at 30-50% solids