Aluminum Trace: Particle_size 10-50mm, Density 4.5-4.8 g/cm³

Component Specifications

Definition

Aluminum trace refers to the intentional residual aluminum content maintained within strict limits in high-purity ferrotitanium master alloys. This component serves as a deoxidizer and grain refiner during the alloying process, while its concentration is carefully controlled to prevent adverse effects on the final steel product's mechanical properties and corrosion resistance. In industrial applications, it typically constitutes 0.1-0.5% of the master alloy composition.

Working Principle

Aluminum acts as a strong deoxidizer that removes oxygen from molten steel during the ferrotitanium addition process. It forms aluminum oxides that float to the surface as slag, while simultaneously refining the grain structure of the steel through the formation of fine aluminum nitride precipitates. The trace amount is critical - sufficient to ensure complete deoxidation but limited to prevent excessive aluminum from remaining in solution, which could negatively impact steel ductility and weldability.

Materials

High-purity aluminum (99.7% Al minimum) in trace amounts within ferrotitanium matrix. The ferrotitanium base typically contains 65-75% Ti, 20-30% Fe, with controlled impurities including Al, Si, C, S, P all below 0.5%.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Density	4.5-4.8 g/cm³
Iron Content	20-30%
Melting Point	1400-1500°C
Particle Size	10-50mm
Aluminum Content	0.1-0.5%
Titanium Content	65-75%

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

Standards

ISO 5451, ASTM A324, DIN 17567

Parent Products

This component is used in the following industrial products

High-Purity Ferrotitanium Master Alloy

High-purity ferrotitanium master alloy is a specialized metallurgical additive produced through aluminothermic reduction or electric furnace processes.

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Engineering Analysis

Risks & Mitigation

Aluminum segregation in final product
Excessive deoxidation leading to inclusion formation
Grain growth inhibition failure
Specification non-compliance in high-grade steels

FMEA Triads

Trigger: Inconsistent raw material aluminum content
Failure: Variable deoxidation efficiency and unpredictable steel properties
Mitigation: Implement strict incoming material inspection and batch testing protocols

Trigger: Improper mixing during master alloy production
Failure: Aluminum segregation leading to localized high concentrations
Mitigation: Use controlled atmosphere melting with mechanical stirring and standardized cooling rates

Trigger: Storage contamination or oxidation
Failure: Aluminum loss through oxidation affecting concentration
Mitigation: Store in dry, inert atmosphere containers with moisture control

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05% aluminum content from specified value

Test Method

ASTM E1019 - Standard Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel and in Iron, Nickel, and Cobalt Alloys

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

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Inspection readiness

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Manufacturers of Aluminum Trace

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Frequently Asked Questions

Why is aluminum trace important in ferrotitanium master alloys?

Aluminum trace serves dual purposes: it acts as a deoxidizer to remove oxygen during steelmaking, and it helps refine grain structure through precipitation hardening, improving the mechanical properties of the final steel product.

What happens if aluminum content exceeds the specified trace limits?

Excessive aluminum can lead to reduced ductility, increased brittleness, and poor weldability in the final steel product. It may also cause nozzle clogging during continuous casting operations.

How is aluminum trace content measured and controlled?

Aluminum content is typically measured using optical emission spectroscopy (OES) or X-ray fluorescence (XRF) analysis. Control is maintained through precise raw material selection and controlled addition during the ferrotitanium production process.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Aluminum Trace