Pure Iron Flakes – Precision-Grade Material for Advanced Applications - Blog

At Beilun Metal, we engineer Pure Iron Flakes to meet the rigorous demands of industries requiring high-purity, soft magnetic materials. With Fe ≥99.9% purity and exceptional uniformity, our flakes are ideal for applications ranging from electromagnetic shielding to additive manufacturing. Explore the technical specifications, applications, and competitive advantages that define our product.

1. Key Features of Beilun Metal's Pure Iron Flakes

Property	Beilun Metal	Industry Standard	Benefit
Purity (Fe)	99.9% – 99.95%	99.6% – 99.8%	Minimizes eddy current losses
Particle Size	0.1 – 5.0 mm (±0.02 mm)	0.1 – 5.0 mm (±0.1 mm)	Ensures uniformity in compaction
Coercivity (Hc)	60 – 80 A/m	90 – 120 A/m	Reduces energy loss in cyclic use
Apparent Density	2.5 – 3.0 g/cm³	2.2 – 2.8 g/cm³	Optimizes powder metallurgy yields
Surface Oxidation	<0.1%	0.3% – 0.5%	Enhances sintering performance

2. Chemical Composition (Typical Analysis)

Element	Content (wt%)	Permissible Limit	Role in Performance
Iron (Fe)	99.93%	≥99.9%	Ensures magnetic consistency
Carbon (C)	0.003%	≤0.005%	Prevents brittleness
Sulfur (S)	0.001%	≤0.003%	Eliminates hot-shortness defects
Phosphorus (P)	0.002%	≤0.004%	Improves compressibility
Oxygen (O)	<50 ppm	<100 ppm	Reduces oxide inclusions
Nitrogen (N)	<20 ppm	<50 ppm	Maintains ductility
Others	<0.05%	<0.1%	Guarantees batch-to-batch consistency

3. Technical Specifications

Parameter	Beilun Metal	Test Method
Flow Rate	25 – 30 s/50g	ISO 4490
Hall Flowmeter	28 s/50g	ASTM B213
Tap Density	3.2 – 3.5 g/cm³	ISO 3953
Melting Point	1,538°C	ASTM E29
Magnetic Permeability (µ)	5,000 – 6,000 µH/m	IEC 60404-4

4. Applications of Pure Iron Flakes

Industry	Use Case	Performance Benefit	Recommended Size
Electronics	EMI shielding coatings	99.9% attenuation up to 10 GHz	0.1 – 0.5 mm
Additive Manufacturing	3D printed cores	High packing density, minimal porosity	15 – 45 µm (atomized)
Automotive	Sintered bushings	30% lower wear vs. bronze	1.0 – 3.0 mm
Renewable Energy	Soft magnetic composites	Core loss <2.5 W/kg at 1.5 T	0.5 – 2.0 mm
Chemicals	Catalyst substrates	High surface area for reactivity	0.2 – 1.0 mm

5. Manufacturing Process

Our flakes are produced through a meticulously controlled process:

Step 1: Vacuum Induction Melting (VIM)

- Input: Fe-99.95% pure iron ingots.

- Process: Melt under 10⁻³ Pa vacuum to eliminate gaseous impurities.

Step 2: Atomization & Flaking

Method	Technology	Output Characteristics
Gas Atomization	Nitrogen or argon	Spherical powders (for AM)
Mechanical Milling	High-energy ball mills	Irregular flakes (for sintering)

Step 3: Surface Passivation

- Coating: Silane or phosphate layers to prevent oxidation.

- Result: Shelf life extended to 12+ months.

6. Quality Assurance & Certifications

-Testing Protocols:

-Laser Diffraction: Particle size analysis (ISO 13320).

- SEM/EDS: Contamination detection at ppm levels.

- BH Curve Analysis: Magnetic property validation.

- Certifications: ISO 9001, ISO 14001, REACH, RoHS.

7. Sustainability Commitment

Initiative	Impact
Recycled Feedstock	98% of scrap reintegrated into production
Carbon Footprint	1.1 tons CO₂/ton (vs. 2.5 tons industry avg)
Water Usage	Closed-loop systems save 4,000 m³/year

Custom Services:

- Tailored particle size distributions.

- Surface coatings (Zn, Ni, SiO₂).

Why Choose Beilun Metal?

1. Ultra-High Purity: Fe-99.95% ensures minimal impurities for critical applications.

2. Global Logistics: DDP terms to major hubs (EU, North America, Asia).

3. R&D Partnership: Collaborate on custom alloys and coatings.

Beilun Metal's Pure Iron Flakes set the benchmark for precision, performance, and sustainability. Whether you're developing cutting-edge electronics or high-efficiency energy systems, our materials deliver unmatched reliability.

Beilun Metal has been a global leader in high-purity iron solutions, serving industries that demand precision and innovation. Our advanced metallurgy processes ensure materials that outperform and outlast.