Ultra-Pure Iron (High Purity Iron)
Professional Industrial China Ultra-Pure Iron (High Purity Iron) Manufacturer
Huaxiao Metal is a trusted supplier of ultra-pure iron (99.99% / 99.999%) for industries requiring extremely low impurity content. Whether you need 4N (99.99%) or 5N (99.999%) ultra-pure iron, we offer precision-refined materials with guaranteed purity, traceability, and technical support.
Ultra-Pure Iron Grades and Specifications
We provide ultra-pure iron in various grades and forms to meet your exact project requirements.
Available Forms & Dimensions
Ultra-pure iron, also called high-purity iron, is produced through advanced refining processes such as electrolytic purification and vacuum melting to achieve extremely low levels of carbon, sulfur, oxygen, and metallic impurities.
We provide:
4N Ultra-Pure Iron (Purity ≥ 99.99%)
5N Ultra-Pure Iron (Purity ≥ 99.999%)
Available forms:
Rods & Bars: Diameter 5mm – 200mm
Sheets & Plates: Thickness 0.5mm – 50mm
Foils & Strips: Thickness 0.05mm – 0.5mm
Ingots: Standard sizes or custom cast
Powder: Various mesh sizes available
Custom Parts: Machined to your drawings and specifications.
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Chemical Composition (wt. ppm)
| Element | Grade 4N (99.99%) | Grade 5N (99.999%) |
| Carbon (C) | ≤ 10 | ≤ 5 |
| Silicon (Si) | ≤ 15 | ≤ 5 |
| Manganese (Mn) | ≤ 10 | ≤ 1 |
| Phosphorus (P) | ≤ 5 | ≤ 1 |
| Sulfur (S) | ≤ 5 | ≤ 1 |
| Aluminum (Al) | ≤ 10 | ≤ 2 |
| Copper (Cu) | ≤ 10 | ≤ 2 |
| Iron (Fe) | Balance | Balance |
| Note: A detailed Certificate of Analysis (CoA) is supplied with every order. |
Physical & Mechanical Properties
| Property | Value |
| Density | 7.87 g/cm³ |
| Melting Point | 1538 °C (2800 °F) |
| Tensile Strength | ~180 MPa (Annealed) |
| Hardness | ~60 HV (Annealed) |
| Electrical Resistivity | ~9.71 µΩ·cm (at 20°C) |
| Magnetic Properties | High saturation magnetic induction, low coercivity |
What is Ultra-Pure Iron?
Ultra-Pure Iron, also known as High Purity Iron, is a specialized grade of iron with a purity level of 99.99% (4N) or higher. It is produced through advanced electrolytic or chemical purification processes to minimize the content of interstitial elements like carbon, oxygen, nitrogen, and sulfur. This exceptional purity gives it superior magnetic, electrical, and mechanical properties, making it an indispensable material for high-tech and mission-critical applications.
Huaxiao Metal is a trusted global supplier of ultra-pure iron, delivering exceptional quality and consistency for the world’s most demanding industries.
Ultra Pure Iron Production Process
The preparation of ultrapure iron (5N–6N, i.e., purity ≥99.995%–99.9999%) is extremely complex, as conventional smelting methods are unable to remove trace impurities (such as carbon, oxygen, nitrogen, sulfur, phosphorus, silicon, manganese, and copper). Currently, the following methods are primarily used in industry and research:
1. Zone Refining
Principle: Exploiting the differences in the distribution coefficients of different elements between solids and liquids, a small section of an iron ingot is heated until it melts, and then the molten zone is slowly moved. Impurities are “pushed” to one end, achieving gradual purification.
Advantages: It can achieve extremely high purity (6N level) and is a common method for producing ultrapure iron for research.
Disadvantages: High cost and low yield, making it suitable for small-batch production.
2. Vacuum Melting
Method: Iron is melted in a high vacuum environment to reduce the dissolution of gases (O₂, N₂, H₂) and volatilize low-boiling-point impurities (such as sulfur, phosphorus, and some carbon compounds).
Advantages: Impurities are significantly reduced, resulting in high-purity iron (approximately 4N).
Disadvantages: Further removal of trace impurities is difficult, and other methods are usually required.
3. Electrolytic Refining
Method: High-purity iron is used as the anode, dissolved in an acidic electrolyte, and then the iron is deposited at the cathode.
Advantages: Effectively removes metallic impurities such as Cu, Ni, and Co.
Disadvantages: After electrolysis, the iron still requires further refining (such as zone melting) to achieve 5N–6N.
4. Chemical Vapor Deposition (CVD)
Method: Iron is first converted into a gaseous compound (such as iron carbonyl Fe(CO)₅), which is then decomposed and deposited at high temperature to form high-purity iron.
Advantages: Extremely high-purity iron powder or thin films can be obtained.
Applications: Mostly used in scientific research, electronic device manufacturing, and thin film material preparation.
5. Integrated Process
In actual production, a combination of methods is often used:
High-purity iron (4N) is first obtained through vacuum melting and electrolytic refining.
Ultrapurity iron (5N–6N) is then upgraded through zone melting or CVD.
Key Features & Advantages of Huaxiao's Ultra-Pure Iron
Exceptional Purity Levels: We guarantee iron content up to 99.999%, minimizing impurities that can compromise performance.
Superior Electromagnetic Performance: The low coercivity and high magnetic permeability make our iron ideal for soft magnetic applications, ensuring efficient energy use and performance.
Excellent Formability: Our ultra-pure iron exhibits outstanding cold and hot workability, allowing it to be easily forged, rolled, or machined into complex shapes.
Guaranteed Quality & Consistency: Every batch undergoes rigorous quality control, including chemical analysis and physical testing, ensuring you receive a product that meets or exceeds industry standards.
Applications of Ultra-Pure Iron
The unique properties of ultra-pure iron make it essential for a wide range of advanced applications:
Precision Alloys & Superalloys: Used as a melting charge (base metal) for producing high-performance nickel-based and cobalt-based superalloys for the aerospace and energy sectors.
Electromagnetic Components: Manufacturing of high-performance electromagnets, magnetic yokes, relay parts, and magnetic shielding for scientific instruments and medical devices.
Scientific Research: Serves as a high-purity standard or reference material in metallurgical and materials science research.
Electronics & Sputtering Targets: Used in the production of sputtering targets for thin-film deposition and in components for the semiconductor industry.
Choosing the correct purity level (4N or 5N) is critical—our team can assist you in evaluating your needs.
Why Choose Huaxiao Metal as Your Ultra-Pure Iron Supplier?
Expertise & Experience: With decades of experience in the specialty metals industry, we have the technical knowledge to support your project from start to finish.
Direct manufacturer supply – competitive ultra-pure iron prices
Both 4N & 5N grades in stock
Custom shapes and sizes on request
Fast international delivery
Material certifications included
Whether you’re sourcing materials for industrial production or academic research, Huaxiao Metal is your reliable partner for high-purity metals.
Are you looking for the ultra pure iron factory?
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FAQ
What is the difference between 4N (99.99%) and 5N (99.999%) ultra-pure iron?
The primary difference is the level of impurities. 5N pure iron has ten times fewer impurities than 4N, making it suitable for the most critical applications where material integrity and performance are paramount, such as in semiconductor and advanced research fields.
4N vs. 5N Ultra-Pure Iron: Which Grade Do You Really Need?
What is your Minimum Order Quantity (MOQ)?
Our MOQ is flexible and depends on the product form and stock availability. Please contact our sales team with your requirements, and we will do our best to accommodate your needs.
How do you package the material to prevent contamination?
All ultra-pure iron products are cleaned and packed in a vacuum-sealed plastic bag within a controlled environment. This is then placed in protective containers (such as drums or wooden cases) to ensure the material arrives in pristine condition.
What information do I need to provide to get a quote?
To receive a fast and accurate quote, please provide the following: required purity grade (e.g., 4N), product form (e.g., rod, sheet), dimensions, quantity, and any specific technical requirements or standards.
Contact Shanghai Huaxiao's Ultra-Pure Iron Product Supply now
Ready to discuss your project? Contact the Huaxiao Metal team today for a competitive quote and expert technical advice.
To get started, please provide us with your requirements:
Purity Grade: (e.g., 4N or 5N)
Product Form: (e.g., Rod, Sheet, Ingot)
Dimensions & Tolerances:
Quantity:
Company & Contact Information:
