Silicon Manganese - SiMn60-28 - High-Silicon Deoxidizing Alloy
High‑silicon manganese alloy (27-29% Si) for efficient deoxidation, desulfurization and alloying in steel production
| Main Composition | Mn: 60-63%, Si: 27-29%, C: ≤0.5%, P: ≤0.3%, S: ≤0.05% |
| Form | Lumps (10-60mm), Powder (0-10mm), Custom sizes available |
| Application | Steelmaking deoxidation, alloying agent, foundry industry |
| Standard | GB/T 4008-2008, ASTM A99, ISO 5445 |
Silicon Manganese 60-28 Alloy Product Overview
Silicon Manganese 60-28 (SiMn60-28) is a high‑silicon ferroalloy composed primarily of manganese (60-63%), silicon (27-29%), and iron. It is widely used in steel production as a powerful deoxidizer and alloying element. The elevated silicon content provides exceptional deoxidation efficiency, helping to produce cleaner steel with fewer inclusions while also contributing to alloy strength.
Product Core Advantages
- Superior Deoxidation: High silicon level (27-29%) ensures rapid and complete oxygen removal, resulting in cleaner steel with minimal inclusions
- Excellent Desulfurization: Effectively removes sulfur impurities, improving steel quality and mechanical properties
- Alloying Efficiency: Provides both manganese and elevated silicon in a single addition, simplifying the steelmaking process
- Cost-Effective: Reduces overall alloy consumption and processing time compared to separate additions of ferrosilicon and ferromanganese
- Consistent Quality: Rigorous quality control ensures uniform composition and performance batch after batch
Typical Application Areas
Silicon Manganese 60-28 is particularly suited for demanding steel grades:
- Carbon Steel Production: As a high‑efficiency deoxidizer and to impart specific properties to the final product
- Stainless Steel Manufacturing: To control composition and improve corrosion resistance
- Alloy Steel Production: For creating steels with specific mechanical properties requiring higher silicon content
- Foundry Applications: In cast iron production to control graphite formation and improve mechanical properties
- Welding Electrode Manufacturing: As a coating component in certain types of welding electrodes
For specific application guidance or custom formulations, contact our technical team for personalized recommendations based on your production requirements.
Technical Specifications
Our Silicon Manganese 60-28 alloy is produced to meet international standards with strict quality control throughout the manufacturing process.
Chemical Composition
| Grade | Mn (%) | Si (%) | C (%) | P (%) | S (%) | Fe (%) |
|---|---|---|---|---|---|---|
| SiMn60-28 | 60.0-63.0 | 27.0-29.0 | ≤0.5 | ≤0.3 | ≤0.05 | Balance |
| SiMn65-17 | 65.0-68.0 | 17.0-19.0 | ≤1.8 | ≤0.25 | ≤0.04 | Balance |
| SiMn60-14 | 60.0-63.0 | 14.0-16.0 | ≤2.5 | ≤0.30 | ≤0.05 | Balance |
| SiMn60-25 | 60.0-63.0 | 24.0-26.0 | ≤0.5 | ≤0.3 | ≤0.05 | Balance |
| SiMn63-25 | 63.0-66.0 | 24.0-26.0 | ≤0.5 | ≤0.25 | ≤0.04 | Balance |
| SiMn65-25 | 65.0-68.0 | 24.0-26.0 | ≤0.5 | ≤0.25 | ≤0.04 | Balance |
Physical Properties
| Property | Value | Unit |
|---|---|---|
| Melting Point | 1200-1300 | °C |
| Density | 6.3-6.5 | g/cm³ |
| Appearance | Metallic gray, angular lumps | - |
| Bulk Density | 3.2-3.5 | g/cm³ |
Available Sizes
- Lumps: 10-60mm, 10-100mm, or customized sizes
- Powder: 0-3mm, 0-10mm for specific applications
- Custom Sizes: Available upon request to meet specific process requirements
Application Guidelines
Silicon Manganese 60-28 is a versatile high‑silicon alloy with multiple applications in metallurgy. Below are detailed guidelines for its use in various processes.
Steelmaking Deoxidation
In steel production, Silicon Manganese 60-28 is added during the refining stage to remove oxygen from the molten steel. The elevated silicon content provides particularly strong deoxidation, producing manganese silicate and silicon dioxide which float to the surface as slag.
Recommended addition: 2-5 kg per ton of steel, depending on the initial oxygen content and desired final composition. For high‑oxygen melts, the higher silicon content of SiMn60-28 is especially effective.
Alloying in Steel Production
As an alloying agent, Silicon Manganese 60-28 imparts specific properties to the final steel product:
- Manganese increases strength, hardness, and hardenability
- Silicon (27-29%) significantly improves strength while maintaining ductility, enhances electrical properties, and provides excellent deoxidation
Desulfurization
Silicon Manganese 60-28 aids in sulfur removal, which is crucial for producing high-quality steel with improved mechanical properties and reduced hot shortness.
Foundry Applications
In cast iron production, Silicon Manganese 60-28 is used to control the graphite structure and improve mechanical properties. The higher silicon content also helps in deoxidizing the melt and reducing porosity in castings.
Welding Electrode Production
Silicon Manganese 60-28 powder is used in the coating of certain types of welding electrodes to provide deoxidizing and alloying elements during the welding process.
Packaging & Logistics
Packaging Options
We offer various packaging solutions to meet different customer requirements and ensure product integrity during transportation:
- 1-ton Jumbo Bags: Most common option, easy to handle with standard equipment
- 25kg Bags: For smaller orders or specific application requirements
- Custom Packaging: We can accommodate special packaging requests
Logistics Information
| Parameter | Details |
|---|---|
| Minimum Order Quantity | 20 metric tons |
| Lead Time | 15-20 days after order confirmation |
| Port of Loading | Main Chinese ports (Tianjin, Shanghai, Qingdao) |
| Shipping Options | FOB, CIF, CFR (depending on destination) |
| Payment Terms | T/T, L/C at sight |
Download Center
Access our technical documentation for detailed product information:
Frequently Asked Questions
Is it possible to entrust a third-party inspection to check the quality before shipment?
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Certainly, we support third-party inspections by internationally recognized quality inspection agencies such as SGS and BV to verify product quality before shipment. The inspection covers product appearance, weighing, dimensions, and chemical composition analysis. The entire inspection process will be documented with photos and written records, which will be provided to you together with the final inspection report. This ensures you have no concerns regarding product quality.
What is the advantage of using SiMn60-28 compared to lower silicon grades?
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SiMn60-28 contains 27-29% silicon, which provides stronger deoxidation power. It is particularly effective for steels requiring higher silicon content or when you need to maximize deoxidation efficiency while adding manganese. It can reduce the need for separate ferrosilicon additions.
What is the typical consumption of Silicon Manganese 60-28 in steel production?
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The typical consumption ranges from 2-5 kg per ton of steel, depending on factors such as the initial oxygen content, desired final composition, and specific steel grade being produced. Our technical team can provide more precise recommendations based on your specific process parameters.
Can you provide custom sizes or compositions for SiMn60-28?
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Yes, we regularly produce custom sizes and compositions to meet specific customer requirements. We can adjust the chemical composition within certain limits and provide various size fractions from powder to large lumps. Contact our sales team to discuss your specific needs.
What quality certifications do you have for this grade?
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We hold ISO 9001:2015 quality management system certification and our products comply with international standards including GB/T, ASTM, and ISO. We implement strict quality control throughout the production process, from raw material selection to final product inspection.
What is your production capacity and lead time for SiMn60-28?
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We have an annual production capacity of over 50,000 metric tons of Silicon Manganese across all grades. Standard lead time is 15-20 days after order confirmation, but we can accommodate rush orders depending on production schedule and quantity. Larger orders may require slightly longer lead times.
Why Choose Our Silicon Manganese
20+ Years Experience
Specialized in ferroalloy production with deep industry knowledge
Strict Quality Control
Every batch tested to ensure consistent composition and performance
Global Delivery
Reliable logistics network ensuring timely delivery worldwide
Quality & Production Showcase
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Different Grades of Silicon Manganese Comparison
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