Silicon Manganese Products

Silicon manganese 60/14 grade (SiMn 6014) lump appearance showing metallic luster, silver-gray color, typical irregular lump shape - Bright Alloys

Silicon Manganese 60/14

Si:60% min, Mn:14% min / low P,S | 10-60mm lump

  • Premium deoxidizer & desulfurizer for steel
  • Improves hardness and reduces oxides
  • Consistent composition, ideal for long steel
Silicon manganese 60/25 grade (SiMn 6025) lump appearance showing metallic luster, silver-gray color, typical irregular lump shape - Bright Alloys

Silicon Manganese 60/25

Si:60% min, Mn:25% min / C:1.5% max | lump

  • Higher manganese for alloy steel production
  • Enhances strength and wear resistance
  • Available in 10-80mm or customized
Silicon manganese 65/17 grade (SiMn 6517) lump appearance showing metallic luster, silver-gray color, typical irregular lump shape - Bright Alloys
Most popular

Silicon Manganese 65/17

Si 65% / Mn 17-20% / low Al, Ti

  • Excellent for foundry & special steel
  • Improves fluidity in cast iron
  • Supplied as granules or 5-50mm lumps
Silicon manganese 63/25 grade (SiMn 6325) lump appearance showing metallic luster, silver-gray color, typical irregular lump shape - Bright Alloys

Silicon Manganese 63/25

Si 63-67% / Mn 25% min, low C (0.2% max)

  • High-silicon variant for extra killing power
  • Optimized for clean steel applications
  • Controlled size: 20-70mm lump
Silicon manganese 60/28 grade (SiMn 6028) lump appearance showing metallic luster, silver-gray color, typical irregular lump shape - Bright Alloys

Silicon Manganese 60/28

Si 60% / Mn 28% base, tight P control

  • Ideal for stainless & high-Mn steel grades
  • Strong deoxidation with balanced Mn
  • Dense lumps, low slag inclusion
Silicon manganese 65/25 grade (SiMn 6525) lump appearance showing metallic luster, silver-gray color, typical irregular lump shape - Bright Alloys

Silicon Manganese 65/25

Si 65% / Mn 25% min, high purity

  • Dual performance: deoxidizer & alloy
  • Designed for HSLA and pipe line steels
  • Lumps 10-100mm, anti-breakage
Custom silicon manganese lump, grain and powder, Mn 55-65%, Si 10-25%, low P and S, silver-gray lump with metallic sheen - Bright Alloys
Custom Alloy

Custom Silicon Manganese

Bespoke ferrosilicon manganese (FeSiMn) with adjustable Si/Mn ratios, carbon content, and physical specifications for your steelmaking process

  • Customize Si/Mn ratio (Si 10-25% / Mn 55-65%) to optimize deoxidation efficiency and alloy recovery for specific steel grades
  • Tailored carbon content from low-carbon to high-carbon grades based on your refining requirements
  • Adjustable lump sizes, granules, or crushed fractions to match your furnace charging and handling systems
  • Precise control of impurities (P, S, Al, etc.) for HSLA, pipeline, and specialty steel applications
  • Formulated to maximize yield while minimizing slag formation and inclusion levels

Different Grades of Silicon Manganese Comparison

GradeMn (%)Si (%)C (%)P (%)S (%)Typical use
Silicon Manganese 60/1460.0-63.014.0-16.0≤2.5≤0.30≤0.05Carbon steel, rebar and general engineering steel
Silicon Manganese 60/2560.0-63.024.0-26.0≤0.5≤0.30≤0.05Steelmaking deoxidation, alloying and foundry
Silicon Manganese 65/1765.0-68.017.0-19.0≤1.8≤0.25≤0.04Steel deoxidation and alloying
Silicon Manganese 63/2563.0-66.024.0-26.0≤0.5≤0.25≤0.04Steelmaking deoxidation and alloying
Silicon Manganese 60/2860.0-63.027.0-29.0≤0.5≤0.30≤0.05Steelmaking deoxidation and foundry use
Silicon Manganese 65/2565.0-68.024.0-26.0≤0.5≤0.25≤0.04Specialty alloy, spring and electrical steel
Custom Silicon ManganeseOn requestOn requestOn requestOn requestOn requestTailored Mn/Si ratio and particle size
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What Is Silicon Manganese?

Silicon manganese (SiMn) is a ferroalloy of manganese, silicon and iron, with grades from SiMn 60/14 up to 65/25. It is the standard combined deoxidiser and alloying addition in steelmaking.

Bright Alloys supplies SiMn 60/14, 60/25, 60/28, 63/25, 65/17 and 65/25 in lumps and powder, with low-carbon grades for steels that cannot tolerate carbon pickup.

Applications and Performance

Steel Deoxidation

SiMn removes oxygen and adds manganese and silicon together, which is why it is charged in most carbon and low-alloy steel heats.

Rebar and Structural Steel

SiMn 60/14 and 65/17 are standard additions for reinforcing bar and structural sections produced to yield-strength specifications.

High-Silicon Grades for Special Steels

The 25-28% silicon grades suit spring, electrical and wear-resistant steels, where a higher silicon level is required with low carbon.

Why Choose Bright Alloys Silicon Manganese

Technical Support & Services

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Technical Consultation

Our metallurgical experts provide application guidance and technical support for optimal alloy selection and usage.

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Custom Formulations

We develop tailored alloy compositions to meet specific customer requirements and application needs.

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Logistics Solutions

Efficient global supply chain management ensuring timely delivery and optimal packaging for product integrity.

Can't Find What You're Looking For?

We specialize in custom alloy formulations. Contact us with your specific requirements for a tailored solution.

Request Custom Alloy

Silicon Manganese (SiMn) FAQs

What is silicon manganese (SiMn) and how is it used in steelmaking? +

Silicon manganese is a ferroalloy composed of manganese (60–65%), silicon (14–28%), and iron. It serves as a powerful deoxidizer and alloying agent in steel production. By adding SiMn 60/14, steelmakers can remove oxygen, reduce sulfur content, and improve strength and wear resistance. It is widely used in carbon steels, alloy steels, and stainless steels.

What are the standard grades of silicon manganese available? +

Bright Alloys offers a full range of SiMn grades, including 60/14, 60/25, 65/17, 63/25, 60/28, and 65/25. Each grade has a different Mn/Si ratio tailored to specific deoxidation requirements. Lumps are typically sized 10-60 mm, with low phosphorus and sulfur to meet strict steelmaking standards.

How do I choose the right SiMn grade for my steel plant? +

Grade selection depends on your target steel composition, deoxidation efficiency, and alloying goals. For general carbon steels, 60/14 SiMn is cost-effective. For higher manganese steel grades, 63/25 or 65/25 provide greater strength. Contact our technical team with your specifications for a personalized recommendation.

What is the minimum order quantity and how can I get a price? +

Contact us for today's factory price via WhatsApp (+86-18637293997) or email. We accept flexible order quantities, typically starting from one container (20–25 metric tons). We offer competitive factory direct pricing with MOQ from 20MT, include quality certificates, and ship worldwide within 7 days. Request a customized quotation and our sales team will respond within 24 hours with competitive pricing.

Does Bright Alloys provide quality certifications for SiMn? +

Yes, all our silicon manganese shipments come with a mill test certificate (MTC) showing full chemical composition and particle size distribution. Our products are ISO 9001 certified, with strict quality control from raw material selection to final delivery. Request a sample certificate or learn more about our quality assurance.

Do you ship to the USA and other countries? +

Yes, we ship to USA, Europe, Southeast Asia, Middle East and 120+ countries worldwide. We handle export documentation, customs clearance, and offer FOB, CIF, and DAP terms. Contact us for shipping rates to your port.

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