Silicon Carbon Alloy 60-15 – High Carbon Silicon (Si 60% min, C 15% min) for Steelmaking & Foundry
Cost-effective silicon carbon alloy with minimum 60% silicon and 15% carbon. Widely used in steelmaking deoxidation, alloying, and foundry applications as an alternative to ferrosilicon and carburizers.
| Main Composition | Si 60% min, C 15% min, S ≤0.05%, P ≤0.05% (typical) |
| Form | Lumps (10-50mm), Granules (3-8mm), Powder (0-3mm, 0-10mm), Custom sizes available |
| Application | Steelmaking deoxidizer, alloying agent, electric furnace steelmaking, foundry casting |
| Standard | GB/T 2272-2020, ASTM A100, ISO 5445 |
Silicon Carbon Alloy 60-15 – Product Overview
Silicon Carbon Alloy 60-15 is a high-performance composite alloy containing minimum 60% silicon and 15% carbon. It is produced by carbothermic reduction of high-quality quartz and carbon materials in submerged arc furnaces. This alloy combines the deoxidizing power of silicon with the carburizing effect of carbon, making it an efficient and cost-effective addition in steelmaking and foundry processes. It serves as an excellent alternative to traditional ferrosilicon and petroleum coke combinations.
Product Core Advantages
- Dual Function: Provides both silicon for deoxidation and carbon for carburization in a single addition, improving efficiency.
- Cost-Effective: Lower production cost compared to conventional ferrosilicon, offering significant savings.
- Fast Dissolution: Optimized density and melting characteristics ensure rapid absorption in molten steel.
- Custom Sizing: Available in lumps, granules, or powder to match your specific furnace requirements.
- Stable Supply: Produced in modern furnaces with strict quality control from raw material to finished product.
Typical Application Areas
Silicon Carbon Alloy 60-15 is essential in many metallurgical processes:
- Steelmaking Deoxidation: Efficiently removes oxygen from molten steel, improving steel quality and reducing inclusions.
- Alloying Agent: Adds silicon and carbon simultaneously to achieve desired steel grades (e.g., spring steel, rail steel).
- Electric Furnace Steelmaking: Used as a charge material to adjust composition and temperature.
- Foundry Casting: Improves fluidity and mechanical properties of cast iron and steel castings.
- Substitute for Ferrosilicon: Replaces part or all of ferrosilicon addition in many applications with better economics.
For specific application guidance or custom formulations, contact our technical team for personalized recommendations based on your production requirements.
Technical Specifications – Silicon Carbon Alloy 60-15 & Common Grades
Our Silicon Carbon Alloy 60-15 is produced to meet international standards with strict quality control. Below is the chemical composition of our primary grade (60-15) compared with other common industrial grades for reference.
Chemical Composition (Typical Values, % by weight)
| Grade / Designation | Si (%) | C (%) | S (%) | P (%) | Typical Application |
|---|---|---|---|---|---|
| 60-15 | 60 min | 15 min | ≤0.05 | ≤0.05 | General steelmaking, deoxidation, alloying |
| 65-15 | 65 min | 15 min | ≤0.05 | ≤0.05 | High-grade steel, precise alloying |
| 68-18 | 68 min | 18 min | ≤0.03 | ≤0.04 | Specialty steel, high-carbon applications |
| 40-20 (0-8mm powder) | 40 min | 20 min | ≤0.05 | ≤0.05 | Powder injection, sintering |
| 50-20 (0-8mm powder) | 50 min | 20 min | ≤0.05 | ≤0.05 | Powder metallurgy, injection |
Physical Properties
| Property | Value | Unit |
|---|---|---|
| Melting Point | 1250-1350 | °C |
| Density (at 20°C) | 3.0-3.5 | g/cm³ |
| Appearance | Dark gray metallic lumps / granules / powder | - |
| Bulk Density (lumps) | 1.8-2.2 | g/cm³ |
Available Sizes
- Lumps: 10-50mm, 10-100mm, 50-100mm (standard), custom sizes available
- Granules: 3-8mm, 1-3mm
- Powder: 0-2mm, 0-10mm
- Custom Sizes: Available upon request to meet specific process requirements
Application Guidelines – Silicon Carbon Alloy 60-15
Silicon Carbon Alloy 60-15 is a versatile material with the following primary applications:
Steelmaking Deoxidation
Added to molten steel (typically 2-8 kg per ton) during tapping or ladle refining to remove dissolved oxygen. The silicon reacts with oxygen to form SiO₂, while carbon provides additional deoxidation and carburization. This dual action improves steel cleanliness and reduces alloying costs.
Alloying in Electric Arc Furnace
Used as a charge material in EAF to adjust silicon and carbon levels simultaneously. Particularly effective in producing carbon steel, spring steel, and rail steel grades.
Foundry Applications
In cast iron production, 60-15 improves fluidity, reduces shrinkage, and enhances mechanical properties. It can replace part of ferrosilicon and carburizer additions.
Substitute for Ferrosilicon
Due to its lower production cost, 60-15 is widely used as a partial or complete replacement for traditional ferrosilicon (FeSi 75) in many steelmaking applications, offering significant cost savings without compromising quality.
Typical Addition Rates (Steelmaking)
Addition rates typically range from 2 to 15 kg per ton of steel, depending on target silicon and carbon specifications. Our technical team can assist with optimal sizing and addition practices for maximum recovery.
Packaging & Logistics – Silicon Carbon Alloy 60-15
Packaging Options
We offer various packaging solutions to meet different customer requirements and ensure product integrity during transportation:
- 1‑ton Jumbo Bags: Common option, easy to handle with standard equipment.
- 25kg / 50kg Bags: For smaller orders or specific application requirements (e.g., foundries).
- Custom Packaging: We can accommodate special packaging requests, including moisture-proof liners or small drums.
Logistics Information
| Parameter | Details |
|---|---|
| Minimum Order Quantity | 20 metric tons (less for trial orders, subject to availability) |
| Lead Time | 15-20 days after order confirmation |
| Port of Loading | Main Chinese ports (Tianjin, Shanghai, Qingdao, Huangpu) |
| Shipping Options | FOB, CIF, CFR, DAP (depending on destination) |
| Payment Terms | T/T, L/C at sight, or negotiable |
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Access our technical documentation for detailed product information:
Frequently Asked Questions – Silicon Carbon Alloy 60-15
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 difference between Silicon Carbon Alloy 60-15 and traditional ferrosilicon?
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Silicon Carbon Alloy 60-15 contains significant carbon (15% min) in addition to silicon (60% min), whereas traditional ferrosilicon (e.g., FeSi 75) contains minimal carbon (<0.1%). This allows 60-15 to provide both deoxidation (via Si) and carburization (via C) in a single addition, improving efficiency and reducing overall alloying costs. It is typically more cost-effective than ferrosilicon for many steel grades.
Can Silicon Carbon Alloy 60-15 be used for all steel grades?
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60-15 is suitable for many carbon steel, low-alloy steel, and certain stainless steel grades where carbon content is acceptable. For ultra-low carbon steels, traditional low-carbon ferrosilicon is recommended. We can advise on the best product for your specific steel grade.
What sizes are best for steelmaking applications?
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For ladle additions, lumps in the range of 10-100mm are typical to ensure good recovery and avoid dust losses. For injection systems, granules (1-6mm) or powder (0-2mm) are preferred. We can supply custom sizes based on your furnace type and addition method.
Do you provide a certificate of analysis with each shipment?
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Absolutely. Every batch of Silicon Carbon Alloy 60-15 is tested in our ISO 17025 accredited laboratory, and a Certificate of Analysis (COA) showing Si, C, S, P, and other elements is provided with the shipping documents.
What is your production capacity for Silicon Carbon Alloy 60-15?
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We have an annual production capacity exceeding 80,000 metric tons of silicon carbon alloy across various grades, including 60-15, 65-15, 68-18, 40-20, and 50-20. We can accommodate both containerized and bulk vessel shipments.
Why Choose Our Silicon Carbon(High Carbon Silicon)
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 HC-Silicon(Si-C Alloy) Comparison
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