Product Overview
High carbon silicon (often abbreviated as Si-C or HC silicon) is a composite alloy composed primarily of silicon (Si) and carbon (C). It's typically produced by refining silica (SiO₂) and carbon-rich materials in an electric arc furnace. Once cooled and solidified, it's crushed into lump form for easy handling and accurate dosing in metallurgical operations.
These lumps generally contain:
- Si: 60–70%
- C: 15–20%
- S & P: ≤ 0.05%
It's no accident that this blend of elements fits like a glove in so many furnace conditions - it's engineered for it.
Applications of High-Carbon Silicon Lumps
High-Carbon Silicon Lumps, also known as Silicon Carbon Alloy, are widely used in the metallurgical and foundry industries due to their excellent deoxidizing, alloying, and heat-generating properties.
In steelmaking, they serve as a powerful composite deoxidizer, effectively removing oxygen from molten steel to reduce oxide inclusions and improve steel cleanliness, while simultaneously introducing both silicon and carbon to adjust the chemical composition and enhance the hardness, strength, and wear resistance of the final steel products.
In foundry applications, High-Carbon Silicon Lumps act as an effective inoculant and graphitizer for cast iron production, promoting graphite precipitation, improving casting fluidity, reducing shrinkage defects, and significantly enhancing the machinability and mechanical properties of castings. Additionally, this alloy generates exothermic heat during oxidation, which helps to rapidly raise the bath temperature, accelerate scrap melting, shorten tap-to-tap time, and reduce overall energy consumption, making it a cost-effective and energy-saving additive for modern steelmaking processes. Beyond steel and iron production, High-Carbon Silicon Lumps are also utilized in the refractory industry for manufacturing high-temperature linings and in the chemical sector as a raw material for producing silicon-based compounds. Its versatility, combined with its ability to improve product quality while lowering production costs, makes it an indispensable material for metallurgical operations worldwide.
Specifications
Technical Data
| Grade | Si (%) | C (%) | S (%) | P (%) |
|---|---|---|---|---|
| Si68C18 | 68 | 18 | ≤0.05 | ≤0.05 |
| Si65C15 | 65 | 15 | ≤0.05 | ≤0.05 |
| Si60C12 | 60 | 12 | ≤0.05 | ≤0.05 |
| Si55C10 | 55 | 10 | ≤0.05 | ≤0.05 |
Customized compositions available upon request.
Packaging Options:
- 1MT Jumbo Bags with liner
- 25kg bags on pallets
- Customized packaging on request
Sizes Available:
- Lump: 10–100 mm
- Granule: 1–10 mm
- Powder: -200 mesh
Why Choose Our High-Carbon Silicon Lumps?
Superior Quality Control – Rigorous testing at every production stage ensures consistent chemical composition and particle size distribution
- Rich Production Experience – Years of expertise in metallurgical material manufacturing with stable supply capacity
- Competitive Pricing – Direct-from-factory pricing with no middlemen, offering the best value for your investment
- Flexible Customization – Tailored grades, sizes, and packaging to meet your specific operational needs
- Reliable Logistics – Efficient shipping and professional export documentation support for smooth international delivery
- Technical Support – Our team is ready to assist with product selection, application guidance, and after-sales service
FAQ
Q:Are you a factory or a trading company?
A: We are a direct manufacturer of SiCaAl alloy and other ferroalloys. Our facility is ISO 9001:2015 certified, and we maintain full quality control from raw material selection to final packaging. This allows us to offer competitive pricing and consistent quality control.
Q:What certifications do you hold?
A: Our certifications include:
ISO 9001:2015 (Quality Management System)
CIQ Certification (China Inspection and Quarantine)
ISO 14001 (Environmental Management – optional for some facilities)
SGS, Bureau Veritas – Qualified supplier status
Q: Can you ship CIF or CFR to my port?
A: Yes. We offer multiple incoterms:
EXW (Ex-works, our factory)
FOB (Free on Board, Tianjin/Qingdao/Shanghai port)
CFR / CIF (Insurance optional)
Door-to-door for small express shipments
Please provide your destination port and container preference for an accurate shipping quote.
Q: Do you provide third-party inspection?
A: Yes. We can arrange inspection by SGS, Bureau Veritas, Intertek, or CIQ at the buyer's expense. The inspection can be conducted at our factory or at the loading port. Our standard Certificate of Analysis accompanies every shipment and is available for review before shipping.
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