Silicon Calcium Alloy (Si-Ca)
Silicon Calcium Alloy (Si-Ca) - Premium Deoxidizer & Desulfurizer for Steelmaking
Product Overview
Silicon Calcium Alloy (CaSi) is a composite deoxidizer and desulfurizer produced by smelting silicon, calcium, and iron feedstocks in a submerged arc furnace at our facility in Anyang, Henan, China. It is widely used in modern steelmaking for inclusion modification, deoxidation, and desulfurization, helping to produce clean steel with superior mechanical properties. With over 15 years of production experience, we supply CaSi alloy to steel mills across Asia, Europe, and the Americas.
Chemical Composition
| Grade | Si (%) | Ca (%) | Fe (%) | C (%, max) | Size |
|---|---|---|---|---|---|
| CaSi-1 | 55 min | 30 min | Balance | 1.0 | 10-100mm |
| CaSi-2 | 50 min | 25 min | Balance | 1.0 | 10-100mm |
| Si60Ca30 | 60 min | 30 min | Balance | 0.5 | 0-3mm, 10-50mm |
*Custom specifications available upon request. All batches accompanied by Mill Test Certificate.
Key Features & Advantages
| ✓ | Dual Deoxidation & Desulfurization - Calcium and silicon work together to remove oxygen and sulfur from molten steel, producing cleaner metal with fewer inclusions. |
| ✓ | Inclusion Modification - Calcium modifies the shape of non-metallic inclusions (Al₂O₃ → calcium aluminates), preventing nozzle clogging and improving steel castability. |
| ✓ | Grain Refinement - Refines the grain structure of steel, enhancing toughness, ductility, and impact resistance. |
| ✓ | Cost-Effective Alternative - Replaces conventional deoxidizers with better overall efficiency, reducing total additive cost by 10-20%. |
| ✓ | Customizable Sizing - Available in lumps (10-100mm), granules (0-3mm), and custom sizes to match your feeding system. |
Main Applications
| Steelmaking | Used in EAF, BOF, and LF refining as deoxidizer and desulfurizer for carbon steel, alloy steel, and stainless steel production. |
| Pipeline Steels | Critical for inclusion shape control in API-grade line pipe and heavy plate grades requiring high toughness. |
| Casting | Used as inoculant in gray iron and ductile iron production to improve graphite structure and mechanical properties. |
| Special Alloys | Essential additive for manufacturing spring steel, bearing steel, and other high-grade special alloys. |
Packaging & Delivery
| Packaging: | 1 MT jumbo bags with plastic lining, or 25 kg small bags as required |
| MOQ: | 20 tons (one 20ft container) |
| Lead Time: | 7-10 days after order confirmation |
| Inspection: | Spectrometric analysis per batch; SGS/BV third-party inspection available |
| Trade Terms: | FOB, CIF, CFR; Payment: T/T or L/C |
Quality Assurance
Every production batch is tested by our QC laboratory using spectrometric analysis to ensure consistent chemical composition. Mill Test Certificates are provided with each shipment. We are ISO 9001 certified and welcome third-party inspections by SGS, BV, or other accredited agencies.
FAQ
Q: Can I get free samples?
A: Yes, we provide 5kg free samples for quality evaluation. Freight is at your cost.
Q: What is your monthly production capacity?
A: Our monthly output is approximately 2,000 MT for silicon calcium alloy.
Q: Can you customize the size?
A: Yes, we can produce to your specified size range. Please advise your requirements.
Q: How long have you been in this business?
A: We have been manufacturing ferroalloys in Anyang, Henan for over 15 years, serving customers worldwide.
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