Calcium Silicon 5528
Size:lumps, granules, powder
Origin: Shaanxi Province, China
HS code: 72029999
introduction
Calcium Silicon 5528 is an alloy mainly composed of silicon and calcium, used as an efficient deoxidizer and desulfurizer in steelmaking. It improves steel purity, enhances mechanical properties, and supports the production of high-quality and special steels.
Products composition
|
Grade |
Ca% (min) |
Si% (min) |
C% (max) |
Al% (max) |
P% (max) |
S% (max) |
|
5528 |
28 |
55 |
1.0 |
2.4 |
0.04 |
0.06 |
|
Size and other grades can be customized! |
||||||
|
Grade |
Ca% (min) |
Si% (max) |
C% (max) |
Al% (max) |
P% (max) |
S% (max) |
|
Ca31Si60 |
31 |
55-65 |
1.0 |
2.4 |
0.04 |
0.06 |
|
Ca28Si60 |
28 |
55-65 |
1.0 |
2.4 |
0.04 |
0.06 |
|
Ca24Si60 |
24 |
55-65 |
1.0 |
2.5 |
0.04 |
0.04 |
|
Ca20Si55 |
20 |
50-60 |
1.0 |
2.5 |
0.04 |
0.04 |
|
Ca16Si55 |
16 |
50-60 |
1.0 |
2.5 |
0.04 |
0.04 |
|
Size and other grades can be customized! |
||||||
features
Stable Si-Ca Ratio
Balanced composition (~55% Si, ~28% Ca) ensures consistent metallurgical performance across different steelmaking processes.
Low Impurity Control
Strict limits on C, Al, P, and S help reduce secondary contamination and improve final steel cleanliness.
Efficient Reaction Behavior
Good reactivity and favorable density enable rapid dissolution in molten steel and effective removal of inclusions.
Flexible Size Options
Available in lumps, granules, and powder to match various feeding systems (manual, mechanical, or cored wire).
Process Compatibility
Suitable for BOF, EAF, and ladle refining operations, supporting stable and repeatable production conditions.
Customizable Specifications
Particle size, chemical composition ranges, and packaging can be tailored for different plant standards and logistics needs.
applications
- Deoxidizer and desulfurizer in steelmaking (especially low-carbon and stainless steels)
- Inclusion modifier to improve steel cleanliness
- Inoculant/additive in cast iron and ductile iron production
- Auxiliary material in converter steelmaking processes
why choose us
Production Capability
- Equipped with modern submerged arc furnace (SAF) systems, medium-frequency induction furnaces, and automated alloy smelting lines
- Integrated raw material pre-treatment system, including crushing, screening, and precise batching to ensure stable furnace input
- Advanced temperature control and real-time monitoring system during smelting process to improve consistency and energy efficiency
- Strong output capacity designed to support long-term bulk wholesale and contract supply
Quality Assurance
- Strict incoming raw material inspection system
- In-house chemical laboratory testing center, equipped with spectrometer (OES), carbon-sulfur analyzer, and moisture detection equipment
- Each batch undergoes pre-shipment composition verification and sampling inspection
- Compliance with international industrial standards such as ISO quality management system (ISO 9001)
- Support for third-party inspection services (SGS, BV, CIQ or customer-designated inspection agencies)
- Batch traceability system ensuring full production record tracking from furnace to shipment
OEM & Custom Supply
- Custom production based on customer-required chemical composition and specification standards
- Flexible packaging solutions: 1MT / 25kg / 50kg woven bags, jumbo bags (FIBC), steel drums or container bulk loading
- Private label service (branding, marking, labeling)
Global Supply & Logistics
- Export-oriented supply chain system with experience serving Europe, Middle East, Southeast Asia, South America and Africa markets
- Cooperation with major international ports and freight forwarders for stable shipment arrangements
- Flexible shipping solutions: FCL (Full Container Load) and bulk vessel shipment (break bulk / dry bulk)
- Professional loading supervision to ensure accurate weight, safe packing, and moisture protection
- Timely coordination of customs clearance documents to reduce shipping delays
Customer Support & Service
- Dedicated sales and technical team with fast response
- Pre-sales technical support for grade selection, application guidance, and cost optimization suggestions
- Order tracking system with regular production and shipping updates
- After-sales support covering: Quality claim handling, technical feedback response, long-term cooperation improvement suggestions
FAQ
Q1: What does "5528" mean in Calcium Silicon 5528?
A: It typically indicates approximate chemical composition-about 55% silicon and 28% calcium. This balance ensures stable deoxidation performance and cost-efficiency for bulk steel production.
Q2: How does Calcium Silicon compare to aluminum deoxidizers?
A: Calcium Silicon can partially replace aluminum for final deoxidation, offering cleaner steel, better inclusion control, and improved fluidity and toughness.
Q3: What forms and sizes are typically available?
A: Common forms include lumps, granules, and powder, with sizes such as 0–3 mm, 3–8 mm, and 10–100 mm, customizable based on furnace or feeding requirements.
Q4: Can specifications be customized for bulk orders?
A: Yes. Chemical composition (Si/Ca ratio), particle size, and packaging (e.g., ton bags or drums) can be tailored to meet different steelmaking processes and regional standards.
welcome to your inquiry and contact!
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