Silicon Calcium 60-30 – Premium Grade for Critical Steel Refining (Si≥60% / Ca≥30%)
High-purity calcium silicon alloy with minimum 60% silicon and 30% calcium. Optimized for inclusion engineering, deep desulfurization, and nodular iron production.
| Main Composition | Si ≥60.0%, Ca ≥30.0%, Fe balance, Al ≤1.5%, C ≤0.6% (typical impurities) |
| Form | Lumps (10-50mm), Granules (1-3mm, 3-15mm), Powder (0-2mm), Custom sizes, Cored wire (Ø13mm) |
| Application | Steelmaking (deoxidizer, desulfurizer, inclusion modification), nodulizer in ductile iron, calcium treatment |
| Standard | GB/T 2272-2020, ASTM A495, ISO 5445 |
Silicon Calcium 60-30 – Product Overview
Silicon Calcium 60-30 is a premium composite alloy with minimum 60% silicon and 30% calcium. Produced under strict quality control, it offers the highest silicon content in the standard SiCa range, combined with high calcium and low impurities (Al ≤1.5%, C ≤0.6%). It is the preferred choice for demanding steel grades requiring precise inclusion control and deep desulfurization.
Product Core Advantages
- High Silicon + Calcium: Si≥60% and Ca≥30% provide strong deoxidation and efficient calcium treatment.
- Ultra-Low Impurities: Al ≤1.5%, C ≤0.5% minimize unwanted side reactions.
- Versatile Forms: Available in lumps, granules, powder, and cored wire.
- Consistent Quality: Batch-to-batch consistency guaranteed by ISO 17025 testing.
- Cost-Effective: High purity allows lower addition rates.
Typical Application Areas
- Advanced Steelmaking: Inclusion modification for bearing, tire cord, and pipeline steels.
- Ductile Iron: Magnesium-free nodulizer for high-grade spheroidal graphite iron.
- Cored Wire: Precision feeding for calcium treatment in ladle furnaces.
- Specialty Alloys: Used in production of calcium-bearing master alloys.
For specific application guidance, contact our technical team for personalized recommendations.
Technical Specifications – Silicon Calcium Alloys
Our Silicon Calcium 60-30 meets international standards. Below is the chemical composition compared with common industrial grades.
Chemical Composition (Typical Values, % by weight)
| Grade / Designation | Si (%) | Ca (%) | Fe (%) | Al (%) | C (%) |
|---|---|---|---|---|---|
| SiCa 60-30 | ≥60.0 | ≥30.0 | Balance | ≤1.0 | ≤0.6 |
| SiCa 50-20 | ≥50.0 | ≥20.0 | Balance | ≤1.5 | ≤1.0 |
| SiCa 55-28 | ≥55.0 | ≥28.0 | Balance | ≤1.5 | ≤1.0 |
| SiCa 58-30 | ≥58.0 | ≥30.0 | Balance | ≤1.5 | ≤0.9 |
| SiCa 59-30 | ≥59.0 | ≥30.0 | Balance | ≤1.5 | ≤0.8 |
| SiCa 60-32 | ≥60.0 | ≥32.0 | Balance | ≤1.5 | ≤0.6 |
Physical Properties
| Property | Value | Unit |
|---|---|---|
| Melting Range | ~1200-1300 | °C |
| Density (at 20°C) | ~2.5-2.8 | g/cm³ |
| Appearance | Silvery-gray metallic lumps / granules | - |
| Bulk Density (lumps) | 1.8-2.2 | g/cm³ |
Available Sizes & Forms
- Lumps: 10-50mm(standard), 10-80mm, 30-100mm , custom sizes available
- Granules: 1-3mm, 3-15mm
- Powder: 0-2mm, 0-3mm,0.2-2mm,0-0.2mm
- Cored Wire: Ø13mm (steel sheath, SiCa powder filling), custom core weight
- Custom Sizes: Available upon request
Application Guidelines – Silicon Calcium 60-30
Steelmaking (Calcium Treatment)
Added via cored wire or ladle addition for precise inclusion modification: transforms Al₂O₃ into liquid calcium aluminates. Typical addition rates: 0.2-1.2 kg/ton steel.
Ductile Iron Nodulizer
High silicon content makes it an efficient magnesium-free nodulizer for heavy-section castings.
Desulfurization & Deoxidation
Effective for ultra-deep desulfurization (S <0.002%) in secondary metallurgy.
Foundry Inoculant
Improves graphite morphology and reduces chill depth in gray and ductile iron.
Packaging & Logistics – Silicon Calcium 60-30
Packaging Options
- 1‑ton Jumbo Bags: Standard for lumps/granules.
- 25kg / 50kg Bags: For smaller orders or foundries.
- Cored Wire Spools: 1000-1500kg spools, moisture-proof wrapped.
- Custom Packaging: Moisture-proof liners, wooden boxes, small drums.
Logistics Information
| Parameter | Details |
|---|---|
| Minimum Order Quantity | 20 metric tons (lumps/granules); 10 tons for cored wire (trial orders negotiable) |
| Lead Time | 15-25 days after order confirmation |
| Port of Loading | Main Chinese ports (Tianjin, Shanghai, Qingdao) |
| Shipping Options | FOB, CIF, CFR, DAP |
| Payment Terms | T/T, L/C at sight |
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Frequently Asked Questions – Silicon Calcium 60-30
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 makes 60-30 different from 58-30?
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Si≥60% (vs ≥58%) and lower Al (≤1.5%) make 60-30 a purer product, ideal for the most demanding steel grades where inclusion control is critical.
Is SiCa 60-30 suitable for cored wire?
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Yes, it is a premium choice for cored wire applications requiring high calcium recovery.
What sizes are best for ladle additions?
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Lumps 10-80mm are typical; granules 1-5mm for continuous feeding.
Do you provide a certificate of analysis?
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Yes, every shipment includes a COA from our accredited lab.
What is your production capacity for SiCa 60-30?
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Annual capacity for all SiCa grades exceeds 30,000 metric tons.
Why Choose Our Silicon Calcium
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
Explore our quality control process, production facilities, and customer interactions
Different Grades of CaSi Comparison
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