Silicon Carbon Alloy 40-20 – High Carbon Silicon Powder (Si 40% min, C 20% min, 0-8mm) for Injection & Sintering
Fine powder silicon carbon alloy with minimum 40% silicon and 20% carbon, sized 0-8mm for optimal reactivity. Designed for powder injection systems, sintering processes, and rapid metallurgical reactions.
| Main Composition | Si 40% min, C 20% min, S ≤0.05%, P ≤0.05%, Size 0-8mm (powder) |
| Form | Powder (0-8mm standard), finer sizes available on request |
| Application | Powder injection, sintering, briquetting, foundry coatings, rapid deoxidation |
| Standard | GB/T 2272-2020, ASTM A100, ISO 5445 (powder grade) |
Silicon Carbon Alloy 40-20 (Powder) – Product Overview
Silicon Carbon Alloy 40-20 is a fine powder grade of high carbon silicon containing minimum 40% silicon and 20% carbon, specifically sized at 0-8mm for optimal performance in injection and sintering applications. It is produced by crushing and screening high-quality silicon carbon alloy in controlled environments to ensure consistent particle size distribution. This powder grade offers rapid reaction kinetics and is ideal for processes requiring fast dissolution or intimate mixing.
Product Core Advantages
- Optimized Particle Size: 0-8mm powder ensures rapid reaction and high surface area for efficient metallurgical processes.
- High Carbon Content: 20% min carbon provides significant carburizing value alongside silicon deoxidation.
- Cost-Effective: Economical grade for bulk applications requiring fine particle size.
- Versatile Application: Suitable for powder injection, sintering, briquetting, and foundry uses.
- Consistent Quality: Strict screening and quality control ensure uniform size distribution.
- Stable Supply: Produced in modern facilities with dedicated powder processing lines.
Typical Application Areas
Silicon Carbon Alloy 40-20 powder is essential in many specialized processes:
- Powder Injection Metallurgy: Injected directly into molten metal streams for rapid deoxidation and alloying.
- Sintering Processes: Used in powder metallurgy and ceramic sintering as a reactive additive.
- Briquetting: Compressed into briquettes for convenient addition in steelmaking and foundries.
- Foundry Coatings: Incorporated into refractory coatings for mold and core applications.
- Rapid Deoxidation: Fine particles ensure quick reaction with dissolved oxygen in steel.
- Blending with Other Powders: Used in custom alloy blends for specific metallurgical requirements.
For specific application guidance or custom particle size requirements, contact our technical team for personalized recommendations.
Technical Specifications – Silicon Carbon Alloy 40-20 & Common Grades
Our Silicon Carbon Alloy 40-20 powder is produced to meet international standards with strict quality control. Below is the chemical composition of our primary grade (40-20) compared with other common industrial grades for reference.
Chemical Composition (Typical Values, % by weight)
| Grade / Designation | Si (%) | C (%) | S (%) | P (%) | Typical Application |
|---|---|---|---|---|---|
| 40-20 (0-8mm powder) | 40 min | 20 min | ≤0.05 | ≤0.05 | Powder injection, sintering |
| 60-15 | 60 min | 15 min | ≤0.05 | ≤0.05 | General steelmaking, deoxidation |
| 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 |
| 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 powder | - |
| Particle Size | 0-8mm (90% min within range) | mm |
Available Sizes
- Standard Powder: 0-8mm
- Fine Powder: 0-2mm, (available on request)
- Custom Sizes: Available upon request to meet specific process requirements
Application Guidelines – Silicon Carbon Alloy 40-20 Powder
Silicon Carbon Alloy 40-20 powder is a versatile material with the following primary applications:
Powder Injection Systems
Injected directly into molten steel via lance or wire injection systems. The fine particle size ensures rapid dissolution and high recovery rates. Typical injection rates: 0.5-5 kg per ton of steel, depending on target composition.
Sintering in Powder Metallurgy
Used as an additive in powder metallurgy blends to introduce silicon and carbon during sintering. Enhances final part properties and density.
Briquetting for Foundry Use
Compressed into briquettes with binders for convenient addition in cupolas or electric furnaces. Briquettes ensure consistent composition and reduce dust losses.
Foundry Coatings and Riser Compounds
Incorporated into exothermic and insulating coatings for risers and molds, providing localized deoxidation and improved casting quality.
Blending for Custom Alloys
Mixed with other ferroalloy powders to create custom alloy blends for specific steel or cast iron grades.
Typical Addition Methods
Can be added via injection, as part of briquettes, or mixed with other materials. Our technical team can recommend optimal practices based on your equipment and process.
Packaging & Logistics – Silicon Carbon Alloy 40-20 Powder
Packaging Options
We offer various packaging solutions to meet different customer requirements and ensure product integrity during transportation, especially important for powder products:
- 1‑ton Jumbo Bags: Common option, easy to handle with standard equipment.
- 25kg / 50kg Bags: For smaller orders or specific application requirements.
- Moisture-Proof Liners: Standard in all packaging to prevent moisture absorption.
- Custom Packaging: We can accommodate special packaging requests, including small drums or big bulk bags.
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 |
Download Center
Access our technical documentation for detailed product information:
Frequently Asked Questions – Silicon Carbon Alloy 40-20 Powder
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 advantage of using powder form compared to lumps?
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Powder form (0-8mm) offers much higher surface area, leading to faster reaction rates and more complete dissolution. It is essential for injection systems and processes requiring rapid metallurgical reactions. It also allows precise blending with other powders.
Is it possible to entrust a third-party inspection to check the quality before shipment?
+
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.
Can you supply finer powder than 0-8mm?
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Yes, we can supply finer sizes such as 0-2mm, -100 mesh, or -200 mesh upon request. Please contact our sales team with your specific particle size requirements.
How do you prevent moisture absorption during transport?
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All powder products are packaged with moisture-proof liners inside jumbo bags or small bags. For sensitive applications, we can provide vacuum-sealed packaging or additional desiccant upon request.
What is the typical particle size distribution for 0-8mm powder?
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Typically, 90% of the material falls within the 0-8mm range, with less than 5% oversize and minimal fines below 0.1mm. We can provide a sieve analysis certificate with each shipment.
Can 40-20 powder be used in wire injection systems?
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Yes, 40-20 powder can be used as core fill for cored wire. We can supply specific particle sizes optimized for wire filling and feeding. Please discuss your wire specifications with our technical team.
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
Explore our quality control process, production facilities, and customer interactions
Different Grades of HC-Silicon(Si-C Alloy) Comparison
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