Silicon carbide briquette 70% appearance showing typical pillow-shaped briquette, dark gray color, smooth surface texture,with chemical composition specifications table below

Silicon carbide briquette 70 diameter measurement with ruler showing width dimension, typical pillow-shaped briquette, with chemical composition specifications table below

Silicon carbide briquette 70 height measurement with ruler showing thickness dimension, side view of pillow-shaped briquette, with chemical composition specifications table below

Silicon carbide briquette in bags at factory,showing products in woven bags and factory warehouse background

Silicon Carbide Alloy 70% – Premium SiC Grade (SiC≥70%) for Deoxidation & Inoculation

High-performance silicon carbide alloy with minimum 70% SiC content. Ideal for efficient steel deoxidation, iron inoculation, and high-grade refractory applications.

Main Composition	SiC ≥70.0%, C (free) ≤12%, Fe₂O₃ ≤2.5%, Al₂O₃ ≤2.0% (typical)
Form	Lumps (10-100mm), Granules (2-15mm, 1-5mm), Powder (0-2mm, 0-10mm, -100 mesh), Custom sizes
Application	Steel deoxidation, cast iron inoculation, electric furnace slag conditioning, refractory ceramics, abrasive grains
Standard	GB/T 2480-2008, ASTM C1793, ISO 9285

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Silicon Carbide Alloy 70% – Product Overview

Silicon Carbide Alloy 70% is a high-grade synthetic compound produced through controlled smelting of quartz and petroleum coke. It guarantees a minimum silicon carbide content of 70%. With lower free carbon and reduced impurities compared to SiC 65%, this grade offers enhanced efficiency for demanding metallurgical and refractory applications.

Product Core Advantages

Elevated SiC Content: Minimum 70% SiC provides stronger exothermic effect and more efficient deoxidation per kilogram added.
Lower Impurities: Tighter control on Fe₂O₃ and Al₂O₃ ensures cleaner steel and more consistent inoculation.
Balanced Chemistry: Optimal SiC-to-free carbon ratio for both deoxidation and recarburization.
Versatile Sizing: Available in lumps for furnace charging, granules for ladle addition, and powder for injection.
Cost-Effective Performance: Bridges the gap between basic 65% grade and ultra-pure grades, offering best value for many applications.

Typical Application Areas

Silicon Carbide Alloy 70% is essential in many industrial processes:

Steelmaking (EAF, AOD, LF): As a primary deoxidizer and slag conditioner to improve steel cleanliness and reduce oxygen content.
Iron Foundries: Inoculant for gray and ductile iron to promote graphite formation and improve mechanical properties.
Refractory Industry: Raw material for producing SiC-based refractory bricks, kiln furniture, and crucibles.
Abrasive Tools: Used in grinding wheels and abrasive papers due to its hardness.
Ceramic Components: For manufacturing high-temperature structural ceramics.

For specific application guidance or custom formulations, contact our technical team for personalized recommendations based on your production requirements.

Technical Specifications – Silicon Carbide Alloy 70% & Common Grades

Our SiC 70% grade is produced to meet international standards. Below is the chemical composition of our primary grade (SiC 70) compared with other common industrial grades for reference.

Chemical Composition (Typical Values, % by weight)

Grade / Designation	SiC (%)	F.C (%) (Free Carbon)	Fe₂O₃ (%)	Al₂O₃ (%)	Typical Application
SiC 70%	≥70.0	≤12.0	≤2.5	≤2.0	Steel deoxidation, iron inoculation, refractories
SiC 65%	≥65.0	≤15.0	≤3.0	≤2.5	General metallurgy, cost-sensitive
SiC 75%	≥75.0	≤10.0	≤2.0	≤1.5	Premium deoxidizer, refractory ceramics

Physical Properties

Property	Value	Unit
Melting Point (decomposes)	~2700 (with decomposition)	°C
Density (at 20°C)	3.20 - 3.25	g/cm³
Appearance	Black briquette	-
Bulk Density (briquette)	2.7 - 3.2	g/cm³

Available Sizes

Briquette 30x50mm, custom sizes available
Custom Sizes: Available upon request to meet specific process requirements

Application Guidelines – Silicon Carbide Alloy 70%

Silicon Carbide 70% is a versatile material with the following primary applications:

Steel Deoxidation

Added to electric arc furnaces, ladles, or tundishes. SiC reacts with dissolved oxygen to form SiO₂ and CO, effectively reducing oxygen content while providing exothermic heat. Typical addition rates: 1-4 kg per ton of steel, depending on initial oxygen levels.

Slag Conditioner

Helps to reduce FeO in slag, improving slag fluidity and metal recovery. Also aids in desulfurization.

Typical Addition Rates (Steel & Iron)

Addition rates vary by application: 0.5-2% for deoxidation, 0.1-0.5% for inoculation. Our technical team can assist with optimal sizing and addition practices.

Packaging & Logistics – Silicon Carbide Alloy 70%

Packaging Options

We offer various packaging solutions to meet different customer requirements and ensure product integrity during transportation:

1‑ton Jumbo Bags: Common option, easy to handle with standard equipment.
25kg / 50kg Bags: For smaller orders or specific foundry requirements.
Custom Packaging: We can accommodate special packaging requests, including moisture-proof liners or small drums.

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

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Access our technical documentation for detailed product information:

Frequently Asked Questions – Silicon Carbide Briquette 70%

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.

What is the advantage of using SiC 70% over the 65% grade? +

SiC 70% offers a higher silicon carbide content and lower impurities (Fe₂O₃, Al₂O₃). This means you can achieve the same metallurgical effect with slightly lower addition rates, and it introduces fewer oxide inclusions into the melt. It is ideal for cleaner steel grades or when tighter control over slag chemistry is needed.

Do you provide a certificate of analysis with each shipment? +

Absolutely. Every batch of Silicon Carbide Alloy 70% is tested in our ISO 17025 accredited laboratory, and a Certificate of Analysis (COA) showing SiC, F.C., Fe₂O₃, Al₂O₃, and other elements is provided with the shipping documents.

What is your production capacity for Silicon Carbide briquette? +

We have an annual production capacity exceeding 40,000 metric tons of silicon carbide across various grades, including SiC 65%, 70%, and 75%. We can accommodate both containerized and bulk vessel shipments.