Product Overview

Silicon Carbide 85% (SiC 85) is an industrial-grade silicon carbide material containing a minimum of 85% SiC. It is used as a silicon and carbon source and as a metallurgical additive in selected steelmaking and cast iron melting processes.

SiC 85 is typically supplied as black or dark-gray granules, lumps or powder. Its listed chemical specification includes SiC ≥85%, free carbon ≤4%, Fe₂O₃ ≤1.5% and moisture ≤0.5%. These indicators help determine whether the material meets your process requirements.

Available particle sizes include 0–1 mm, 1–3 mm, 0–5 mm, 3–5 mm and 5–10 mm. Customized sizing can also be discussed according to your production requirements.

Silicon Carbide 85% Technical Specifications

When purchasing metallurgical silicon carbide 85%, you should review the full chemical composition and particle-size requirements rather than selecting the material based only on its SiC percentage.

The following table shows our listed reference specifications for SiC 85.

Specification Note: These are our listed reference values. Final chemical limits, available particle sizes and inspection requirements should be confirmed for your order. If you require additional indicators such as SiO₂, please provide your purchasing specification.

What Do the Chemical Specifications Mean?

The minimum SiC content is only one part of the material specification. When you evaluate SiC 85, the following indicators are also important:

• SiC Content: Specifies the minimum proportion of silicon carbide in the supplied material.
• Free Carbon: Carbon not chemically combined within SiC. It is different from the carbon contained in the silicon carbide compound.
• Fe₂O₃: An iron oxide impurity indicator that should be checked against your application requirements.
• Moisture: Relevant to handling, storage and material charging conditions.
• Particle Size Distribution: Helps determine whether the material is suitable for your equipment and addition method.

If your production requires tighter limits or additional testing, please confirm these requirements before placing an order.

Main Applications of Silicon Carbide 85%

Metallurgical Deoxidizer for Steelmaking

Silicon Carbide 85% can be considered for selected steelmaking applications where silicon carbide is used as a deoxidizing additive and a source of silicon and carbon.

Under suitable furnace conditions, SiC participates in metallurgical reactions that can contribute to deoxidation and the adjustment of silicon and carbon inputs.

When evaluating SiC 85 for steelmaking, you should consider the steel grade, addition method, required chemical composition and expected element recovery.

Silicon carbide may partially replace other silicon-bearing additives in certain processes, but the replacement amount should be determined by your actual silicon and carbon balance. It should not be treated as a direct weight-for-weight substitute for ferrosilicon.

Foundry and Cast Iron Production

In foundry applications, SiC 85 can be used as a silicon and carbon additive during cast iron melting.

For gray iron production, silicon carbide additions may influence graphite nucleation and the resulting microstructure under suitable melting and treatment conditions.

For ductile iron production, you should evaluate the material together with the base iron composition, nodularizing treatment and inoculation practice. Silicon carbide does not replace magnesium treatment for producing spheroidal graphite.

The appropriate SiC grade and addition rate depend on your melt chemistry, impurity limits, furnace operation and expected recovery.

Selected Refractory Applications

Silicon carbide is also used in refractory and wear-resistant materials because of its hardness and high-temperature properties.

SiC 85 may be considered for selected refractory formulations when the specified SiC content, impurity limits and particle-size distribution meet the technical requirements.

However, metallurgical-grade silicon carbide and refractory-grade silicon carbide are not necessarily interchangeable. If you require SiC 85 for refractory manufacturing, please confirm the intended formulation, chemical limits and required particle-size distribution.

SiC 85 vs SiC 75 and SiC 88/90: Which Grade Should You Choose?

When comparing different metallurgical silicon carbide grades, the most important consideration is whether the material meets your required chemical specification and process conditions.

SiC 85 vs SiC 75

SiC 85 has a minimum silicon carbide content of 85%, compared with 75% for Silicon Carbide 75%.

According to our listed reference specifications, SiC 85 also has lower maximum free carbon and Fe₂O₃ limits than SiC 75.

If your process requires a higher minimum SiC content or the impurity limits listed for SiC 85, you can compare these two grades based on the same quantity, particle size and delivery terms.

SiC 85 vs SiC 88/90

Our Silicon Carbide (SiC) 88% / 90% grades have higher minimum silicon carbide contents than SiC 85.

However, a higher SiC percentage does not automatically mean every impurity limit is lower or that the material will deliver better results in all applications.

You should compare the complete chemical specifications, particle sizes, purchasing cost and expected performance under your production conditions before selecting a grade.

Selection Advice: If you are unsure whether SiC 75, SiC 85 or SiC 88/90 is suitable, send us your target composition, impurity limits, application and required quantity. We can help you review the available specifications.

Available Particle Sizes and Export Packaging

Silicon Carbide 85% Particle Sizes

We offer several particle-size options for different industrial handling and addition requirements.

• 0–1 mm
• 1–3 mm
• 0–5 mm
• 3–5 mm
• 5–10 mm
• Customized sizes upon confirmation

The appropriate size range depends on your furnace equipment, charging method and processing requirements. If you need a specific distribution or limit on fines, please include these details in your inquiry.

Export Packaging

Our listed packing options include:

• 25 kg bags for smaller handling units.
• 1 MT jumbo bags for bulk industrial orders.
• Customized packaging according to agreed handling and shipment requirements.

We can review your required packing type, quantity and destination before confirming the shipment arrangement.

Why Choose ZHENAN for Silicon Carbide 85%?

At ZHENAN, we support industrial silicon carbide purchasing with specification confirmation, particle-size options, quality documentation and export delivery arrangements.

Factory and Supply Support

We operate our own production base and work with an established supply system for metallurgical materials. Our broader operations support regular industrial orders and long-term supply cooperation.

For SiC 85, we can review your requested quantity, available stock, particle size and packaging before confirming an order.

Factory visits can also be arranged by prior appointment.

Quality Inspection and Documentation

Before ordering, you can discuss the required chemical limits and inspection items with us.

Depending on the agreed requirements, we can review arrangements for chemical analysis, certificate of analysis (COA) documentation and third-party inspection.

If you need SGS testing or other independent verification, please specify the required test items and report format so that availability and inspection arrangements can be confirmed.

Sample and Delivery Arrangements

Free samples may be available for product evaluation, with freight costs covered by the customer. Sample quantity and shipping arrangements should be confirmed before dispatch.

For applicable confirmed orders, shipment can normally be arranged within approximately 10 days after receiving advance payment, subject to material availability, required size, packing and final order terms.

We recommend confirming the delivery schedule for your specific quantity and destination before payment.

What Should You Confirm Before Ordering Silicon Carbide 85%?

To prepare a quotation for SiC 85, please provide the following purchasing details:

• Grade: Silicon Carbide 85%.
• Chemical Requirements: Minimum SiC content, free carbon and other impurity limits.
• Particle Size: Standard or customized size distribution.
• Application: Steelmaking, foundry or refractory production.
• Quantity: Required order quantity in metric tons.
• Packaging: Preferred bag type and package weight.
• Destination: Destination port or delivery location.
• Documentation: COA, SGS inspection or other requirements, if applicable.

With this information, we can review the applicable specification, available supply and quotation conditions for your order.

Frequently Asked Questions About Silicon Carbide 85%

What is Silicon Carbide 85% used for?

Silicon Carbide 85% is used in selected steelmaking and foundry processes as a metallurgical additive and a source of silicon and carbon. It may also be suitable for certain refractory formulations when the required chemical and particle-size specifications are met.

What is the difference between SiC 85 and lower-content grades?

SiC 85 has a minimum silicon carbide content of 85%, compared with 75% for SiC 75 and 70% for SiC 70. The grades may also have different impurity limits. You should compare their full specifications and expected performance under your operating conditions rather than choosing by SiC percentage alone.

What particle sizes and packing options are available?

Our listed SiC 85 sizes include 0–1 mm, 1–3 mm, 0–5 mm, 3–5 mm and 5–10 mm. Packing options include 25 kg bags and 1 MT jumbo bags. Customized sizes and packing can be discussed before ordering.

Can I request a COA or SGS inspection?

You can contact us to discuss chemical analysis documentation, COA requirements and third-party inspection. If SGS testing is required, please confirm the inspection items and report requirements so we can review the available arrangements.

Can customers visit your factory?

Yes. Factory visits can be arranged by prior appointment. Please contact us in advance to discuss scheduling and the products or production arrangements you would like to review.

Do you provide samples and bulk delivery support?

Free samples may be available, with freight paid by the customer. We also support bulk industrial orders. Shipment timing depends on stock, particle size, packaging, quantity and agreed order conditions.

Need Some Help?

When we receive your request, we will send you our personal catalog, price list, delivery terms, payment terms, and other necessary detailed information via email within 24 hours.

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