Product Overview

Silicon Carbide 75% (SiC 75) is an industrial-grade silicon carbide material containing a minimum of 75% SiC. It is primarily used as a silicon and carbon additive in selected metallurgical and foundry processes. It may also be used in refractory formulations where its chemical composition and particle-size distribution meet the required specifications.

SiC 75 is available in black or dark-gray granules, lumps and powder. Its listed chemical specifications include SiC ≥75%, free carbon ≤6%, Fe₂O₃ ≤2.5% and moisture ≤0.5%. Available particle sizes include 0–1 mm, 1–3 mm, 0–5 mm, 3–5 mm and 5–10 mm.

Silicon Carbide 75% Technical Specifications

When purchasing Silicon Carbide 75%, you should review the full chemical composition, particle-size distribution and quality requirements rather than relying only on the SiC percentage.

The following table shows our listed reference specifications and the main details to confirm before ordering.

Specification Note: These are reference values for our listed SiC 75 grade. Final chemical limits, particle-size distribution and batch-specific test results should be confirmed according to the order specification and available COA.

Understanding the Chemical Composition of SiC 75

The minimum silicon carbide content is only one part of the material specification. When evaluating SiC 75, you should also consider free carbon, iron oxide, moisture and any additional impurities relevant to your production process.

Free Carbon refers to carbon that is not chemically combined within silicon carbide. It should be distinguished from the carbon contained in the SiC compound itself. Depending on your application, free carbon can affect the overall carbon balance and material selection.

Fe₂O₃ and other impurities should be reviewed against the chemical requirements of your process. Additional indicators, such as SiO₂, may need to be specified if they are important to your application.

If your purchasing specification requires tighter chemical limits or additional testing, please provide the relevant requirements before quotation.

Main Applications of Silicon Carbide 75%

Metallurgy and Steelmaking

Metallurgical silicon carbide 75% can be used as a source of silicon and carbon in selected steelmaking processes. Under suitable furnace conditions, silicon carbide may also serve as a deoxidizing additive.

The actual contribution of silicon and carbon depends on the material composition, addition method, furnace operation and expected element recovery. SiC 75 should therefore be evaluated according to the required steel chemistry rather than treated as a direct replacement for another alloy additive.

When selecting SiC 75 for metallurgical use, you should confirm its impurity limits, particle size and suitability for your charging and melting process.

Foundry and Cast Iron Production

In foundry operations, silicon carbide can be used as a silicon and carbon additive during cast iron melting.

Under suitable conditions, SiC additions may influence molten iron chemistry, graphite nucleation and the resulting cast iron microstructure. Actual results depend on the base iron composition, addition rate, furnace conditions and subsequent treatment.

For gray iron and ductile iron applications, you should also consider the foundry’s existing inoculation and, where applicable, nodularizing practices.

If your purchasing requirement is specifically related to cast iron production, you can review our Silicon Carbide 75% for Foundry Casting page for additional application information.

Selected Refractory Applications

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

SiC 75 may be considered for refractory formulations where the minimum silicon carbide content, impurity limits and particle-size distribution meet the required material specifications.

However, metallurgical-grade and refractory-grade silicon carbide are not necessarily interchangeable. If you require SiC 75 for refractory manufacturing, please specify your intended formulation and technical requirements before ordering.

SiC 75 vs SiC 70 and SiC 85: Which Grade Should You Choose?

Different silicon carbide grades can serve similar industrial applications, but their minimum SiC contents and specified impurity limits are not identical.

SiC 75 contains at least 75% silicon carbide. It may be considered when your production process accepts its specified chemical composition and particle-size requirements.

Compared with Silicon Carbide 70%, SiC 75 provides a higher minimum silicon carbide content. However, the appropriate grade should be selected according to the required chemical composition, impurity limits and total processing cost.

If your application requires a higher minimum SiC content, you can also review our Silicon Carbide 85% specifications.

For applications requiring still higher SiC content, our Silicon Carbide (SiC) 88% / 90% grades are additional options.

Selection Advice: A higher SiC percentage does not automatically mean better performance in every industrial process. You should compare the complete specifications, expected element recovery, impurity contribution and purchasing cost before choosing a grade.

Silicon Carbide 75% Particle Sizes and Packaging

Available Particle Sizes

We offer SiC 75 in several particle-size ranges for different material handling and industrial processing requirements.

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

The appropriate particle size depends on your equipment, charging method and intended application. If your production process requires a particular size distribution or limit on fines, please include these details in your inquiry.

Export Packaging

Our standard packing options include 25 kg bags and 1 MT jumbo bags. Customized export packaging can also be discussed according to your handling, loading and transportation requirements.

Before confirming an order, please specify the preferred packing method, quantity and destination so we can review the shipment arrangements.

Why Choose ZHENAN as Your Silicon Carbide 75% Supplier?

At ZHENAN, we support industrial SiC 75 purchasing with specification confirmation, quality documentation, particle-size options and export packaging arrangements.

Specification and Quality Confirmation

We can review the required SiC content, free carbon, Fe₂O₃, moisture and particle-size specifications before confirming your order.

Batch COA documentation can be provided according to the agreed supply arrangement. If you require SGS testing or another form of third-party inspection, please specify the test items and report requirements so we can confirm the inspection arrangements.

Bulk Supply and Export Support

We support regular industrial orders and long-term purchasing arrangements. Available quantity, particle size, packaging and delivery schedule should be confirmed according to your specific order.

For export shipments, we can review the required packing method, destination port and relevant shipping documents before order confirmation.

Product and Purchasing Support

If you are comparing SiC 75 with other silicon carbide grades, you can send us your required chemical composition, particle size and intended application.

We can help you review the available specifications and prepare a quotation based on your purchasing requirements.

What Should You Confirm Before Ordering Silicon Carbide 75%?

To receive a quotation that matches your actual production requirements, please provide the following information:

• Product Grade: Silicon Carbide 75%.
• Chemical Composition: Required SiC content, free carbon and other impurity limits.
• Particle Size: Standard or customized size range.
• Application: Metallurgy, foundry or refractory production.
• Order Quantity: Required quantity in metric tons.
• Packaging: Preferred packing type and package weight.
• Destination: Destination port or delivery location.
• Quality Documents: COA, SGS or other inspection requirements, if applicable.

With these details, we can review the applicable product specification, available supply and quotation conditions before confirming your order.

Frequently Asked Questions About Silicon Carbide 75%

What is Silicon Carbide 75% used for?

Silicon Carbide 75% is used as a silicon and carbon additive in selected metallurgical and foundry processes. It may also be suitable for certain refractory formulations when the required chemical composition and particle-size specifications are met.

What are the chemical specifications of SiC 75?

Our listed reference specification includes SiC content of at least 75%, free carbon of no more than 6%, Fe2O3 of no more than 2.5% and moisture of no more than 0.5%. Final values should be confirmed according to the order specification and available batch COA.

How does SiC 75 differ from SiC 70 and SiC 85?

SiC 75 contains at least 75% silicon carbide, compared with 70% for SiC 70 and 85% for SiC 85. The grades may also have different impurity limits. You should compare the complete specifications and process requirements rather than choosing by SiC percentage alone.

What particle sizes and packaging options are available?

Our listed SiC 75 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 packaging can be discussed before ordering.

Can you provide a batch COA or third-party inspection?

Batch COA documentation can be provided according to the agreed supply arrangement. If SGS or other third-party inspection is required, please specify the test items and report requirements so we can confirm the available arrangements.

What information should I provide to request a quotation?

Please send your required SiC content, free carbon and other impurity limits, particle size, order quantity, packaging method and destination port. Additional quality or inspection requirements should also be included in your inquiry.

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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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