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Silicon Carbide (SiC): Blasting and Foundries

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Silicon Carbide (SiC): Blasting and Foundries Additive

Blasting Materials distributed by GritSablare are characterized by outstanding quality. This quality is reflected in an above-average service life, a very high productivity and value retention.

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Silicon Carbide: Blasting Media, Refractory & Foundry Additive

  • Black Silicon Carbide (SiC) is produced at high temperature in an electric resistance type furnace with quarts sand and petroleum coke. It stands out through a series of excellent physical characteristics, like: • high hardness • high electric and thermal conductivity • low thermal expansion • outstanding thermal shock resistance.
  • Silicon Carbide Grit is the hardest blasting media available (9.3 Mohs scale). Its grains are black hexagonal crystals with fragile and sharp properties. • High Purity with Minimal Contaminants. • The hardness of Silicon Carbide Grit allows for shorter blast times relative to softer medias.
  • Silicon Carbide, Refractory and Foundry Additive is widely used in: • refractory bricks • monolithic refractory materials • reinforcing filler • coating materials • and production of SiC-based refractory composites by combining black SiC with other materials.
Ecological Product
Silica Free
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Silicon Carbide for Blasting

  • High Purity:
    98.5% - 97.5% Purity
  • Hardness:
    9,3 Mohs (Hardest Blasting Media)
  • Reuse:
    Multiple reuses, depending on the application
  • Types:
    F12 - F220,
    P16 - P220,
    #240 - #4000
    (sieve standards: GB / FEPA / JIS / ANSI)

Silicon Carbide for Foundries

  • Purity:
    98% - 70% Purity
  • Types:
    0-1mm, 1-3mm, 3-5mm, 0-10mm, 1-10mm,
    -100Mesh, -180Mesh, -200Mesh, -325Mesh
Package
  • 3-ply paper bags of 25 kg, on shrinkfoiled pallets
  • Strong woven polypropylene big bags, with 4 lifting loops
Info
  • The material must be stored in a dry place.
Silicon Carbide Grit (SiC), Blasting

Silicon Carbide Grit (SiC) for Blasting

The Silicon Carbide (SiC) used in the blasting process is a highly effective abrasive material known for its outstanding physical and chemical properties, specifically:

  • Its chemical composition, consisting mainly of Silicon and Carbon, provide a Mohs hardness of approximately 9 - 9.5, making it one of the hardest media available for blasting processes. This exceptional hardness makes it ideal for blasting applications that involve the effective removal of difficult contaminants.
  • Silicon Carbide high temperatures resistance. This material is resistant to high temperatures, which makes it suitable in blasting processes that involve the release of heat. Reliability at high temperatures is essential in industrial applications where significant heat is released, such as removing paint or cleaning metal surfaces.
  • The high thermal conductivity of Silicon Carbide helps prevent overheating during the blasting process. This feature ensures a uniform temperature distribution on the surface of the target material and prevents the risk of deformation or damage during the blasting process.
  • Chemical resistance. Silicon Carbide is resistant to acids and bases, which makes it suitable for blasting in various environments. Its ability to resist the action of chemicals is essential in applications where surfaces are exposed to corrosive substances that must be removed by blasting.

Silicon Carbide Grit (SiC) for Blasting Advantages

Hardest Blasting Media: 9,3 Mohs Scale

High Purity with Minimal Contaminants

Very Fast Cutting Action

Lighter than Metallic with a Denser Blast Stream

Highly Durable and Reusable, on Long Term.

Contains Minimal Magnetic Content

Available in a Wide Variety of Mesh / Grit Sizes

Silica Free

Applications of Silicon Carbide Grit (SiC) for Blasting

Applications of Silicon Carbide Grit (SiC) Granite Blasting and Engraving
Granite Blasting and Engraving
The extremely high hardness (between 9 – 9.5 on the Mohs scale) recommends Silicon Carbide for blasting, cleaning, texturing and engraving granite. In addition, due to the high strength of the Silicon Carbide particles, it is possible to achieve precise details and intricate profiles on the hard surface of granite. This material also ensures an even distribution of pressure during the blasting process, minimizing the risk of damaging the granite and guaranteeing consistent, high-quality results.
Applications of Silicon Carbide Grit (SiC) Stone and Glass Engraving
Stone and Glass Engraving
Silicon Carbide is an extremely effective material in stone and glass engraving processes due to its high hardness. Thus, this material provides a precise and controlled abrasion, essential for the fine details required in the surface engraving process. During the engraving process, Silicon Carbide is directed to the desired surface using a jet of compressed air. Through the controlled impact of the abrasive particles, precise designs and textures are created on the surface of the stone or glass. This method ensures uniform and detailed engraving without compromising the integrity of the base material.
Applications of Silicon Carbide Grit (SiC) Tumbling of Complex Geometries Parts
Tumbling of Complex Geometries Parts
Silicon carbide is an ideal material for blasting and cleaning parts with complex geometries using vibratory tumblers. The high hardness of Silicon Carbide, as well as the reliability over time of the individual particles, make possible the existence of a high number of reuse cycles for this material within these operations. In vibratory tumblers, Silicon Carbide particles are introduced into a vibrating medium, such as a tub or drum, along with the parts to be cleaned. Constant vibrations ensure uniform movement of parts and abrasive particles, generating a polishing action that cleans and evens out the edges.
Applications of Silicon Carbide Grit (SiC) Deburring parts
Deburring parts
Deburring, the process of removing the excess material on the surface of machined or cast parts, particularly benefits from the use of Silicon Carbide in specialized equipment. The fine particles of Silicon Carbide act on the edges of the parts, eliminating imperfections and creating uniform edges. The grain size control of Silicon Carbide is essential to obtain accurate results, and its hardness ensures an efficient process without compromising the integrity of the machined parts. This technology provides an efficient solution for deburring and finishing parts in various industries, including the production of electronic, medical or aerospace components.

Physical Properties


Physical Properties
Shape: Angular with very sharp edges
Colour: Black
Hardness: 9.3 Mohs
Molecular Weight: 40.07
Specific Gravity: (H20 = 1) 3.21
Solubility in Water: Insoluble

Chemical Composition


Specification SiC Free Carbon (C) Fe2O3
#12 - #90 ≥ 98.50% ≤ 0.2% ≤ 0.2%
#100 - #180 ≥ 98.00% ≤ 0.3% ≤ 0.3%
#220 ≥ 97.50% ≤ 0.3 - 0.6% ≤ 0.3 - 0.6%

Chemical Index (%) and Physical Index


Grains SiC Free Carbon (C) Fe2O3 Ph Value B.D Magnetic
#240 ≥ 98.50 ≤ 0.18 ≤ 0.19 6 - 7.5 1.26 0.010
#280 ≥ 98.50 ≤ 0.18 ≤ 0.19 6 - 7.5 1.26 0.010
#320 ≥ 98.50 ≤ 0.18 ≤ 0.19 6 - 7.5 1.23 0.010
#400 ≥ 98.00 ≤ 0.18 ≤ 0.19 6 - 7.5 1.23 0.015
#500 ≥ 98.00 ≤ 0.20 ≤ 0.20 6 - 7.5 1.20 0.015
#600 ≥ 98.00 ≤ 0.20 ≤ 0.20 6 - 7.5 1.20 0.015
#800 ≥ 98.00 ≤ 0.20 ≤ 0.20 6 - 7.5 1.18 0.008
#1000 ≥ 98.00 ≤ 0.20 ≤ 0.20 6 - 7.5 1.15 0.008
#1200 ≥ 98.00 ≤ 0.20 ≤ 0.20 6 - 7.5 1.13 0.005
#1500 ≥ 98.00 ≤ 0.20 ≤ 0.20 6 - 7.5 1.12 0.005
#2000 ≥ 97.50 ≤ 0.20 ≤ 0.20 6 - 7.5 1.00 0.005

Granularity Distribution (um):


Grains D0 < D3 < D50 D94 >
#240 120.0 100.0 57.0 ± 3.0 40.0
#280 110.0 80.0 48.0 ± 3.0 33.0
#320 95.0 70.0 40.0 ± 2.5 27.0
#400 70.0 55.0 30.0 ± 2.0 20.0
#500 60.0 48.0 25.0 ± 2.0 16.0
#600 50.0 38.0 20.0 ± 1.5 13.0
#800 30.0 20.0 14.0 ± 1.0 9.0
#1000 25.0 19.0 11.5 ± 1.0 7.0
#1200 20.0 18.0 9.5 ± 1.0 5.5
#1500 19.0 17.0 8.0 ± 0.6 4.5
#2000 17.0 15.0 6.7 ± 0.6 4.0
Silicon Carbide, Refractory and Foundry Additive

Silicon Carbide (SiC), Refractory and Foundry Additive

Silicon Carbide (SiC) is an exceptional refractory material, known for the significant technical advantages it brings to the foundry industry.

  • The high thermal conductivity of Silicon Carbide allows an even distribution of the heat within the foundry, ensuring that the temperature is controlled and that the casting processes are carried out efficiently. In thermal processes, it is essential to maintain a constant temperature to ensure the quality and uniformity of the casted materials.
  • The mechanical strength of Silicon Carbide allows the material to withstand the intense physical stresses that can occur in foundries, such as material handling, the casting processes and other operations that can generate mechanical stresses. The mechanical strength contributes to the durability and longevity of the refractory material, reducing the need for frequent replacement as well as the associated costs.

Applications of Silicon Carbide Grit (SiC), Refractory and Foundry Additive

Applications of Silicon Carbide (SiC) Foundry Additive
Foundry Additive
Silicon Carbide is used as an additive in foundries to improve the metallurgical characteristics of alloys and molten metals. The addition of Silicon Carbide to metal alloys can improve the strength, hardness and thermal conductivity of the materials. This is particularly important in the non-ferrous metal industry, such as aluminium and its alloys, where Silicon Carbide contributes to the formation of superior metallurgical structures.
Applications of Silicon Carbide (SiC) Refractory Material
Refractory Material
As a refractory material, Silicon Carbide is used in the construction and repair of furnaces and other foundry equipment that require resistance to extreme temperatures. Refractory structures made of Silicon Carbide offer excellent resistance to corrosion caused by molten metals and aggressive chemicals. The reliability and durability of this refractory material helps to extend the life of equipment and reduce maintenance costs.

Chemical Properties


Specification Silicon Carbide (SiC) Free Carbon (C) Fe2O3 Free Silicon (Si) SiO2
SiC 98 ≥ 98% ≤ 0.25% ≤ 0.3% ≤ 0.8% ≤ 0.5%
SiC 97 ≥ 97% ≤ 0.3% ≤ 0.4% ≤ 0.8% ≤ 1.2%
SiC 95 ≥ 95% ≤ 1.0% ≤ 1.0% ≤ 0.8% ≤ 1.5%
SiC 90 ≥ 90% ≤ 2.5% ≤ 2.8% ≤ 0.8% ≤ 3.5%
SiC 88 ≥ 88% ≤ 2.8% ≤ 3.0% ≤ 0.8% ≤ 4.5%
SiC 70 ≥ 70% ≤ 8.0% ≤ 3.5% ≤ 1.2% ≤ 11.0%

Other Applications

Applications of Silicon Carbide (SiC) Ceramic Products
Silicon Carbide Ceramic Products
Silicon Carbide is used to produce SiC based ceramic products such as: Silicon Carbide shed plates, SiC slab decking kiln shelves, beams, burner nozzles, tubes and rollers etc.
Applications of Silicon Carbide (SiC) Semiconductor Industry
Semiconductor Industry
The use of Silicon Carbide (SiC) in the semiconductor industry represents a significant step towards the production of high-performance electronic devices. SiC-based semiconductors can withstand significantly higher temperatures than traditional silicon-based devices.
Applications of Silicon Carbide (SiC) Concrete Additive to Sparkle in Light
Concrete Additive to ‘Sparkle’ in Light
Silicon Carbide (SiC) serves as an innovative additive in the cement industry, adding an element of glow and durability. Incorporated into the cement composition, SiC improves the strength and durability of the surface, resulting in a more durable and wear-resistant final product. Its sparkling properties contribute to the aesthetic appearance of surfaces, providing a distinctive and modern finish.
Ecological Product
All tests made on the Silicon Carbide (SiC) categorised the product as non-toxic. All the analysed parameters scored below the toxicity levels imposed by the law.

User Safety

Silicon Carbide (SiC) is a safe, ecologic and stable material. It does not need special attention while handled. Wearing personal protection equipment is necessary, as well as avoiding eye contact. Storing this material does not require special conditions. All it needs is a good air ventilation in the storage space.

In case of inhalation, the affected person must be taken out, to fresh air, and kept in a comfortable position so he/she can breathe properly. If he/she has difficulties breathing, oxygen can be administered. If he/she stops breathing, CPR manoeuvres can be performed. In this case, a medical intervention is also necessary.

Avoid direct contact with the skin. If your skin entered in direct contact with this abrasive material, you must wash the affected area with clean water for 20 minutes. Use a soft soap and clean water.

In case of ingestion, a doctor’s intervention is necessary. All treatments applied to the victim must take into account the symptoms showed by that victim.

Avoid walking through the material and always wear personal protective equipment. In case of leakages, one must insulate the area on an approximately 25 meters radius in all directions. It is forbidden to spill this material in water. Please avoid dust. Use professional vacuum cleaners to clean the area.

This material comprises silicate crystals and/or quartz. According to the IARC Monographs for assessing the hazards posed by chemical substances to people, this material bears a potential risk of cancer.

Silicon Carbide? Blasting or Foundry?
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