Silicon Carbide-JUN DA

Silicon Carbide

Junda Silicon Carbide Grit is the hardest blasting media available. This high-quality product is manufactured to a blocky, angular grain shape. This media will break down continuously resulting in sharp, cutting edges. The hardness of Silicon Carbide Grit allows for shorter blast times relative to softer medias.
Due to its stable chemical properties, high thermal conductivity, low thermal expansion coefficient, and good wear resistance, silicon carbide has many other uses besides being used as abrasives. For example, silicon carbide powder is applied to the impeller or cylinder of a water turbine by a special process. The inner wall can improve its wear resistance and prolong its service life by 1 to 2 times; the high-grade refractory material made of it has heat shock resistance, small size, light weight, high strength and good energy-saving effect. Low-grade silicon carbide (containing about 85% of SiC) is an excellent deoxidizer. It can speed up the steelmaking speed, and facilitate the control of chemical composition and improve the quality of steel. In addition, silicon carbide is also widely used to make silicon carbide rods for electric heating elements.
Silicon carbide has a very high hardness, with a Mohs hardness of 9.5, second only to the world's hardest diamond (10). It has excellent thermal conductivity, is a semiconductor, and can resist oxidation at high temperatures.
Due to its stable chemical properties, high thermal conductivity, low thermal expansion coefficient, and good wear resistance, silicon carbide has many other uses besides being used as abrasives. For example, silicon carbide powder is applied to the impeller or cylinder of a water turbine by a special process. The inner wall can increase its wear resistance and prolong its service life by 1 to 2 times; the refractory material made of it has heat shock resistance, small size, light weight, high strength and good energy-saving effect. Low-grade silicon carbide (containing about 85% of SiC) is an excellent deoxidizer. It can speed up the steelmaking speed, and facilitate the control of chemical composition and improve the quality of steel. In addition, silicon carbide is also widely used to make silicon carbide rods for electric heating elements.
　

Silicon Carbide Grit Specifications
Mesh Size	Average Particle Size （the smaller the mesh number, the coarser the grit）
8Mesh	45% 8 mesh (2.3 mm) or larger
10Mesh	45% 10 mesh (2.0 mm) or larger
12Mesh	45% 12 mesh (1.7 mm) or larger
14Mesh	45% 14 mesh (1.4 mm) or larger
16Mesh	45% 16 mesh (1.2 mm) or larger
20Mesh	70% 20 mesh (0.85 mm) or larger
22Mesh	45% 20 mesh (0.85 mm) or larger
24Mesh	45% 25 mesh (0.7 mm) or larger
30Mesh	45% 30 mesh (0.56 mm) or larger
36Mesh	45% 35 mesh (0.48 mm) or larger
40Mesh	45% 40 mesh (0.42 mm) or larger
46Mesh	40% 45 mesh (0.35 mm) or larger
54Mesh	40% 50 mesh (0.33 mm) or larger
60Mesh	40% 60 mesh (0.25 mm) or larger
70Mesh	40% 70 mesh (0.21 mm) or larger
80Mesh	40% 80 mesh (0.17 mm) or larger
90Mesh	40% 100 mesh (0.15 mm) or larger
100Mesh	40% 120 mesh (0.12 mm) or larger
120Mesh	40% 140 mesh (0.10 mm) or larger
150Mesh	40% 200 mesh (0.08 mm) or larger
180Mesh	40% 230 mesh (0.06 mm) or larger
220Mesh	40% 270 mesh (0.046 mm) or larger
240Mesh	38% 325 mesh (0.037 mm) or larger
280Mesh	Median: 33.0-36.0 micron
320Mesh	Median: 26.3-29.2 micron
360Mesh	Median: 20.1-23.1 micron
400Mesh	Median: 15.5-17.5 micron
500Mesh	Median: 11.3-13.3 micron
600Mesh	Median: 8.0-10.0 micron
800Mesh	Median: 5.3-7.3 micron
1000Mesh	Median: 3.7-5.3 micron
1200Mesh	Median: 2.6-3.6 micron

Product name	Typical Physical Properties					Proximate Chemical Analysis
Silicon carbide	Color	Grain Shape	Magnetic Content	Hardness	Specific Gravity	SiC	98.58 %	Fe	0.11 %
	Black	Angular	0.2 – 0.5 %	9.5 Mohs	3.2	C	0.05 %	Al	0.02 %
						Si	0.80 %	CaO	0.03 %
						SiO2	0.30 %	MgO	0.05 %

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