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Silicon Carbide: abrasive, metallurgical and advanced grades

 

Black SiC  

Green SiC

Abrasive   Metallurgical    

 

Black SiC abrasives are suitable for grinding cast iron, non-ferrous metals, leather, rubber, plastics, wood and mineral rocks.  Refractory grains are also available to make high grade refractory products.

More information: Grit size comparison chart

Size

Chemical Composition (%)

Grit (GB/T 2480-1996) SiC F.C. Fe2O3
12#~90#
P12~P100
≥98.50 ≤0.20 ≤0.60

100#~150#
P120~P150

≥98.00 ≤0.30 ≤0.80

180#~220#
P180~P220

≥97.00 ≤0.30 ≤1.20

230#~400#
P230~P500

≥96.00 ≤0.40 ≤1.20

500#~800#
P600~P1500

≥95.00 ≤0.40 ≤1.20

1000#~1200#
P2000~P2500

≥93.00 ≤0.50 ≤1.20

 

 

Black SiC of metallurgical grades are used in steel production.

Size

Chemical Composition (%)

(mm)

SiC F.C. Fe2O3

50~0
13~0
10~0
5~0
0.5~0
100F
200F
325F

≥98.00 <1.00 <0.50
≥97.00 <1.50 <0.80
≥95.00 <2.50 <1.00
≥90.00 <3.00 <2.50
≥88.00 <3.50 <3.00
≥85.00 <5.00 <3.50

 

 

Green SiC is of higher purity and hardness than black SiC.  It can be used to grind hard alloys, metallic and non-metallic materials that are hard and brittle such as copper, brass, aluminum, magnesium, jewel, optical glass and ceramics.  Green SiC powder can also be used to make heating elements, electrical resistors and light-emitting diodes.

Size

Chemical Composition (%)

Grit (GB/T 2480-1996) SiC F.C. Fe2O3
20#~90#
P12~P100
≥99.00 ≤0.20 ≤0.20

100#~150#
P120~P150

≥98.50 ≤0.25 ≤0.50

180#~220#
P180~P220

≥97.75 ≤0.25 ≤0.70

W63~W20
P240~P1000

≥97.00 ≤0.30 ≤0.70

W14~W10
P1200

≥95.50 ≤0.40 ≤0.70

W7~W5

≥94.00 ≤0.50 ≤0.70

 

All grades also come in other sizes.