Green silicon carbide (GC)

Green silicon carbide (GC) is produced by petroleum coke, quality silicon sand and appended with salt in an electric arc furnace at high temperatures. The hardness is higher than synthetic corundum, but lower than diamond. Mechanical strength is higher than corundum. The materials are used to grind hard and brittle metal, non-ferrous metals like copper, brass, aluminum and magnesium, and non-metallic materials such as gem, optical glass, ceramics, etc.

 

Grain Usages and Types

Usage

For bonded abrasives

For coated abrasives

Type

GC

GC-P

 

 

Physical Characteristics

Item

Basic mineral

Crystal system

Crystal color

Mohs hardness

Density

Green silicon carbide

α- SiC

Hexagonal

Green

9.15

≥3.18g/cm3

Item

Micro hardness

Electrical resistivity

Grinding ability(compared
with diamond as one)

Linear expansion coefficient
(when 900℃ α•10-6k-1)

Green silicon carbide

HV3280-3400

3×105-3×107Ω•cm

0.28

4.6

 

 

Chemical Composition ( GB/T 2480-2008 )

Type

Grit

Chemical composition(%,by weight)

SiC

F.C

Fe2O3

GC

F4-F90

≥99.10

≤0.20

≤0.20

F100-F150

≥98.60

≤0.25

≤0.45

F180-F220

≥98.00

≤0.25

≤0.50

F230-F280

≥98.00

≤0.30

≤0.50

F320-F500

≥97.50

≤0.30

≤0.50

F600-F800

≥97.00

≤0.35

≤0.50

F1000-F1200

≥96.50

≤0.40

≤0.50

GC-P

P12-P100

≥99.10

≤0.20

≤0.20

P120-P150

≥98.60

≤0.25

≤0.45

P180-P220

≥98.00

≤0.25

≤0.50

P240-P360

≥98.00

≤0.30

≤0.50

P400-P1000

≥97.50

≤0.30

≤0.50

P1200-P1500

≥97.00

≤0.35

≤0.50

P2000-P2500

≥96.50

≤0.40

≤0.50

 Note: Special requirement on chemical composition can be satisfied through discussion.

 



Green Silicon Carbide (GC)