Home :: Green Silicon Carbide Technical Data

Green Silicon Carbide Technical Data

 


Application

Grade

Grit Size

Total
SiC
mass % - min.

Total
SiO2
mass % - max.

Total
Al
mass % - max

Fe (Iron)
mass % - max

C (Carbon)
mass % -max

Abrasive

AG

F24-F1500

98.0

0.4

0.08

0.3

0.3

Ceramic

SG

<5 mcm

99.5

0.4

0.05

0.05

0.3

Wire Saw Slicing

WSS

F500-F1000
JIS800-JIS2000

98.0

0.4

0.08

0.2

0.3

 

Physical Data

 

Structure :

Monocrystalline

Particle shape

Blocky, sharp edged

Color

Green

Friability:

Friable

Knoop hardness (100 scale)

2600

Mohl hardness

9.4

Melting point

2600° (4712°F)

Thermal conductivity

210 btu/hr/ft2/in/°F at 400°F

Thermal conductivity

100 btu/hr/ft2/in/°F at16400°F

Specific Gravity

3.20

 

Particle size distribution for available grits.
Grading: FEPA Standard

 

Grit size 3% max.,
larger than,
um
50% min.,
in size range,
um
94% min.,
larger than,
um
Grit size 3% max.,
larger than,
um
50% min.,
in size range,
um
94% min.,
larger than,
um
F12 2000 N/A 1400 F120 125 N/A 90
F14 1700 N/A 1180 F150 106 N/A 63
F16 1400 N/A 1000 F180 90 N/A 53
F20 1180 N/A 850 F220 75 50.0-56.0 45
F24 850 N/A 600 F240 70 42.5-46.5 28
F30 710 N/A 500 F280 59 35.0-38.0 22
F36 600 N/A 425 F320 49 27.7-30.7 16.5
F40 500 N/A 355 F360 40 21.3-24.3 12
F46 425 N/A 300 F400 32 16.3-18.3 8
F54 355 N/A 250 F500 25 11.8-13.8 5
F60 300 N/A 212 F600 19 8.3-10.3 3
F70 250 N/A 180 F800 14 5.5-7.5 2
F80 212 N/A 150 F1000 10 3.7-5.3 1
F90 180 N/A 125 F1200 7 2.5-3.5 1
F100 150 N/A 106  
Note: JIS and P Standard graded powder is available on request
 

Green Vs Black - What's the difference? 

Black SiC is a man made mineral with a high thermal conductivity rating of 100 W/m-K. It is extremely hard, around a Mohs 9.1 or 2550 Knoop. It has high strength at elevated temperatures. For example, at 1000oC, SiC is 7.5 times stronger than Al203 (aluminum oxide). Black SiC will contain some free silicon and carbon and thus is not as pure as green SiC. Black will range in purity from 97-99% pure, depending on grit size. Green SiC is made from Silica sand and coke, and is extremely pure. Hexagonally shaped, it breaks into very sharp particles. Our green SiC is 99.5% pure, exceeding JIS, ISO, & FEPA standards.

Green SiC is harder than black, coming in at a 9.4 Mohs and 2600 on the Knoop scale. Green is often the media of choice when it comes wire sawing. The micronization process of manufacturing our green SiC is controlled by a computer. Then the material is water classified/separated - this produces a very tight particle size distribution, as well as a reduction in fines, as preferred for accurate wire sawing applications. Unless your application requires an extremely pure SiC, by default, black is preferred due to its more economic pricing.