Goood Performance Green Silicon Carbide

Specifications Green Silicon Carbide

1.many years' experience

2.high quality

3.ISO9001:2000

Good  Performance Green Silicon Carbide  Green Silicon Carbide is produced in electric resistance furnace from quartz sand, petroleum coke and salt in high temperature. It's semi-transparent in green color with crystal structure, high hardness and strong cutting ability, stable chemical characteristics, good thermal conductivity. It's suited for grinding hard, brittle and non-metallic such as cemented carbides, optical glass, ceramics, etc.   Physical Properties

Crystal Form	Alpha SiC hexagonal system
Chemical Nature	Slight acid
Reaction with Acids	Very slight surface action with hydrofluoric acid
Reaction with Alkalis	Attacked at high temperature by alkalis and iron oxide
Oxidation Reduction Effects	Starts to oxide slowly at 800°C. No reduction
True Density (g/cm3)	3.20
Hardness	Knoop(kg/cm2)				2200-2500
	Moh’s				9.5
Color	Black
Color after firing	Black
Decomposition point	2200°C
Max Usable temperature	1540°C in air
Specific Heat (cal/g.°C)	0°C		500°C				1000°C
	0.14		0.28				0.13
Coefficient of thermal Conductivity	600°C		800°C				1000°C
	0.080		0.061				0.0510
Electrical resistivity(Wcm)	25°C	100°C		400°C		800°C		1400°C
	50	46.4		26.6		7.8		0.65
Coefficient of liner expansion(X10-6)	25°C-500°C	25°C-1000°C		25°C-1500°C		25°C-2000°C		25°C-2500°C
	4.63	5.12		5.48		5.77		5.94

  Chemical Composition(% by weight)

Grit	SiC(%)	F.C(%)	Fe2O3(%)
12# - 90#	98.5 min	0.20 max	0.60 max
100# - 180#	98.0 min	0.30 max	0.80 max
220# - 240#	97.0 min	0.30 max	1.20 max

           Magnetic Marterial Content(% by weight)

Grit	Magnetic Material Content
16#-30#	<0.018
36#-60#	<0.015
70#-120#	<0.012
150#-220#	<0.010

  Application

Grinding Wheels	Heating Elements
Coated Tools	Refractory
Polishing	Electrical
lapping	Ceramic

  You are welcome to contact us if you are interested or want to get more information.   Tel: 0086-371-63691217 Fax:0086-371-63691212