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Contact Person : Mr. Sheng Michael
Company Name : Futong Imp & Exp Inc.
Tel : 86-371-63691216
Fax : 86-371-63691212
Address : Henan,Zhengzhou,B-1708, International Business Center, No. 72, Nongye Street, Zhengzhou City, Henan Province, China
Country/Region : China
Zip : 450003

Popular in Japan and Korea--Green Silicon Carbide For Abrasives and Refractory

$Popular in Japan and Korea--Green Silicon Carbide For Abrasives and Refractory$

Product Detailed

Related Categories:Abrasives

For grinding wheels,heating elements,coated tools,refractory,polishing,electrical,lapping,ceramic Many years experiences.

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.

Chemical & 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)				2500-2900
	Moh’s				9.5
Color	Green
Color after firing	Green
Decomposition point	2300°C
Max Usable temperature	1540°C in air
Specific heat (cal/g.oC )	0°C			500°C		1000°C
	0.14			0.28		0.13
Coefficient of thermal conductivity (cal/cm2.sec.oC)	600°C			800oC		1000°C
	0.080			0.061		0.051
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 sizes	SiC	F.C	Fe2O3
20# - 90#	99.0 min	0.20 max	0.20 max
100# - 180#	98.5 min	0.25 max	0.50 max
220# - 240#	97.5 min	0.25 max	0.70 max
280# - 400#	97.0 min	0.30 max	0.70 max
500# - 600#	95.5 min	0.30 max	0.70 max
800# - 1200#	94.0 min	0.30 max	0.70 max