High Purity Black Silicon Carbide Powder for Abrasive & Refractory

Min.Order: 1

Product origin: Shanghai, China

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US$ 300 ~ 800

Description

High Purity Black Silicon Carbide Powder for Abrasive & Refractory

Grade	Chemical Compositions(%)
	SiC	FC	Fe2O3	Moisture
	Min	Max
SiC90	90.0	3.0	1.2	0.5
SiC88	88.0	4.0	1.5
SiC85	85.0	4.5	1.8
SiC80	80.0	5.0	3.0
SiC70	70.0	8.0	4.0

Silicon Carbide added to the furnace turn into the Si and C for casting iron, One is to improve the carbon content, and the second is to strengthen the reducibility of iron liquid. Greatly reduce the adverse effect of corrosion the furnace. Prevent carbide separate out, Increasing the amount ferrite, The cast iron compact structure, Significantly improve the processing performance and cutting face is bright and clean. Increase the nodular case iron graphite ball number per unit area. Improve spheroidizing rate. For reducing nonmetallic inclusion and slag, eliminate shrinkage, eliminate subcutaneous blowhole also has a good effcet.
Standard
Size: 0-1mm; 0-3mm; 0-10mm; 1-10mm; etc
Packing: in 25kg bag or in 1mt big bag. Etc

Black Silicon Carbide (Standard : GB/T2480-2008)
Usage		Black Sic For vitrified wheels/sanding belt	Black Sic For bonded abrasive	Black Sic For flap discs by hand
Type& Grade		C	C-B	C-P
NO	Grit No	Chemical composition (%)
NO	Grit No	SiC (≥)	F.C. (≤)	Fe2O3(≤)
C	F4-F90 P12-P100	98.50	0.2	0.4
	F100-F150 P120-P150	98.10	0.25	0.5
	F180-F220 P180-P220	97.20	0.3	0.55
	F230-F280 P240-P360	97.20	0.3	0.55
	F320-F500 P400-P1000	97.00	0.35	0.6
	F600-F800 P1200-P1500	96.50	0.4	0.6
	F1000-F1200 P2000-P2500	95.50	0.5	0.7
C-B&C-P	F4-F90 P12-P100	98.10	0.25	0.5
	F100-F150 P120-P150	97.60	0.3	0.6
	F180-F220 P180-P220	96.70	0.35	0.65
	F230-F280 P240-P360	96.70	0.35	0.65
	F320-F500 P400-P1000	96.50	0.4	0.7
	F600-F800 P1200-P1500	96.00	0.45	0.7
	F1000-F1200 P2000-P2500	95.00	0.55	0.8

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

FAQ
Q1: Is your company SID a manufacturer or trader?
A1: Manufacturer, with our own trading department.
Q2: What's the MOQ?
A2. No limitation.
Q3: Can we visit your factory?
A3: Of course ,welcome at any time,seeing is believing
Q4: What's your payment terms?
A4: Negotiation
Q5: Is your company accept customization?
A5: Professional technology teams and engineers all can meet with you.
Q6: How do you guarantee quality?
A6: For every production processing,we have complete QC system for the chemical composition and Physical properties.After production,all the goods will be tested ,and the quality certificate will be shipped along with goods.
Q7: What's the proportion of abroad business?
A7: Abroad market around 50%; Domestic market around 50%; and now export proportion is increasing.
Q8: Your company would provide samples?
A8: Yes, we could supply samples for free, and the freight will be undertaken by clients.

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