1.Feature:
Properties of Sic is extreme hardness, high temperature resisting, chemical erosion resisting, radiation resisting and good electric conductivity and thermal conductivity, low thermal expansion, it’s Moh’s hardness is 9-9.5.
2. Application:
It is widely used in the fields of abrasive, grinding, heat resistantance, electronics, aviation, metallurgy and ceramics and so on.
(1) Used as abrasive materials;
(2) Used as deoxidizer and high-temperature resistant material;
(3) High purity material can be used in producing semi-conductor、Sic fabrics;
3.Chemical Composition:
Table One Silicon carbide lump
|
Grade
|
Sic (%) ≥
|
Fe2O3 (%) ≤
|
F·C.（%）≤
|
MOISTURE (%) ≤
|
|
Super Grade
|
99
|
|
|
1
|
|
First Grade
|
97.5/98
|
0.6
|
0.6
|
1
|
|
Second Grade
|
88/90
|
2
|
3
|
1
|
|
Third Grade
|
70
|
4
|
5
|
1
|
Table Two Abrasive-grade Sic
Introduction: the processing method is photo electricity settlement meter.
Specification: as follows
Table two The granularity grading of abrasive-grade SiC GB/T2481.1-1998
|
Variety
|
Granularity
|
Granularity grading（％）
|
|
Goarsest grain
|
Coarse grain
|
Basic grain
|
Blending grain
|
Fine grain
|
|
Black and
Green SIC
|
F4-F7
|
0
|
≤20
|
≥40
|
≥70
|
≤3
|
|
F8-F22
|
0
|
≤20
|
≥45
|
≥70
|
≤3
|
|
F24-F36
|
0
|
≤25
|
≥45
|
≥65
|
≤3
|
|
F40-F60
|
0
|
≤30
|
≥40
|
≥65
|
≤3
|
|
F70-F80
|
0
|
≤25
|
≥40
|
≥65
|
≤3
|
|
F90-F120
|
0
|
≤20
|
≥40
|
≥65
|
≤3
|
|
F150-F220
|
0
|
≤15
|
≥40
|
≥65
|
≤3
|
Table Three Chemical index of abrasive –grade SIC GB/T2480-1996
|
Variety
|
Granularity
|
Chemical index（％）
|
|
Sic
|
F.C.
|
Fe 2O3
|
|
Black Sic
|
F12-F90
|
≥98.5
|
≤0.20
|
≤0.60
|
|
F100-F150
|
≥98.0
|
≤0.30
|
≤0.80
|
|
F180-F220
|
≥97.0
|
≤0.30
|
≤1.20
|
|
Green Sic
|
F12-F90
|
≥99.0
|
≤0.20
|
≤0.20
|
|
F100-F150
|
≥98.5
|
≤0.25
|
≤0.50
|
|
F180-F220
|
≥97.5
|
≤0.30
|
≤0.70
|
Table Four Silicon Carbide Micro powder
Chemical index for SiC micropowder
|
Variety
|
Granularity
|
Chemical index（％）
|
|
SiC
|
F.C.
|
Fe2O3
|
|
Black SiC
|
＃240 -＃1000
|
≥98.5
|
≤0.25
|
≤0.60
|
|
＃1200 -＃1500
|
≥98.0
|
≤0.25
|
≤0.60
|
|
＃1500 -＃3000
|
≥97.0
|
≤0.30
|
≤0.60
|
|
Green SiC
|
＃240 -＃1000
|
≥99.0
|
≤0.20
|
≤0.50
|
|
＃1200 -＃1500
|
≥98.5
|
≤0.20
|
≤0.50
|
|
＃2000 -＃3000
|
≥98.0
|
≤0.30
|
≤0.50
|
|
＃4000 - ＃8000
|
≥97.0
|
≤0.30
|
≤0.50
|
五.Size: 10MM, 1-10MM, 1-5MM, 0-25MM, 0-100MM; Fine Size:0-2mm, 0-1mm, 0-0.5mm, 30-90mesh, 14-80mesh, 100mesh, or at customer’s option;
六.Packing: In 25kgs bag or in 1mt plastic woven bags or as per buyers’ requirement.
|
Introduction
