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Black silicon carbide product quality grading standards

Black silicon carbide product quality grading standards

Hope 2024-04-29 15:48:31

Category serial number project particle size range Qualified product First grade Premium product
Particle size composition 1 Basic grain F12-F90 Must comply with the provisions of the GB2481.1-1998 standard Qualified product index plus 6 Qualified product index plus 10
F100-F220 Qualified product index plus 5 Qualified product index plus 8
2 fine grain F12-F150 Qualified product index minus 1 Same product
Chemical composition 3 silicon carbide F12-F90 ≥98.50 ≥98.70 ≥99.00
F100-F180 ≥98.00 ≥98.30 ≥98.50
F220 ≥97.00 ≥97.50 ≥98.00
4 Fluorocarbon F12-F90 ≤0.20 ≤0.15 ≤0.10
F100-F220 ≤0.30 ≤0.20 ≤0.15
5 Ferric oxide F12-F90 ≤0.60 ≤0.35 ≤0.15
 F100-F180   ≤0.80 ≤0.40 ≤0.20
F220 ≤1.20 ≤0.70 ≤0.40
magnetic substance 6 Magnetize F12-F30 ≤0.03 ≤0.025 ≤0.020
F36-F60 ≤0.025 ≤0.020 ≤0.018
F70-F120 ≤0.020 ≤0.015 ≤0.010
F150-F220 ≤0.015 ≤0.010 ≤0.010
7 Ferroalloy grains F4-F220 Comply with the regulations of GB2480-83 Same quality product Same quality product
Physical properties 8 particle density Take F46 as the representative number 3.18-3.22g/ cm3 Same quality product Same quality product
9 Bulk density F4-F220 Comply with relevant regulations in GB2483-83 Same quality product Same quality product
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