Silicon carbide (SiC) micro powder is widely used in industries such as abrasives, electronics, and advanced ceramics. To ensure the quality and performance of this versatile material, various international standards have been established. These standards, including Japan’s JIS, China’s GB2475-83, Europe’s FEPA, and the International ISO 6344, ISO8486, provide guidelines for classifying, testing, and regulating silicon carbide micro powders across different regions and industries.
| Japan Japan JIS.R6001-1998 |
China W Standard GB2476-83 |
International Standards (P Grit) ISO6344/3 - 2001 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Particle Size | D50 Less Than | D53 Less Than | D550 More Than | D594 More Than | Particle Size | CoarsestGearse Grain | Basic Grain | Mixed Grain | Fine Grain Less Than | Particle Size | D50 Less Than | D53 Less Than | D550 More Than | D595 More Than | |
| #240 | 127 | 97 | 57±3 | 40 | W63 | 125-100 | 100-63 | 56.5±6.5 | 63-40 | 40 | 240# | 110 | 81.7 | 58.5±2.0 | 44.5 |
| #280 | 112 | 87 | 48±3 | 33 | 280# | 101 | 74 | 52.2±2.0 | 39.2 | ||||||
| #320 | 98 | 74 | 40±2.5 | 27 | 360# | 87 | 60.3 | 40.5±1.5 | 29.6 | ||||||
| #360 | 86 | 66 | 35±2 | 23 | W40 | 80-50 | 50-40 | 34.0±6.0 | 40-20 | 10 | 400# | 81 | 53.9 | 35.0±1.5 | 25.2 |
| #400 | 75 | 58 | 30±2 | 20 | 500# | 77 | 48.3 | 30.2±1.5 | 21.5 | ||||||
| #500 | 63 | 50 | 25±2 | 16 | W28 | 56-40 | 40-28 | 24.0±4.0 | 28-14 | 14 | 600# | 72 | 43 | 25.8±1.0 | 18 |
| #600 | 53 | 41 | 20±1.5 | 13 | 800# | 67 | 38.1 | 21.8±1.0 | 15.1 | ||||||
| #700 | 45 | 37 | 17±1.8 | 11 | W20 | 40-28 | 28-20 | 17.0±3.0 | 20-10 | 10 | 1000# | 63 | 33.7 | 18.3±1.0 | 12.4 |
| #800 | 38 | 31 | 14±1.08 | 9 | 1200# | 58 | 29.7 | 15.3±1.0 | 10.2 | ||||||
| #100 | 32 | 27 | 11.5±1.0 | 7 | W14 | 28-20 | 20-14 | 12.0±2.0 | 14-7 | 7 | 1500# | 58 | 25.8 | 12.6±1.0 | 8.4 |
| #120 | 27 | 23 | 9.5±0.8 | 5.5 | 2000# | 58 | 22.4 | 10.3±0.8 | 6.7 | ||||||
| #150 | 23 | 20 | 8.0±0.6 | 4.5 | W10 | 20-14 | 14-10 | 8.5±1.5 | 10-5 | 5 | 2500# | 58 | 19.3 | 8.5±0.5 | 5.4 |
| #200 | 19 | 17 | 6.7±0.6 | 4 | W7 | 14-10 | 10-7 | 6.0±1.0 | 7-3.5 | 3.5 | |||||
| #250 | 16 | 14 | 5.5±0.5 | 3 | |||||||||||
| #300 | 13 | 11 | 4.0±0.5 | W5 | 10-7 | 7-5 | 4.3±0.7 | 5-2.5 | 2.5 | ||||||
| #400 | 11 | 8 | 3.0±0.4 | 1.3 | W3.5 | 3.0±0.5 | 2.5 | 1.5 | |||||||
| #600 | 8 | 5 | 2.0±0.4 | 0.8 | W2.5 | 3.5 | 2.0±0.5 | 1.5 | |||||||
| #800 | 6 | 3.5 | 1.2±0.3 | 0.6 | W1.5 | 3.5 | 1.5±0.3 | ||||||||
| International Standards | European Standards (F Grit) | Chemical composition of black silicon carbide for bonded abrasives |
|---|---|---|
| (F Grit) ISO8486, 2=2001 | FEPA42-GB-1998 | Particle Size | SiC | Free C | Fe2O3 |
| Particle Size | DS3 | DSS4 |
| Less Than | DSS0 | More Than |
| 230# | 82 | 55.7±3.0 |
| 240# | 70 | 47.5±2.0 |
| 280# | 59 | 40.0±1.5 |
| 320# | 49 | 32.8±1.5 |
| 360# | 40 | 26.7±1.5 |
| 400# | 32 | 21.4±1.0 |
| 500# | 25 | 17.1±1.0 |
| 600# | 19 | 13.7±1.0 |
| 800# | 14 | 11.0±0.8 |
| 1000# | 10 | 9.1±0.8 |
| 1200# | 7 | 7.6±0.5 |
Tags: Black Silicon Carbide, White Fused Alumina, Brown Fused Alumina, Pink Fused Alumina, Black Fused Alumina