4inch al2o3 monocrystal rod one of the main products of crystaland, crystaland's high-quality 4-inch led substrate material, all visible and non-destructive, colorless, through the continuous adjustment of production technology, process technology is increasingly perfect; through the authority of testing and certification and product qualityit has been comparable to the products of similar international manufacturers. |  |  |
| crystal material | high purity al2o3（ 99.996%） | |||
| specification item | target | tolerance | unit | |
| 1.surface orientation | c-plane(0001) | |||
| 2.diameter | 100.05 | ± | 0.05 | mm |
| 3.orientation flat | a-plane(11-20)±0.25 | degree | ||
| 4.flat length | 30 | ± | 1 | mm |
※the above pictures and datas are for crystaland co.,ltd .products took pictures and the measured datas, only for reference;if you need new products informations can be contacted with crystaland co.,ltd .
