Tungsten Crucibles for Sapphire Crystal
Purity:W>=99.95%,Density:>=18.0g/cm3,Surface roughness: < 3.2, Working tem:1800~2750C.
Tungsten smelting crucible:
Specifications
Tungsten crucible is widely applying in high temperature vacuum furnace melting environment such as LED sapphire growing furnace
1. Physical and chemical properties
(1) Density: 18.3~19.2g /cm3
(2) Surface roughness: < 3.2
(3) Purity:W99.97%(min.)
(4) Application temperature environment:1800~2750C
2. Specifications:
1)Dimensions and tolerances Unit:mm
Delivery condition | Specification | Tolerance | Thickness | Roughness | ||
Diameter | Height | Diameter | Height | |||
Sintering | 10~500 | 10~750 | ±3.0 | ±3.0 | 8~20 |
|
Final Finished | 10~450 | 10~550 | ±0.5 | ±1.0 | 7~18 | <3.2 |
Special sizes can be manufactured based on customers' requirements
