STA high purity factory price silicon nitride tube ceramic tube
USD $80 - $300 /Piece
Min.Order:50 Pieces
STA Refractory (Zhengzhou) Co., Ltd.
STA supplies thermocouple protection tubes made of ReSiC, SiSiC & NBSiC silicon nitride from its China based factories. We provide these products not only for China domestic customers, but also to worldwide.
silicon nitride (SIN) has thermal expansion coefficient gives good thermal shock resistance compared with most ceramic materials. Silicon nitride is produced in two main ways; Reaction bonded silicon nitride (RBSN), and hot pressed silicon nitride (HPSN) and sintered silicon nitride (SSN). RBSN is made by direct reacting compacted silicon powder with nitrogen, and produces a relatively low-density product compared with hot pressed and sintered silicon nitride, however the process has only a small volume change allowing net shape forming. The HPSN and SSN material is made with sintering aids and offers better physical properties suitable for more demanding applications.
technology data
ems | Gas Pressure Sintering | Reactive Sintering |
Si3N4 | ≥92% | ≥92% |
Density | ≥3.2 g/cm³ | ≥2.4 g/cm³ |
Hardness (HRA) | ≥92 | ≥85 |
Flexural Strength | ≥600 Mpa | ≥200 Mpa |
Compressive Strength | ≥1500 Mpa |
|
Thermal Conductivity | 16-22 W/mk | 14 W/mk |
Coefficient of Thermal Expansion | 3.2-3.4 10-6k | 2.8 10-6k |
Working Temperature | 1400 ℃ | 1150 ℃ |
the detail size:
OD(mm) | ID(mm) | L(mm) |
16 | 8 | 300-600 |
22 | 12 | 300-800 |
28 | 16 | 300-900 |
30 | 18 | 300-900 |
45 | 25 | 300-900 |
Advantages
High corrosion resistance, great strength in operating temperature range, long service life, high thermal conductivity, no pollution of aluminum alloy, resisting wetting by molten non-ferrous metals such as aluminum, coppor, zinc. etc
Applications
Thermocouple protection tubes Gas insert tubes Combustion tubes Reactor core tubes Hanging and support bars for high temperature firing such as pottery .
a.) The products are packed in wooden cases, and the wooden cases are tied up by 6 steel belts, then the wooden cases are put on fumigation wooden pallet.
b.) We also pack products as custom request
STA universe group is founded in 2001,dedicating to innovation ang creating a world famous brand.And provide verious products for customers.