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Sialon Westofen Dosing Tubes for Striko Westomat Furnaces – Superior Lifespan vs Aluminium Titanate, 2–3 Years Service, 12-Month Warranty.
Sialon Westofen Dosing Tubes are premium silicon nitride-based ceramic tubes specially manufactured for Striko Westofen and Westomat dosing furnaces in the molten non-ferrous industry (primarily aluminium at 660.3 °C melting point). They provide dramatically longer service life than standard Aluminium Titanate (AlTi) tubes, virtually eliminating clogging and reducing manufacturing downtime to a minimum.
Developed specifically to solve the short lifespan and frequent clogging problems of AlTi tubes in clean, closed Westomat systems, these low-thermal-conductivity Sialon tubes allow easy setup, operation and integration into any die casting or gravity casting line. The Westomat removes metal below the bath surface, preventing contamination – Sialon dosing tubes enhance this clean process with non-wetting surfaces, zero water absorption and outstanding corrosion/erosion resistance. Customers routinely report 2–3 years continuous service with minimal cleaning. Compatible with Sialon Immersion Heaters for furnace heating, ultrasonic degassing and hydrogen measurement devices.
Sialon’s unique composition (partial substitution of silicon by aluminium and nitrogen by oxygen) delivers superior properties over pure Si₃N₄: high strength, thermal shock resistance and durability in aggressive molten aluminium environments. Full technical specifications (ULTRA™ grades):
- 부피 밀도: 3.1–3.3 g/cm³
- 수분 흡수율: 0 %
- 굽힘 강도: 580–1,020 MPa
- 비커스 경도: 12.7–15.0 GPa
- 파괴 인성: 4–7 MPa·m¹/²
- 영률: 270–300 GPa
- 선형 열팽창 계수 (40–800 °C): 3.2–3.5 ×10⁻⁶/°C
- 열전도율 (20 °C): 23–54 W/(m·K)
- 열충격 저항: 550–900 °C
- 체적 저항률 (20 °C): >10¹⁴ Ω·cm
Since 1986, these tubes have been the preferred choice for foundries seeking maximum reliability, lowest maintenance and best price/performance. View Sialon Westofen Dosing Tubes – custom lengths, diameters and mounting options available on request. Standard 12-month warranty against chemical attack.
| 재료 데이터 시트 | Sialon (Si3Al3O3N5) | ||||
대표적인 Sialon ULTRA™ 등급 |
ULTRA-001 | ULTRA-002 | ULTRA-003 | ULTRA-004 | |
| 부피 밀도 | g/cm3 | 3.2 | 3.1 | 3.3 | 3.2 |
| 수분 흡수율 | % | 0 | 0 | 0 | 0 |
| 굽힘 강도 | MPa | 580 | 900 | 1,020 | 790 |
| 비커스 경도 HV1 | GPa | 13.9 | 12.7 | 15.0 | 13.8 |
| 파괴 인성 (SEPB) | MPam1/2 | 4 ~ 5 | 6 ~ 7 | 7 | 6 ~ 7 |
| 영률 (탄성계수) | GPa | 290 | 270 | 300 | 290 |
| 푸아송 비 | – | 0.28 | 0.28 | 0.28 | 0.28 |
| 선형 열팽창 계수 (40 – 800 °C) 팽창 |
×10-6/℃ | 3.2 | 3.4 | 3.3 | 3.5 |
| 열전도율 (20℃) | W/(m·K) | 25 | 23 | 27 | 54 |
| 비열 | J/(g·K) | 0.64 | 0.66 | 0.65 | 0.66 |
| 내 열 충격성 | ℃ | 550 | 800 | 800 | 900 |
| 체적 저항률 (20℃) | Ω·cm | >1014 | >1014 | >1014 | >1014 |


