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Home / Products / SG-28 Silicon Nitride Ceramic Material / SG-28 Silicon Nitride Ceramic Stopper tube (Valve) Supplier
  • SG-28 Silicon Nitride Ceramic Stopper tube (Valve)

SG-28 Silicon Nitride Ceramic Stopper tube (Valve)

SG-28 Silicon Nitride Ceramic Stopper tube (Valve) is the better choice for various types of stopper tubes/valves due to its high density, high-temperature strength, and good thermal shock resistance. Compared with aluminum titanate and alumina ceramics, silicon nitride ceramics have better abrasion resistance, which ensures the better impermeability of the stopper tube/valve for a long time; The high-temperature strength of silicon nitride ceramics ensures that the stopper tube /valve can operate smoothly for a long period under conditions of frequent operation; Non-wetting property reduces slag and pollution of molten aluminum.

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  • SG-28 Silicon Nitride Ceramic Stopper tube (Valve)
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Advantages And Features

Compared with aluminum titanate and alumina ceramics, silicon nitride ceramics have better wear resistance and can ensure the sealing pipe (valve) tightness for a long time;
The high-temperature strength of silicon nitride ceramics is good, which can ensure that the sealing pipe (valve) can still run smoothly for a long time under the condition of frequent operation;
Low wettability with aluminum water, reduced slagging, and will not pollute aluminum water.

Details Parameters

Performance Parameter Si3N4
Density（g/cm3) Density 3.2-3.4
Porosity（%） Porosity <0.5
Vickers hardness Vickers Hardness 15
Fracture toughness(Mpa•m1/2) Fracture Toughness 8.04
Bending strength(Mpa) Bending Strength 791
Young's modulus Young's Modulus 290
Thermal conductivity(W/m•K) Thermal Conductivity 29.9
Coefficient of thermal expansion(10-6K-1） Thermal Expansion Coefficient 3.2
Maximum operating temperature（℃） Max Operation Temperature 1200
Thermal shock resistance Thermal shock resistance Excellent
Non-stick property Non-stick performance Excellent

Precautions For Use

Zhejiang Shangguijuli Special Material Technology Co., Ltd is professional China SG-28 Silicon Nitride Ceramic Stopper tube (Valve) supplier and wholesaler in China, We focus on silicon nitride ceramic material and aluminum titanate material products. We also provide consulting services on ceramic materials for the aluminum processing industry, based on long-term experience, development work and information obtained from customer interactions. Welcome to visit our SG-28 Silicon Nitride Ceramic Stopper tube (Valve) company.

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About Us
Zhejiang Shangguijuli Special Material Technology Co., Ltd.
Zhejiang Shangguijuli Special Material Technology Co., Ltd.
Founded in 2018, Zhejiang Shangguijuli Special Material Technology Co., Ltd.（SGJL for short) is a high-tech SG-28 Silicon Nitride Ceramic Stopper tube (Valve) Supplier and company which specializing in R&D and production of special ceramic materials. After five years of rapid development, SGJL has become a high-end material backbone supplier specializing in serving the global aluminum processing industry. We offer and wholesale SG-28 Silicon Nitride Ceramic Stopper tube (Valve) which mainly serve the global aluminum processing industry.

SGJL’s mission is to provide various high-end material solutions for the global aluminium processing industry and even the non-ferrous metal processing industry. And we will rely on our outstanding technological research and development capabilities to continuously create an advanced material foundation for the upgrading of the entire industry.
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