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Digital Showcase: Automotive > Product Overview > Components > Molten Aluminum Processing Parts    Japanese

Molten Aluminum Processing Parts

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Molten Aluminum Processing Parts
Silicon nitride's excellent thermal shock resistance and high-temperature strength enable it to resist erosion when exposed to molten aluminum, making it an ideal material for use in low-pressure casting smelter parts, pipes, molten-metal pumps and related applications.

 Product Outline
Features
· High thermal shock resistance
· Low welting to aluminum
· High mechanical strength at high temperature

Applications
· Stalk
· Heater Protection Tube
· Degassing Pipe
· Fixtures for wetting process

 Product Characteristics
Material Characteristics

Items

Units
KYOCERA

SN240

SN220
Flexural Strength
(3 Point Bending)
MPa 1,020 610
Thermal Conductivity W/(m·K) 26 20
Poisson's Ratio - 0.27 0.28
Young's Modulus GPa 300 290
Coefficient of Linear
+ Expansion
(~800°C)
×10-6/K 3.4 3.2
Heat Shock Resistance K 800 550
Chemical Resistance for Molten Aluminum Good (*) Good (*)
* After being dipped into ADC 12-700°C×1000Hr smelter, then washed by HCL. There is no decrease in volume.

Thermal Expansion Molten Metal
Molten Metal Temp. Erode
Al 800°C Not Erode
Pb 400°C Not Erode
Sn 300°C Not Erode
Zn 500°C Not Erode
Mg 750°C Slightly Eroded
Cu 1,150°C Erode

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