Downloads


Product leaflets (303 kB)

Query regarding a product:















COMPONENTS FOR MOLTEN METAL METERING SYSTEMS

COMPONENTS FOR MOLTEN METAL METERING SYSTEMS

Precise dosing of liquid aluminum is a critical success factor in modern aluminum casting. EKatherm silicon nitride casting nozzles and plugs are extremely wear resistant and ensure uniform casting weights over very long periods. Coating or reworking of the functional surfaces is not necessary, and maintenance work is much lower.

EKatherm silicon nitride components for liquid metal dosing systems are extremely reliable with the best price/performance available on the market.

fileadmin/esk/plain/ekatherm-e.html

Silicon Nitride
Material properties Norm Symbol/Unit EKatherm®
Density DIN EN 623-2 ρ [g/cm3] >3.24
Porosity DIN EN 623-2 P [%] <0.5
Mean grain size [μm] <2
Aspect ratio (L/D) 3-5
Phase composition β-Si3N4, Oxide
Vickers hardness DIN EN 843-4 HV 1 [GPa] 15
Knoop hardness DIN EN 843-4 HK 0.1 [GPa] 15
Young's modulus DIN EN 843-2 E [GPa] 300
Weibull modulus DIN EN 843-5 m 15
Flexural strength, 4-pt bending DIN EN 843-1 σB [MPa] 700
Compressive strength DIN 51104 σD [MPa] >2500
Poisson ratio DIN EN 843-2 ν 0.28
Fracture toughness (SENB) Klc [MPa·m0,5] 7
Coefficient of thermal expansion DIN EN 821-1
25°C - 500°C α [10-6/K] 2.5
500°C - 1000°C α [10-6/K] 3.9
Specific heat at 25°C DIN EN 821-3 cp [J/g K] 0.65
Thermal conductivity at 25°C DIN EN 821-2 λ [W/m K] 27
Thermal stress parameters calculated
R1 = σB·(1-ν) / (α·E) [K] 672
R2 = R1·λ [W/mm] 18
Specific electrical
resistance at 25°C
DIN EN 50359 ρ [Ω cm] >1011