Ceramic Silicon Nitride Outer Ring With V Groove Pulley

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Material Silicon Nitride (Si3N4)
Color Black
Size 5x30x15mm
Accuracy 0.008mm
Maximum Temperature 800℃(1472F)
Circular Runout 12um
Perpendicularity 12um
Circularity 10um
Parallelism 12um
Applications Wire and cable production industry, wire drawing machine. Strong wear resistance, high hardness, long life. Pulled copper wire is smoother
RoHS Compliant
Ingredients Aluninum (Al) 2.0~3.5%
Yttrium (Y) 4.0~5.0%
Titanium (Ti) 1.0~1.5%
Oxygan (O) 4.5~6.0%
Carbon(C) 0.3~0.8%
Other impurities less than 0.1%
The rest is silicon nitride
Density(g/cm3) ≥3.20
Hardness(Hv) 1400~1600
Bending strength(Mpa) >800
Compressive strength(Mpa) >4000
Elastic Modulus(Gpa) 300~315
Fracture toughness(Mpa.m1/2) 6~8
Cofficient of thermal expansion(10-6/℃) 2.2~3.0