Si3N4 Ceramic Bearing Balls Silicon G5 Nitride Ball Polish 0.8mm - 25.4mm Grade

Model: Silicon Nitride Ceramic Balls Material: Ceramic Grade: G5 Color: Black Diameter: 0.8mm~25.4mm Tolerance: ±0.0003 mm Operating temperature: 1200℃ Breaking Willfulness: 5.0~7.0 Expansion coefficient: 3.3 Hardness: HRC: 70~80 HV: 1400~1700

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