Hybrid Ceramic-Steel Bearing Balls from United States
Hybrid ceramic-steel bearing balls consist of a silicon nitride (Si3N4) core with a steel jacket, designed for mixed-load bearings in float zone equipment used in semiconductor crystal growth. The combination offers high hardness with improved fracture toughness. These are classified as 'other' balls under this tariff item for ball bearings.
Duty Rate — United States → Canada
0%
Import Tips
• Provide material composition certificates to confirm the hybrid construction for classification purposes
• Note that if the balls are wholly of ceramic material, they may be excluded from Chapter 84
• Confirm whether the end-use in semiconductor equipment qualifies for any duty relief programs