High-Chrome Alloy Steel Balls for Wafer Grinding Machines from Japan
High-chromium alloy steel balls employed in the spindle bearings of wafer grinders that shape semiconductor crystal boules to exact diameters. These provide corrosion resistance and durability during continuous precision grinding operations. Falls under HTS 8482.91.0010 as alloy steel bearing balls.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Provide grinding equipment OEM specifications confirming ball dimensions and load ratings for customs validation
• Label packages with 'For Semiconductor Wafer Processing Equipment Only' to support correct Chapter 84 classification
• Watch for anti-dumping duties on Chinese-origin high-chrome steel balls; source certificates of origin early