Non-Magnetic Copper Roller Balls for Wafer Grinding Machine Spindles from Germany
Copper alloy balls engineered for non-magnetic properties in high-speed spindles of wafer grinders that process crystal boules to precise diameters for semiconductor wafers. HTS 8482.91.0015 applies per statistical note 6 for copper balls in wafer preparation equipment. Critical for maintaining crystal orientation during grinding.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Certify magnetic permeability <1.005 for non-magnetic qualification
• Provide equipment OEM specifications linking balls to wafer grinder models
• Watch for contamination risks—require cleanroom packaging protocols