High-Chrome Alloy Steel Balls for Wafer Grinding Machines
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when supplied as replacement part with wafer grinder
Parts for semiconductor grinding machinery may classify under heading for such equipment.
If not specifically alloy steel composition
Balls of other materials (e.g., ceramic-coated) for bearings fall under residual ball provision.
If in bulk, unfinished form for further processing
Alloy steel balls not precision-finished for bearings treated as other finished steel shapes.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• 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
Related Products under HTS 8482.91.00.10
Alloy Steel Bearing Balls for Semiconductor Wafer Crystal Pullers
Precision-ground alloy steel balls used in the high-speed rotating mechanisms of Czochralski crystal pullers for growing monocrystalline silicon boules in semiconductor manufacturing. These balls ensure minimal friction and precise alignment under extreme thermal conditions. Classified under HTS 8482.91.0010 as balls of alloy steel for ball bearings.
Stainless Alloy Steel Balls for Wafer Slicing Saw Bearings
Corrosion-resistant stainless alloy steel balls for the high-precision bearings in wafer slicing saws that cut monocrystalline semiconductor boules into thin wafers. Designed for ultra-low vibration to maintain cut accuracy within microns. HTS 8482.91.0010 covers these alloy steel bearing balls.
Vacuum-Compatible Alloy Steel Balls for Float Zone Crystal Growers
Specially alloyed steel balls for vacuum-rated bearings in float zone crystal growers producing ultra-pure silicon for power semiconductors. Low outgassing materials prevent contamination during high-temperature zone refining. Classified as alloy steel balls under HTS 8482.91.0010.
Precision 52100 Alloy Steel Balls for Wafer Lapping Machine Spindles
Grade 5 precision 52100 chrome alloy steel balls for the main spindles in wafer lapping equipment that achieve sub-micron flatness on semiconductor wafers prior to device fabrication. Through-hardened for maximum fatigue resistance. HTS 8482.91.0010 for alloy steel bearing balls.