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AISI 52100 Ball-Bearing Steel Hot-Rolled Coil from China

Hot-rolled bars and rods in irregularly wound coils made from AISI 52100 alloy steel, specifically formulated for ball-bearing production with precise carbon (0.95-1.13%), chromium (1.25-1.65%), and low sulfur/phosphorus content per US note (h). This falls under HTS 7227.90.20.30 as other tool steel of ball-bearing quality, hot-rolled in coils. Ideal for manufacturing high-precision bearing components requiring superior hardness and fatigue resistance.

Duty Rate — China → United States

35%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter

Import Tips

Provide mill test certificates confirming ball-bearing steel composition per US Note (h) to avoid reclassification

Ensure coils are irregularly wound and hot-rolled; cold-drawn products shift to Chapter 72 headings 7228-7229

Declare exact alloy analysis to prevent disputes over tool steel vs. other alloy steel categories