AISI 52100 Ball-Bearing Steel Round Bar from China
A precision-ground round bar made from AISI 52100 alloy steel, specifically formulated for ball-bearing applications with controlled carbon (0.95-1.13%), chromium (1.25-1.65%), and low sulfur/phosphorus levels as defined in HTS Chapter 72 note (h). This falls under HTS 7228.60.10.30 as other bars and rods of tool steel (not high-speed) of ball-bearing steel. It is hot-rolled or forged into bar form without further working beyond basic surface treatments.
Duty Rate — China → United States
75%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 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
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide mill test certificates confirming ball-bearing steel composition per note (h) including exact C, Cr, Mn, S/P limits; declare as 'tool steel, ball-bearing grade' to avoid reclassification; watch for alloy content exceeding tool steel specs leading to Chapter 72 heading 7228.30