Heat-Treated 0.45% Carbon Spring Wire from China
Round wire of nonalloy steel containing 0.45% carbon by weight, heat treated for enhanced tensile strength and elasticity. Used primarily in manufacturing compression and extension springs for automotive suspensions and industrial machinery. Classified under HTS 7217.10.80.10 due to its carbon content between 0.25-0.6%, round shape, and heat treatment without plating or coating.
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 verifying carbon content (0.25-0.6%) and heat treatment process to avoid reclassification
• Declare exact diameter and tensile strength; common pitfall is misstating as cold-drawn without heat treatment
• Check for inadvertent coatings; even light oil may shift to plated categories requiring different documentation