AISI 9310 Gear Steel Square Bloom from China
Case-hardening 9310 alloy steel square bloom for precision gears, controlled dimensions <4x thickness ratio. Classifies under 7224.90.0045 as other alloy steel semi-finished. Ni-Cr-Mo composition optimized for gear applications.
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
• Gear quality grade certification; Core hardness documentation; Square dimension verification essential