Cold-Finished Maraging Alloy Steel Round Bar from Japan
C250 maraging steel bar (18% Ni, Co, Mo), cold-finished 30 mm diameter for rocket motor cases. Under HTS 7228.50.5015 as cold-finished alloy steel <76 mm cross-section. Ultra-high strength from precipitation aging of low-carbon martensite.
Duty Rate — Japan → United States
50%
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
9903.05.900%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 aging heat treatment specification in material certs
• Document solution treatment prior to cold-finishing process
• Confirm compliance with ITAR if defense-related end use