</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Chromite Mullite Composite Refractories from Japan

Composite shapes blending chromite and mullite for glass tank regenerator checkerwork. Under HTS 6815.91.00 primarily for chromite component. High thermal cycling resistance.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Specify chromite >30% for 6815.91 qualification

Glass tank documentation differentiates use

Thermal expansion data supports classification