Yttrium-Stabilized Hafnia Powder for Refractories (28% Y2O3) from China
Powder of hafnium oxide stabilized with 28% yttrium oxide equivalent, applied in high-temperature refractories. Classified in HTS 2846.90.40.00 for its yttrium-bearing composition within the specified rare-earth concentration limits.
Duty Rate — China → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Certify hafnia-yttria ratio with wet chemistry analysis; comply with refractory dust handling regs
• Common issue: confusion with pure hafnium compounds under 2825