品级/指标

ZRS-A级

ZRS-B级

ZRS-C级

ZRS-D级

ZRS-E级

锆ZrO₂+HfO₂

≥66%

≥65%

≥65%

≥63%

≥60%

铁Fe₂O₃

≤ 0.10%

≤ 0.15%

≤ 0.20%

≤ 0.50%

-

钛TIO₂

≤0.15%

≤0.20%

≤ 0.30%

≤ 0.50%

-