Code

规格

TREM

（ %）

Yb/RE

（ %）

RE Impurities Content (%/TREM)

稀土杂质含量

Non-RE Impurities Content (%/TREM)

非稀土杂质含量

Lu+Er+Tm+Y

Mg

Al

Si

Ca

Fe

Mo

Cl

O

W

4N-Yb

≥ 99.5

≥ 99.99

≤ 0.01

≤ 0.005

≤ 0.01

≤ 0.005

≤ 0.01

≤ 0.005

≤ 0.01

≤ 0.02

≤ 0.05

≤ 0.01

4N-Yb

≥ 98

≥ 99.9

≤ 0.10

≤ 0.005

≤ 0.01

≤ 0.005

≤ 0.01

≤ 0.005

≤ 0.01

≤ 0.03

≤ 0.10

≤ 0.01